Dynamic stall flow control with multistage dielectric-barrier discharge actuation under light stall conditions

This study employs a numerical simulation method that combines the plasma body force model based on electrostatics with Navier–Stokes equations to investigate coupling mechanism of flow fields induced by multistage dielectric-barrier discharge (MDBD) actuation. Compared conventional single-stage alternating-current DBD (AC-DBD) actuation, MDBD actuation provides higher intensity and larger control region, which are advantageous for improving effect Numerical simulations conducted established technology dynamic stall an airfoil. The actuation-induced vortices delay accelerate reattachment under unsteady conditions is analyzed. A comparison AC-DBD validates technical advantages in average aerodynamic force, delaying lift momentum stall, reducing hysteresis effect, suppressing negative damping, accelerating reattachment.