抄録
An experimental study is performed for a channel flow with the dielectric barrier discharge plasma actuator (DBD-PA). The actuator is installed in the bottom wall of a channel passage. The channel height H is changed 6mm and 9mm, and the Reynolds number based on hydraulic diameter is varied from 800 to 7000. The wall static pressure is measured in the upper wall of the channel, and the friction factor is evaluated. The velocity profiles are measured by a PIV system at the Reynolds number of 2000, 3000 and 4000. The result shows that the pressure loss decreases by the effect of induced flow with the plasma actuator. The effect is remarkable in the laminar flow region. The friction loss reduction rate obtained at H= 9mm is larger compared with that of H=6mm at the same Reynolds number.
