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Old   April 4, 2005, 10:59
Default Drag and Lift
Daniel Fisher
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I'm a final year student at the university of Hertfordshire, for my major project I am looking to improve the aerodynamics of a sports 2000 race car to increase downforce and reduce lift. I'm using Phoenics 3.5 and have found some reasonable results, but don't I don't really want to calculate the lift and drag using long intergrals. So does anyone know of, or have a package that my PHI files can be imported to, to calculate lift and drag? I am of the understanding that Phoenics 3.6 can do this, but am having problems getting a copy from the university. Does phoenics reader have the capabilities to do this? Failing all of this, does anyone know the full calculations for this?


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Old   April 7, 2005, 05:38
Default Re: Drag and Lift
Kevin Chow
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Phoenics Reader doesn't have the capability to do this directly - you'd need to dump and pull off values of pressure and do a large excel spreadsheet that looks at the force and area per cell and figure out the force that way. If your simulation is 2D, it shouldn't be too bad; if it's 3D... well, yeah.

Email me or come talk to me, I'm in E108 in the STRI.
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Old   April 8, 2005, 03:51
Default Re: Drag and Lift
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If you can manage to export your data in Plot3D format, I would recommend to have a look at the VTK toolkit or one of its GUI-Shells, e.g. Paraview. This software is very capable and all free. For exporting Plot3D you may have to contact CHAM for a conversion program.

Also, OpenDX, a free visualization software package, could be used for such integration. Some time ago I managed to read my Phoenics results into openDX by using the PEN/NEP tool which comes with Phoenics and the general array importer of openDX. One may also use the Tecplot exporter.


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