[serrar]

To control the recirculation zone at a diverging channel, backward-facing step geometry. I used a synthetic jet where his position is in this stage.
I found in publications that 30 periods were used for the blowing-suction of this jet and that I had also respected this condition. My problem is that in this publication, the synthetic jet takes only 0.1s so that the results converge around a gain of -24% over the distance.
the initial attachment after this gain has remained fixed. Contrary to my situation, I find that the response time of my plane is too long close to 0.3 s and that the gain always increases. I averaged the CF after each period.
Do you have an idea to solve this problem?