Numerical Investigation of Flow Separation Control over an NACA0018 Airfoil Using Sweeping Jet Actuator

• DOI: 10.4236/wjet.2023.114066
• Publication Date: 2023-11-29T07:51:42Z
• Authors: Chuanyu Gao; Tong Zhao; Lei Ding; Yalei Bai
• Keywords: Synthetic jet; Decoupling (probability); Flow Control; Oscillation (cell signaling); Feed forward; Lift (data mining); Momentum (technical analysis)

As an active flow control technology and with the advantages of no moving components, Sweeping jet actuator has become a hotspot in field control. However, linear relationship between oscillation frequency momentum coefficient sweeping makes it difficult to determine dominant factors that affect effectiveness. Decoupling coefficient, as well determining mechanism, is focus studying actuator. In this study, novel designed using synthetic jets instead feedback channels applied separation NACA0018 airfoil. This article studies effect under three frequencies F+ = f × c/U∞ 1, 10, 100 coefficients Cμ 0.45%, 0.625%, 0.9%. The numerical results indicate all have good effects on separation, best when maximum lift increasing by approximately 14% compared other two cases. And better ability increases. By decoupling characteristics conducting analysis effect, will promote its engineering application