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Experimental study of asymmetric vortex control at high angle of attack with synthetic jet
Received date: 2014-04-03
Revised date: 2014-08-13
Online published: 2015-03-31
Supported by
State Key Laboratory Foundation of Aerodynamics (JBKY14010201)
The research of high angle of attack asymmetric vortex control for slender body has been conducted by using synthetic jet, a frequency up to 1 kHz unsteady small perturbation control devices based on synthetic jet actuator is designed, which has been successfully applied to asymmetric vortex active flow control at high angle of attack. With techniques of balance force and seven holes probe flow field measurements, the characteristics of asymmetric vortex control by the synthetic jet unsteady small perturbation voltage and frequency are explored. The results show that the synthetic jet can completely control the asymmetry vortex, frequency is the key parameter that would affect asymmetric vortex control and high frequency perturbation asymmetric vortex structure tends to be the uncontrolled flow pattern. And it is found that when angle of attack α is 57.5° and unsteady small perturbation frequency fs is 150 Hz, the complete control of the asymmetric vortex can be realized, converting into symmetric vortex pattern.
LI Binbin , JIANG Yubiao , GU Yunsong , CHENG Keming . Experimental study of asymmetric vortex control at high angle of attack with synthetic jet[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(3) : 764 -771 . DOI: 10.7527/S1000-6893.2014.0184
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