Pac Car 2 CFD

grabcad

This model is based on a model uploaded to grabcad byТодор ЛазаровNovember 6th, 2018. Alex Yang uploaded later exactly the same file with the same errors.When converted to OBJ format using https://anyconv.com/ there were errors. These are corrected and then cleaned for 3D printing using 3D Tools in Blender, only the left half of it. Converted to FreeCAD shape and converted to solid.The CFD was done using Openfoam from openfoam.org, using CFDoF addon. The full default tolerance was used, stopping by itself at around 500 iterations using 0.001 time step. The tunnel may be a bit small but the result of 0.04 appears reasonable, lower than the measured CD. The lift and side forces are much higher than the drag force.The length of this model is scaled to 2.2 m which is shorter than the actual 2.8 m.