The present paper reports the results of an experimental investigation carried out at wind speed of 8 m/sec and 23 m/sec past shallow rectangular cavities with doors and without doors. The angle of doors is choosen to 30˚, 90˚ and 120˚ and depth-to-wide ratio h/w is in the range 0.07∼0.17. Especially, five-hole probe is used to measure three components of velocity in cavities.
The effect of doors and depth on pressure and velocity distribution is investigated by experiment. And the effect of Reynolds number based on height of cavity $Re_h$ on reattachment point is experimentally investigated, too. The results indicate that the cavity depth has more effect on pressure and velocity distribution than angle of doors.