Flow Control with Intermittent Disturbance for the Laminar Separation Bubble on a NACA633-421 AirfoilOACSTPCD
This study investigates the aerodynamic performance of the NACA 633-421 airfoil and the effectiveness and feasibility of intermittent disturbance flow control methods on laminar separation bubbles(LSBs).It is found that the average velocity and influence range of the synthetic jet actuator increase with the increasing of driving frequency and driving amplitude.LSB occurs at Re=1.0×10^(5),and ruptures atα=6°.But with intermittent disturbance control,the stall angle of attack(AoA)increases while significantly reducing drag.Research shows that although certain disturbance cannot fully recover from LSB stall,decreasing driving amplitude partially restores wing aerodynamic performance,more effectively than increasing driving amplitude.
SIPKADUWA MADUWA GURUGE Supun Induwara Perera;LI Linkai;WANG Shilong
College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.ChinaCollege of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.ChinaCollege of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,P.R.China
laminar separation bubbleintermittent disturbance controldriving frequencydriving amplitudesynthetic jet actuator
《Transactions of Nanjing University of Aeronautics and Astronautics》 2024 (S01)
P.1-12,12
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