On the posibilities of secondary flow control

Kurzfassung

The experimental investigations of the possiblities of a secondary flow control are reported on. The used method concerned the control of a side wall boundary layer by means of so called boundar layer fences. Two types of the fences have been used a streamvise one and a transverse one. Obtained results allowed to contribute to the problem of streamwise vortices formation besides determination of fences effect. Streamwise fence appeares to be very effective in reduction of the secondary flow spanwise extend.