7 Replies Latest reply on Apr 25, 2014 12:56 AM by Jared Conway

    At what speed the air compressibility starts having effect on the car hydrodynamic performance ?

    Boyko Tchavdarov

      Some new sports model cars (exclusing racing cars) can speed above 250 mph? - To improve the hydrodynamics we have to be aware at what speed (Raynolds number based on average/maximum hight of the car) the compresibility cannot be neglected for drag, lift- and down-force. Does anyone have experience in such tyupe of CFD analysis or knows the answer?