Numerical Study on Flow Control by Micro-Blowing

Current state and prospects of researches on the control of turbulent boundary layer by air blowing

“…Kornilov / Progress in Aerospace Sciences ∎ (∎∎∎∎) ∎∎∎-∎∎∎ blowing intensity rises [94]. The perforated wall with staggered orifices turned out to be more effective than the similar wall with tandem orifices.…”

“…Note that using a numerical calculation for М 1 ¼ 0.7 and blowing coefficient equal to 0.015, the total drag reduction of about 3.2% was obtained in [94].…”

“…The numerical research of [94] shows that the micro-blowing effect on the flow field is limited by the viscous sublayer, and the effect zone is restricted by a small region enveloping the permeable area. The friction drag reduction can be reached even at the zero blowing.…”

“…As for the integral characteristics of the flow, almost every result of numerical researches reveals that the blowing reduces the friction and increases the turbulence level, whereas the suction increases the friction and reduces the turbulence level [63,74,90,[92][93][94][95], including the conditions of the developing turbulent flow [96].…”

Control of Transonic Shock Wave Oscillation over a Supercritical Airfoil

“…Stanewksy [8] extensively studied various conventional means of flow control in case of moderate to large aspect ratio wings, delta wings. Li et al [9] proposed micro-blowing as another flow control technique. However, these active flow control methods are not always economically viable.…”