Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 08, 2021 - November 10, 2021
We present two-dimensional incompressible direct numerical simulation of the suppression of open cavity flow oscillation by using leading-edge microjet blowing. The cavity aspect ratio L/D is 2.0, where D is the cavity depth and L is the cavity length. The width of microjet that is located at just below the cavity leading edge is 0.01D . The velocity of microjet is varied from 0.0 to 1.0 at 0.1 intervals. As increasing microjet velocity from 0.0 to 0.2, the amplitude of selfsustained oscillation decreases. The self-sustained oscillation is completely suppressed when the microjet velocity is from 0.3 to 0.5. The cavity shear layer oscillates again when the microjet velocity is 0.6 or higher.
