tag:blogger.com,1999:blog-6029176038060463262024-03-14T02:02:43.418-07:00Togay YuvançDesign blog of Togay YuvançTogay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.comBlogger30125tag:blogger.com,1999:blog-602917603806046326.post-88610587601151621882019-07-17T09:23:00.002-07:002019-07-17T10:54:17.080-07:002006 to 2014 Galmer Inc. Years<div dir="ltr" style="text-align: left;" trbidi="on">
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-26201789524242705762019-07-15T11:51:00.002-07:002019-07-15T11:51:45.041-07:00MarkII Golf Body Kit<div dir="ltr" style="text-align: left;" trbidi="on">
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Mark 2 VW Golf Body Kit Design for Prototype22. Resurfacing was done on a scanned mesh model for more information check: <a href="https://www.facebook.com/LMP22/" target="_blank">Prototype22</a></div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-77321954011955461012019-06-18T12:57:00.002-07:002019-07-15T12:01:06.990-07:00Spearker Cabinets that I designed and I use at home<div dir="ltr" style="text-align: left;" trbidi="on">
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<tr><td class="tr-caption" style="text-align: center;">Eminence Delta 15-A and Selenium (JBL) ST-200 combination Cabinet+LP shelf (tuned for f3=45 Hz cut off frequency 3kHz 2nd order butterworth filters)<br />
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<tr><td class="tr-caption" style="text-align: center;">2 way system 2nd order butterworth filter design. quiet simple</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Dayton PA130-8, Dayton DCS 165-4 and Tymphany XT25SC90-4 combination tower and bookshelf cabinets book shelf speakers does not have subwoofer drives and cabinets are tuned for f3=75hz and cutoof frequency for the speakers are 5kHz 2nd order butterworth, tower cabinets have subwoofer drives with 120 Hz 2nd order butterworth low pass tuned for f3=38 Hz and fullrange drives are tuned for f3=118 Hz with a 2nd order butterworth bandpass 120Hz-5kHz and trebles have 5kHz highpass 2nd order butterworth cabinets need still development electronic wise but they look okay by the looks </td></tr>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-882743980787297352017-01-10T01:55:00.000-08:002019-04-17T06:10:53.107-07:00P47 1/10 scale 3D print<div dir="ltr" style="text-align: left;" trbidi="on">
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-6911782311815191362016-11-10T05:24:00.000-08:002016-11-10T05:24:36.379-08:00P46 Track Day version Streamlines<div dir="ltr" style="text-align: left;" trbidi="on">
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-22044575012091976572016-09-26T01:31:00.002-07:002016-09-26T01:31:26.871-07:00<div dir="ltr" style="text-align: left;" trbidi="on">
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I have started to experiment 3D printing. First model it has some issues but over all surface finish was good a part from warping on the hard corners. I still have lots to learn about 3D printing.</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-224734453206427712016-08-23T11:43:00.001-07:002016-08-24T10:20:13.763-07:00P04R Streamline Test<div dir="ltr" style="text-align: left;" trbidi="on">
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2004 P04 R Stream lines Test with Ansys CFD. 12 years After I have designed this car I have put CAD model to CFD test to see how well I fared back then. Car generated slightly more drag than any of my rear mid engined designs but has a pretty good lift to drag ratio of -2.95:1. This specific P04 R has 2 different cooling configuration that tested model has radiators placed forward front wheel axis, second configuration has its radiators placed inside the sidepods fed via ducting from front. Wind and ground speed is at 70m/s (252 km/h) and wheels are rotating relative to ground speed, Animation does not have rotating wheels due to analysis was made with steady state condition, all stream lines were captured at the same time interval.<br />
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You can find more information on <a href="http://togayyuvanc.blogspot.com/2015/12/p04-cfd-test-brief-aerodynamic-analysis.html" target="_blank">This blog post</a>.</div>
Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-41063870506003701252016-08-15T22:45:00.001-07:002016-08-15T22:45:55.737-07:002004 P04<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/NmJYjDZiVN4" width="480"></iframe>Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-65474255886765267362016-08-06T22:38:00.001-07:002016-08-06T22:38:00.383-07:00P46, 360 degree animation WIP<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/jo32bfqj9is" width="480"></iframe>Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-89312797100852316622016-03-04T06:08:00.001-08:002016-03-04T06:08:07.184-08:00Some Updated Renderings of P47<div dir="ltr" style="text-align: left;" trbidi="on">
Another car work in progress While P49 chassis is almost complete. P47 is a compact GT Racer for gentleman drivers or younger drivers. Base model generates quite good amount of down-force at a reasonable drag (-2:1 lift to drag ratio CFD tested). I will be uploading more information to <a href="http://togayyuvanc.blogspot.com.tr/p/p47.html" target="_blank">P47 Page</a> on my blog from time to time.<br />
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-11507422643581045992015-12-28T14:30:00.001-08:002015-12-28T14:30:30.419-08:00P49 3rd CFD run: streamline test<iframe allowfullscreen="" frameborder="0" height="270" src="https://www.youtube.com/embed/ysf1pIMS2JU" width="480"></iframe>Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-59919649832925085142015-12-22T19:57:00.002-08:002016-08-24T10:52:46.642-07:002004 P04 CFD tests; A Brief Aerodynamic Analysis of a 12 year old design.<div dir="ltr" style="text-align: left;" trbidi="on">
P04 2004<br />
When I first designed P04, It was around 1998 my senior year in high school. But I actually modeled the car when I started using rhino, some early 2000s. Car had a basic pre-WWII shape giving it a classic look yet it had some modern features on it such as ground effects. Today, I have just made a simplified CFD model of the car in about 2 hours time and have a 150 iteration run in Ansys CFD software. Results are not perfectly accurate to real world but they are close, such as lowest convergence achieved was around 2.8156e-2 (0.028156%).<br />
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<tr><td class="tr-caption" style="text-align: center;">detailed rendering of base model used for CFD test</td></tr>
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<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-w8cx7aVboYU/U85pqd0TfLI/AAAAAAAAAEo/907mP3-ofdE/s1600/P04-17-003.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="200" src="https://3.bp.blogspot.com/-w8cx7aVboYU/U85pqd0TfLI/AAAAAAAAAEo/907mP3-ofdE/s320/P04-17-003.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">detailed rendering of base model used for CFD test</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-iQMo62hiSr0/U85ppyJd4vI/AAAAAAAAAEk/HfBJ0FrfwJQ/s1600/P04-17-002.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="200" src="https://2.bp.blogspot.com/-iQMo62hiSr0/U85ppyJd4vI/AAAAAAAAAEk/HfBJ0FrfwJQ/s320/P04-17-002.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">detailed rendering of base model used for CFD test</td></tr>
</tbody></table>
<br />
<br />
<br />
<br />
Since I am unemployed I thought I go back and evaluate my old designs just to see how well I would have done as a 20 year old me (in this experiment I used a 2004 model of P04 so I was 23year old when I designed it). P04 was
designed to be a medium speed sports car not an high end sports car. I
was heavily inspired from Morgan Aero 8 (1996 version) and Panoz
Esperante GTR-1 while designing it yet it is not completely look a likes
of those two cars.<br />
<br />
CFD model is was a simplified geometry of late 2004 model of P04 which have a relatively low nose and more realistic engine hood. 150 iterations run in Ansys CFD as a steady state mode. to avoid longer calculation time half model is used so results are based on the half model which need to be multiplied with 2.<br />
<br />
Some of the reference values for the test was;<br />
Wind And Ground Speed: 70 m/s (approx. 252kmh)<br />
<br />
Frontal Area of the Car: 0.9274703 m^2 (2*0.9274703=1.8549406 m^2 total frontal area)<br />
<br />
Rest of the parameters were set according to Ansys CFD sheets which can be found in Program website and over the internet (IF you would like to have full set up parameters you may email or message me).<br />
<br />
As a result;<br />
<br />
<b>Drag (Half Model Results) :</b><br />
<b>Forces - Direction Vector (0 1 0)</b><br />
<b> Forces (n) Coefficients </b> <br />
<b>Zone</b> <b>Total Total </b> <br />
<b>bodywork</b> 740.54741 0.26604117 <br />
<b>undertray</b> 77.840038 0.027963983 <br />
<b>wall-solid</b> 253.42488 0.091042722 <br />
------------------------- --------------- --------------- <br />
<b>Net </b> 1071.8123 0.38504788<br />
<br />
<br />
<br />
Total Drag Generated (complete model) :2143.6246 N (~218.59 kg-f or 481.91 lb-f) at 252 kmh.<br />
Y direction is the direction of drag which is a long the length of the car.<br />
<br />
<br />
<br />
<br />
<br />
<br />
<b>Lift </b><b><b>(Half Model Results)</b> :</b><br />
<b> Forces - Direction Vector (0 0 1)<br /> Forces (n) Coefficients </b> <br />
<b>Zone Total Total </b><br />
<b>bodywork</b> 2191.7282 0.78737692 <br />
<b>undertray</b> -2875.6599 -1.0330789 <br />
<b>wall-solid</b> -40.74762 -0.014638556 <br />
------------------------- --------------- --------------- <br />
<b>Net</b> -724.67929 -0.26034056<br />
<br />
<br />
<br />
Total Lift generated (complete model): -1449.35858 N (~ -147.8 kg-f or -325.8lb-f) at 252 kmh. Z direction is the direction of lift.<br />
<br />
Calculated lift to drag ratio: -0.676:1<br />
<br />
<br />
Moment of lift is rear wards. moment center of the model is; Moment Center according to coordinates axis of X,Y,Z (0, 2.15, 0.36) Moment Axis (1, 0, 0). which is the point that intersects at center of the wheelbase along Z axis and Z height of component of the volume centroid.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-kqJuoyiwreU/VnoXtor1-vI/AAAAAAAAA7k/-MzIrM7YooU/s1600/001.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="150" src="https://2.bp.blogspot.com/-kqJuoyiwreU/VnoXtor1-vI/AAAAAAAAA7k/-MzIrM7YooU/s320/001.jpg" width="320" /> </a></td><td style="text-align: center;"></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Above image shows the moment center of the car graphically</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
</tbody></table>
<br />
<br />
Total moment of lift is equal to 1950.7951 N-m which is in positive direction. In other word rear of the car generates more down force than the front of the car. Direction of the moment is actually determined by the under tray of the car which plays a big role in downforce generation. Aerodynamic balance of the bodywork is actually forward biased.<br />
<br />
From these findings we can say that car generates quite a bit drag probably a little higher than now a days sports cars but it generates quite good amount of downforce especially at the rear of the car.<br />
<br />
<br />
And Finally some Images from the CFD test:<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://4.bp.blogspot.com/-A8dxsa52Vhg/VnoZpgAgFkI/AAAAAAAAA7w/CrkzJcidY4k/s1600/001.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://4.bp.blogspot.com/-A8dxsa52Vhg/VnoZpgAgFkI/AAAAAAAAA7w/CrkzJcidY4k/s320/001.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Pressure gradients of the bodywork (-1000Pa to 1000Pa) and streamlines along the floor.</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-6bwWkyZB9MM/VnoZqYVboFI/AAAAAAAAA74/xSW_EMk-pr0/s1600/003.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://1.bp.blogspot.com/-6bwWkyZB9MM/VnoZqYVboFI/AAAAAAAAA74/xSW_EMk-pr0/s320/003.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Streamlines along the floor</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-HduWiGnweXg/VnoZqGtxExI/AAAAAAAAA70/vXGE67FHFwA/s1600/007.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://3.bp.blogspot.com/-HduWiGnweXg/VnoZqGtxExI/AAAAAAAAA70/vXGE67FHFwA/s320/007.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Pressure gradients on the bodywork</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://4.bp.blogspot.com/-50nzFVuI1H8/VnoZqsUW6ZI/AAAAAAAAA78/4Jf_WA0jhW0/s1600/021.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://4.bp.blogspot.com/-50nzFVuI1H8/VnoZqsUW6ZI/AAAAAAAAA78/4Jf_WA0jhW0/s320/021.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Pressure zone around the car</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-6AOn__TqvlU/VnoZq8SRWfI/AAAAAAAAA8E/DTLrzMfUpiU/s1600/023.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://1.bp.blogspot.com/-6AOn__TqvlU/VnoZq8SRWfI/AAAAAAAAA8E/DTLrzMfUpiU/s320/023.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Vortex regions</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-tBdu9BtGx-g/VnoZrMRJWjI/AAAAAAAAA8M/QW6YepHdKRI/s1600/024.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://2.bp.blogspot.com/-tBdu9BtGx-g/VnoZrMRJWjI/AAAAAAAAA8M/QW6YepHdKRI/s320/024.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Vortex regions</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-rzcVi0Pp2tI/VnoZrtMhVSI/AAAAAAAAA8Y/gyJAZydy8F0/s1600/027.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://2.bp.blogspot.com/-rzcVi0Pp2tI/VnoZrtMhVSI/AAAAAAAAA8Y/gyJAZydy8F0/s320/027.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Stream lines along the floor</td></tr>
</tbody></table>
<br />
P04 R 2004<br />
<br />
Racing version of P04 was designed several months earlier than then the road going version (end of 2003). I must say I do have an obsession with racing cars that looks like road cars. P04 road version was designed based on the racing version with slightly less frontal area. Road version was narrower obviously and had slightly higher cockpit height. Racing version had two different cooling configurations yet one was made for rendering and the other was for the analysis. I never had an access to a analysis program back then. So all my designs were experimental until Galmer GT (my first ever design tested with a CFD program).<br />
<br />
<b>1. configuration:</b> <u>Side Mounted Radiators;</u> As I have mention car was very much inspired from Panoz GTR-1 for its layout so I made a version with side mounted radiators, where radiators were mounted inside the side pods behind the front wheel. two ducts were feeding those radiators and exhausting from side. Front splitter opening were supplying cool air to the engine bay exhausting partially from forward of wind shield and side pod openings to the rear wheel that's why rear wheel arches are kind of oversized. There also was an opening that supplies air to the radiators front the front splitter opening. I don't know how functional it is but I will be testing it when I have an access to an CFD program.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://2.bp.blogspot.com/-QIEt1-YnFqI/U854eobxQDI/AAAAAAAAAFY/xEgN61Kw7ZYcKVYPSdCxSUg3zyrnM8BaQCPcB/s1600/gtp_009.bmp" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="171" src="https://2.bp.blogspot.com/-QIEt1-YnFqI/U854eobxQDI/AAAAAAAAAFY/xEgN61Kw7ZYcKVYPSdCxSUg3zyrnM8BaQCPcB/s320/gtp_009.bmp" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Side mounted radiators configuration</td></tr>
</tbody></table>
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="http://3.bp.blogspot.com/-Svo_Vx4tHy0/VnoZsAtQ5AI/AAAAAAAAA8g/5Xqey5iGi2M/s1600/028.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><br /></a></div>
<b>2. configuration:</b> <u>Front Mounted Radiators;</u> Front bonnet is slightly higher on this version and front wheel poontoons are more of a tear drop shape from top view. This configuration is also very much similar with the road version.<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://2.bp.blogspot.com/-nVJelbSuK04/V726Yr0_BGI/AAAAAAAABIw/a6jOGB2kQP4sXsozJ2A29JGVyMVtTpeWQCLcB/s1600/Assem1.JPG" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="207" src="https://2.bp.blogspot.com/-nVJelbSuK04/V726Yr0_BGI/AAAAAAAABIw/a6jOGB2kQP4sXsozJ2A29JGVyMVtTpeWQCLcB/s320/Assem1.JPG" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Front mounted radiators configuration</td></tr>
</tbody></table>
<br />
<br />
Differences between race version and the road versions;<br />
<br />
Front overhang is 50 mm shorter on the racing versions.<br />
Tail angle (Average) is 4 degrees more on the racing versions.<br />
Tail width is slightly less on the racing versions.<br />
Cockpits are 30 mm lower on the racing versions.<br />
Racing versions are 50 mm wider than the road version<br />
Side pods are significantly higher on the racing versions<br />
A pillar start points are more forward on the racing versions.<br />
<br />
As for the CFD Test I have run 500 iteration steady state test with same conditions that I have run on the road version. Model detail is more on the racing version so I was expecting a higher drag due to fully functioning radiator inlets and more detailed wheels.<br />
<br />
<b>Results for the racing version:</b><br />
<b><br /></b>
Test was also carried on at 70 m/s and Frontal area of the racing version is 1.94 m^2 excluding mirrors. Same configuration was applied for the solution such as moving ground and rotating wheels. and half model was considered for the calculation.<br />
<br />
<u>Regions of the model:</u><br />
<u><br /></u>
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://3.bp.blogspot.com/-1az4pCXb5mk/V728ihgkTXI/AAAAAAAABI8/AQl-gF0rWAYXzSWXjEriBk4vYn1koNOLgCLcB/s1600/FFF06.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="183" src="https://3.bp.blogspot.com/-1az4pCXb5mk/V728ihgkTXI/AAAAAAAABI8/AQl-gF0rWAYXzSWXjEriBk4vYn1koNOLgCLcB/s320/FFF06.png" width="320" /></a></div>
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://3.bp.blogspot.com/-KMCoiLqfZk4/V728w6EdhsI/AAAAAAAABJA/hgBG0zm4B1kW9HEFQwHzrZqHZgUSr3VlgCLcB/s1600/FFF07.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="183" src="https://3.bp.blogspot.com/-KMCoiLqfZk4/V728w6EdhsI/AAAAAAAABJA/hgBG0zm4B1kW9HEFQwHzrZqHZgUSr3VlgCLcB/s320/FFF07.png" width="320" /></a></div>
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<div class="separator" style="clear: both; text-align: left;">
Yellow: Bodywork</div>
<div class="separator" style="clear: both; text-align: left;">
Green: Rear win assy.</div>
<div class="separator" style="clear: both; text-align: left;">
Blue: Flat under tray</div>
<div class="separator" style="clear: both; text-align: left;">
Purple: Front splitter (diffuser)</div>
<div class="separator" style="clear: both; text-align: left;">
Red: Read diffuser</div>
<div class="separator" style="clear: both; text-align: left;">
White: Solid wall boundaries and misc.</div>
<div class="separator" style="clear: both; text-align: left;">
Dark Gray: Wheels (calculated separately)</div>
<u><br /></u>
<br />
<b>Drag (Half Model Results) :</b><br />
<b><br /></b>
<b>Forces - Direction Vector (0 1 0)</b><br />
<b> Forces (n) Coefficients</b> <br />
<b>Zone Total Total </b> <br />
<b>body_work</b> 616.21496 0.21223392 <br />
<b>front_diffuser</b> 30.942650 0.010657125 <br />
<b>front_wheels</b> 107.03279 0.036863739 <br />
<b>rear_diffuser</b> 151.49492 0.052177181 <br />
<b>rear_wheels</b> 110.02186 0.037893223 <br />
<b>rear_wing</b> 82.972048 0.02857685 <br />
<b>undertray</b> 18.214005 0.0062731838 <br />
<b>wall-solid</b> 250.88716 0.088219749 <br />
------------------------- --------------- ---------------<br />
<br />
Net 1373.0367 0.47289497 <br />
<br />
Total Drag Generated (complete model) :2746.0734 N (~280.022 kg-f or 617.342 lb-f) at 252 km/h.<br />
Y direction is the direction of drag which is a long the length of the car.<br />
<br />
<br />
<div>
<b>Lift </b><b><b>(Half Model Results)</b> :</b></div>
<div>
<br /></div>
<div>
<div>
<b>Forces - Direction Vector (0 0 1)</b></div>
<div>
<b> Forces (n) Coefficients </b></div>
<div>
<b>Zone Total Total </b></div>
<div>
<b>body_work</b> 2457.7375 0.84648261 </div>
<div>
<b>front_diffuser</b> -1559.5129 -0.53712024 </div>
<div>
<b>front_wheels</b> 105.76402 0.036426757 </div>
<div>
<b>rear_diffuser</b> -505.90182 -0.17424037 </div>
<div>
<b>rear_wheels</b> 82.35793 0.028365339 </div>
<div>
<b>rear_wing</b> -1712.1224 -0.5896813 </div>
<div>
<b>undertray</b> -2336.1731 -0.80461397 </div>
<div>
<b>wall-solid</b> -599.22192 -0.20638125 </div>
<div>
------------------------- --------------- --------------- --------------- --------------- --------------- ---------------</div>
<div>
Net -4067.0727 -1.4007624 </div>
<div>
<br /></div>
</div>
<br />
<br />
Total Lift generated (complete model): -8134.1454 N (~ -829.452 kg-f or -1828.63 lb-f) at 252 kmh. Z direction is the direction of lift.<br />
<br />
Calculated lift to Drag ratio: -2.9621:1<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://2.bp.blogspot.com/-M0nvAgQyqVc/V73NRRErL3I/AAAAAAAABJs/EiT7T7JKTt0WNbHrkNJP2cN9c6aMTzTmwCLcB/s1600/08.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://2.bp.blogspot.com/-M0nvAgQyqVc/V73NRRErL3I/AAAAAAAABJs/EiT7T7JKTt0WNbHrkNJP2cN9c6aMTzTmwCLcB/s320/08.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Pressure Contours</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://3.bp.blogspot.com/-A1cBXc5wJnc/V73NRQxpURI/AAAAAAAABJo/RtGKWItg0JIBb_ZCqua9vte58bq8dJvNgCLcB/s1600/09.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://3.bp.blogspot.com/-A1cBXc5wJnc/V73NRQxpURI/AAAAAAAABJo/RtGKWItg0JIBb_ZCqua9vte58bq8dJvNgCLcB/s320/09.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><span style="font-size: 12.8px;">Pressure Contours</span></td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://2.bp.blogspot.com/-pLKXqQ2raYE/V73PEwlv5RI/AAAAAAAABJ4/kk2J8K1WpYYCKInsbj7GBPeExApeO4F9wCLcB/s1600/01.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://2.bp.blogspot.com/-pLKXqQ2raYE/V73PEwlv5RI/AAAAAAAABJ4/kk2J8K1WpYYCKInsbj7GBPeExApeO4F9wCLcB/s320/01.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Stream lines</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://4.bp.blogspot.com/-4kCXN9IHork/V73PE2_Gm6I/AAAAAAAABJ8/uPTIya-1Aj0YLRfclUDngw4EbNtHXYRcQCLcB/s1600/02.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://4.bp.blogspot.com/-4kCXN9IHork/V73PE2_Gm6I/AAAAAAAABJ8/uPTIya-1Aj0YLRfclUDngw4EbNtHXYRcQCLcB/s320/02.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Stream lines</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="https://4.bp.blogspot.com/-0eYBui5pqZM/V73PFOC0v5I/AAAAAAAABKA/vf9ySimJLJsosK4Je7_bDzZP4CAIyjXSQCLcB/s1600/04.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="183" src="https://4.bp.blogspot.com/-0eYBui5pqZM/V73PFOC0v5I/AAAAAAAABKA/vf9ySimJLJsosK4Je7_bDzZP4CAIyjXSQCLcB/s320/04.png" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Stream lines</td></tr>
</tbody></table>
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Honestly I wasn't expecting this much of a lift to drag ratio from this car. there are few faulty areas that needs to be fixed though. car generates high drag which can be reduced and at the end of the front diffuser where it joins with main floor there are pressure zones that possibly create lift and front diffuser looses its efficiency because of that. I think P04 would have been an interesting looking race car, rather than looking modern sports car it looks like 1930s cars after all and it has pretty good lift to drag ratio.<br />
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© 2016 Togay Yuvanç</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0Izmir, İzmir, Turkey38.4207803065881 27.14378356933593838.3959008065881 27.103443069335938 38.4456598065881 27.184124069335937tag:blogger.com,1999:blog-602917603806046326.post-63102977558760233692015-12-05T10:33:00.003-08:002019-07-24T17:30:29.825-07:00P49 CFD results (4 runs)<div dir="ltr" style="text-align: left;" trbidi="on">
<span id="goog_2040722286"></span><span id="goog_2040722287"></span>I have made total of 4 CFD runs as I have find time to use Ansys
License, Lift and Drag values at 252 km/h (70 m/s) are in order (Units
are in kgf):<br />
<br />
1. Run ( early model no inlets condition)<br />
Overall Drag: 186.230 kg-f<br />
Overall Lift: -323.158 kg-f<br />
<div class="text_exposed_show">
<br />
2. Run ( early model inlets are open)<br />
Overall Drag: 177.916 kg-f<br />
Overall Lift: -213.253 kg-f<br />
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3. Run ( slightly modified model inlets open)<br />
Overall Drag: 231.436 kg-f<br />
Overall Lift: -374.083 kg-f<br />
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4. Run ( model hasn't changed but aerodynamic components were adjusted
such as wing height, turning vane angles, and rear diffuser plates...
etc)<br />
Overall Drag: 228.747 kg-f<br />
Overall Lift: -407.618 kg-f<br />
<br />
As a result with some aerodynamic adjustments on the car drag reduction
is possible with some downforce gain. There will be 2 more runs for 2
different models in the future. mos of the downforce on the car is
generated by the rear diffuser and front diffuser secondary to the rear
diffuser. Some of the parts needs to be optimized such as front diffuser that supplies too much airflow into the body that some of the air spills from front wheel arches which kind of my problem for the time being rest of the car works fine with some excessive drag that i am trying to reduce without loosing too much of the downforce. Downforce levels of the car is quite high relative to its drag, yet still needs to be optimized.<br />
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P.S. I must admit this is not a detailed report on aero data of the car But I would like to keep detailed data to myself for the time being.<br />
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-36985078925036318342015-08-07T03:54:00.003-07:002015-08-07T03:54:38.712-07:00Some rendering work for a friend<div dir="ltr" style="text-align: left;" trbidi="on">
A small rendering projects for a friend of mine's hotel. That he was face lifting his hotel in Mutrah, Sultanate of Oman. Place called Mutrah Hotel which is the oldest hotel in Sultanate of Oman. Face lift project was only phase of the many that will be continued on the future. Rework of the hotel has been done around the lobby and restaurant exteriors.<br />
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<tr><td class="tr-caption" style="text-align: center;">WIP Render evening</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">19:00 15th June evening time in Muscat</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">11:00 15th June morning time in Muscat (filtered)</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">10:00 15th June morning time in Muscat</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">18:40 15th June evening time in Muscat</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">10:00 15th June morning time in Muscat (higher iso number)</td></tr>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-80867621332130315862015-06-01T08:42:00.002-07:002015-08-05T06:34:10.481-07:00P49 Main Frame FEA Update and Rear Frame Preliminary Data<div dir="ltr" style="text-align: left;" trbidi="on">
<b> Main Frame Update:</b><br />
<br />
Comparison of old and updated chassis (deflection wise) under 30000 Nm
(22126.86 lbf*ft) torsional load (below). Previous deflection value in degree
was 1.08 degrees, now it is 0.861 degree and there is no weight gain on
the chassis a part from modification of the beams and some additional
mini gussets on some weld points. Current calculated torsional stiffness
is ~34480 Nm/degree, previous value was 27540Nm/degree (~20% stiffer
chassis). Stress concentration on chassis beams and welds are also less.<br />
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<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-YnRfik4UAL4/VWauDG6pSAI/AAAAAAAAAvQ/T3IQhdT2vHk/s1600/y_displacement.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="213" src="http://2.bp.blogspot.com/-YnRfik4UAL4/VWauDG6pSAI/AAAAAAAAAvQ/T3IQhdT2vHk/s400/y_displacement.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Updated chassis from March 2015 (tested in May 2015)</td></tr>
</tbody></table>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-SYcMTU4QB5A/VWat9uDhjQI/AAAAAAAAAvI/aUdOK_1V3Qo/s1600/30KN%2BDISPLACEMENT%2BY%2BDIRECTION.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="213" src="http://2.bp.blogspot.com/-SYcMTU4QB5A/VWat9uDhjQI/AAAAAAAAAvI/aUdOK_1V3Qo/s400/30KN%2BDISPLACEMENT%2BY%2BDIRECTION.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Chassis from late 2014</td></tr>
</tbody></table>
<br />
<b> Rear Frame 1st FEA Test Obtained Data:</b><br />
<br />
Another FEA study for the rear frame which was done in Autodesk
Inventor, Rear Frame is quite similar to Galmer GT rear frame (due to
same power and gear train) with some differences and this one is
symmetric. Torque range varies from 15000Nm to 80000Nm and torsional
stiffness 79225.5221 Nm/degree which is mathematically achievable but
failure occurs on some beams (eg. gearbox frame diagonal brace) beyond
50000Nm Torsional load. yet model is not perfect there are some residua<span class="text_exposed_show">l
stresses due to CAD design of the beam which the don't contact
perfectly. calculation was done with 847676 elements (1635684 nodes).
Detail of beams increases close to where torsional load was applied.
Calculation to about 27 hours on incremental loads and computer crashed 5
times. otherwise calculation would have been less. Material used: 4130
Chrome-Molybdenum alloy steel which has a yield point at 460 MPa.</span><br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://1.bp.blogspot.com/-vCP01dkKDcY/VWavLxvXh9I/AAAAAAAAAvY/NpzI36-boaE/s1600/FOS_001.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="212" src="http://1.bp.blogspot.com/-vCP01dkKDcY/VWavLxvXh9I/AAAAAAAAAvY/NpzI36-boaE/s400/FOS_001.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Safety factor map</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-joU-3MlM3aI/VWavMgESRQI/AAAAAAAAAvc/qGuJ8WJmEAQ/s1600/FOS_002.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="213" src="http://3.bp.blogspot.com/-joU-3MlM3aI/VWavMgESRQI/AAAAAAAAAvc/qGuJ8WJmEAQ/s400/FOS_002.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Safety factor map</td></tr>
</tbody></table>
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-xdHgCZFA4mE/VWavXcQnJQI/AAAAAAAAAv4/OAbQmBu4MRo/s1600/vm_stress_001.bmp" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="213" src="http://2.bp.blogspot.com/-xdHgCZFA4mE/VWavXcQnJQI/AAAAAAAAAv4/OAbQmBu4MRo/s400/vm_stress_001.bmp" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Von Mises stresses</td></tr>
</tbody></table>
<br />
<br />
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-iSrf6FCCg40/VWavRkeXmmI/AAAAAAAAAvw/h2zkVFcTtH0/s1600/vm_stress_002.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="212" src="http://2.bp.blogspot.com/-iSrf6FCCg40/VWavRkeXmmI/AAAAAAAAAvw/h2zkVFcTtH0/s400/vm_stress_002.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Von Mises stresses</td></tr>
</tbody></table>
<table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://4.bp.blogspot.com/-KHL-ZKDgffs/VWawKD9yUuI/AAAAAAAAAwI/HH6QO7aBTnI/s1600/30KNm_resultant_disp.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="213" src="http://4.bp.blogspot.com/-KHL-ZKDgffs/VWawKD9yUuI/AAAAAAAAAwI/HH6QO7aBTnI/s400/30KNm_resultant_disp.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Resultant displacement</td></tr>
</tbody></table>
<span class="text_exposed_show"> <table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto; text-align: center;"><tbody>
<tr><td style="text-align: center;"><a href="http://2.bp.blogspot.com/-O2J56F-3ops/VWav-GQxUAI/AAAAAAAAAwA/Hl4z4VdSnRs/s1600/30KNm_y_disp.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" height="213" src="http://2.bp.blogspot.com/-O2J56F-3ops/VWav-GQxUAI/AAAAAAAAAwA/Hl4z4VdSnRs/s400/30KNm_y_disp.png" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Displacement in Y direction</td><td class="tr-caption" style="text-align: center;"><br /></td><td class="tr-caption" style="text-align: center;"><br /></td></tr>
</tbody></table>
</span></div>
Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-46476541177135056112015-03-24T06:59:00.002-07:002015-08-05T06:34:19.694-07:00P49 Chassis as 3-22-2015<div dir="ltr" style="text-align: left;" trbidi="on">
Chassis for FEA is almost complete as of 3-22-2015. Remaining job for the my thesis are FEA test of the complete chassis and CFD test of the preliminary bodywork. I have been trying to find a license for a CFD program I wasn't able to but then suddenly I have found SimScale (<a href="https://simscale.com/_en/">https://simscale.com/_en/</a>), a cloud based analysis program which offers 1000 hours/year educational license, perfect for my thesis project since I have been living on fumes of my past savings.<br />
<br />
My Target, till May 2015, is to finish the FEA test of the Complete chassis and at least complete 2 CFD test for bodywork in order to finish my thesis project then I can concentrate on the car more after I graduate from the university. Yet there are lots of things to do such as suspensions, uprights, rear trans-axle (which is probably going to be attached to <a href="http://www.galmerinc.com/" target="_blank">Galmer</a> designed rear hub). So far I have been progressing really slow due to real life conditions, going back to study from work life definitely drains my economy and couple when you made couple bad deals and don't get paid, you end up wasting time (in this case 2 months) and money.<br />
<br />
Additional notes on chassis: weight so far is 112.3 kg, survival cell torsional rigidity is 27540 N-m/degree (earlier version had 25430N-m/degree), roll cage compiles with FIA safety standards and maximum deflection is not more than 9 mm on roll cage test according to FIA Appendix J to the International Sporting Code - Article 253 Safety Equipment 2015, FIA Appendix K to the International Sporting Code 2015. Soon I will be releasing more data on the car April will be a really busy month for me with exams and a mandatory medical examination which is basically 15 days of wasted time.<br />
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-61130048207978847992015-03-20T09:27:00.002-07:002015-03-20T09:27:33.953-07:00P49 more renderings<div dir="ltr" style="text-align: left;" trbidi="on">
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Final batch of P49 renderings of the early preliminary bodywork.</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-61912369361414519612014-12-14T01:37:00.003-08:002014-12-14T01:37:27.477-08:00P49 Version 1; Preview Renderings<div dir="ltr" style="text-align: left;" trbidi="on">
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<span style="color: black;">Some Preview Renderings of P49 Version 1</span></div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-2150618790161414382014-11-13T04:46:00.001-08:002014-11-13T04:46:58.273-08:00P49 Preliminary design tchnical sketches<div dir="ltr" style="text-align: left;" trbidi="on">
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-6099118949060231882014-11-11T06:38:00.002-08:002014-11-11T06:38:28.086-08:00P49 Technical Sketch<div dir="ltr" style="text-align: left;" trbidi="on">
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<tr><td class="tr-caption" style="text-align: center;">First version of P49 and will appear on my thesis project as it is.</td></tr>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-81192627400656595302014-11-10T22:38:00.002-08:002014-11-10T22:38:48.865-08:00P49 Preliminary Renderings<div dir="ltr" style="text-align: left;" trbidi="on">
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It is still a work in progress but I am close to complete the general design of the car. Next comes the chassis completion probably in next 2 months time. I will be running some CFD test on the bodywork I have so far 3 different models and 4 different rear wings to try.</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-89937522273622684412014-11-01T10:47:00.001-07:002015-08-05T06:34:30.176-07:00P49 Chassis Torsional Stiffness Test<div dir="ltr" style="text-align: left;" trbidi="on">
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Program: Autodesk Inventor (Shared Licence)</div>
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torsional stiffness= 27540Nm/degree</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-53048247901503390242014-09-28T07:24:00.000-07:002014-09-28T07:24:10.813-07:00Galmer G14 CFD test results<div dir="ltr" style="text-align: left;" trbidi="on">
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<tr><td style="text-align: center;"><a href="http://4.bp.blogspot.com/-6sGXzuBgv8M/VCgZKcSGuQI/AAAAAAAAAUg/pxQV0U3MjFE/s1600/Galmer%2BZeb%2B1.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://4.bp.blogspot.com/-6sGXzuBgv8M/VCgZKcSGuQI/AAAAAAAAAUg/pxQV0U3MjFE/s1600/Galmer%2BZeb%2B1.png" height="240" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td style="text-align: center;"><a href="http://4.bp.blogspot.com/-QE7VkKNswmI/VCgZMA-gQMI/AAAAAAAAAVA/MYGQr-X-Fmo/s1600/Galmer%2BZeb%2B2.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://4.bp.blogspot.com/-QE7VkKNswmI/VCgZMA-gQMI/AAAAAAAAAVA/MYGQr-X-Fmo/s1600/Galmer%2BZeb%2B2.png" height="240" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td style="text-align: center;"><a href="http://3.bp.blogspot.com/-y-p_QLuiJxc/VCgZNUZtwAI/AAAAAAAAAVM/2NtL4-mjSI4/s1600/Galmer%2BZeb%2B4.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="http://3.bp.blogspot.com/-y-p_QLuiJxc/VCgZNUZtwAI/AAAAAAAAAVM/2NtL4-mjSI4/s1600/Galmer%2BZeb%2B4.png" height="240" width="320" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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<tr><td class="tr-caption" style="text-align: center;">Image is courtesy of Zebulon Motorsport Consulting CFD model designed by Togay Yuvanç</td></tr>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-39828286657275030462014-09-21T10:08:00.004-07:002015-08-05T06:34:45.031-07:00P49 Chassis stress tests<div dir="ltr" style="text-align: left;" trbidi="on">
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P49 front and roll hoop stress tests</div>
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Preliminary chassis stress tests, 29545 N of resultant force applied during the test to observe possible failure point. Load applied was excessive to fail the material. on in front impact conditions one of the support beams failed which is good i assume. These are only preliminary test that were done couple months back. I will publish more detailed tests in the future with more complete chassis. Survival cell is build from 4130 steel and weighs under 84 kg. in the test some of the support beams were hidden just to make the test faster to get results.</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0tag:blogger.com,1999:blog-602917603806046326.post-60083051386923135822014-09-09T12:29:00.003-07:002014-09-09T12:29:39.685-07:00<div dir="ltr" style="text-align: left;" trbidi="on">
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P47 track day car animation... nothing to fancy preview render just to
avoid 14 days of rendering, done in 6 hours of preview rendering</div>
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Togay Yuvançhttp://www.blogger.com/profile/05164881994181775852noreply@blogger.com0