Quote:
Originally Posted by JulianEdgar
No one has mentioned OpenFOAM?
I know nothing about CFD (except that I see a huge amount of amateur stuff on the web that is obviously quite wrong eg in calculated Cd figures) but I know of an aerodynamicist using a professional(?) version of OpenFOAM.
Maybe I'm just dumb, but no one has quite explained how you develop the shape of your car to model in CFD - 3D scanning?
OpenFoam is here. |
Usually you can buy a 3d model of your car, or find it for free on the various repositories.
Another way is to take a measurement to your car from a plane, say a garage ceiling, take a measurement every 5-10cm along the centreline, do the same thing 5cm to the left, and then again until the whole left side is complete. You then have multiple 2D slices of your car that you interpolate between to get the correct shape. Do it every few cm if the detail is more complex.
CFD doesn't need huge supercomputers contrary to what aerohead believes, I know people who run open-foam on middle range laptops. Open-foam is free. If anyone is using price or processing power as an excuse for not doing CFD then they are ignorant to the many ways of doing it.