An experimental facility and instrumentation for low Reynolds number flows have been developed.

Flow visualization results and measurements of velocity components inside and above asymmetric cavities using an LD A system axe presented. A recirculation region is present even at small Reynolds numbers. The size of the vortex and the distance between its center and the vertical wall of the cavity increases when increasing the Reynolds number. Increasing the angle of attack at low Reynolds number causes a slight increase of the recirculation vortex size.

The variation of the pressure coefficient, determined by pitot-static tubes for the low range of Reynolds numbers is investigated. The results agree reasonably well with theoretically determined values for cylinders.

The disturbance of the flow by the pitot tube presence is also investigated by measuring the velocity profiles around the pitot tube