Abstract:

The classification of automotive testing wind tunnels and the general situation of some typical testing wind tunnels oversea exclusively for motor vehicles are presented. Some problems in modifying an aeronautical wind tunnel for automobile testing are analysed and discussed. Then a case of modifying the FD 09 aeronautical wind tunnel for automobile testing, as well as its application after modyification, is described. After building the ground plate and boundary layer suction equipment, the authors measured the aerodynamic characters of car and truck models in this wind tunnel and compared the testing results with the test of Tianjing minibus performed in MIRA wind tunnel in England. The rebuilt plan for FD 09 wind tunnel proved very successful and it is worth popularization.

Key words: automobile model, automobile w ind tunnel, w ind tunnel test ing, ground simulat ion