微吹气前体非对称涡控制

doi:10.7527/S1000-6893.2016.0022

Abstract

Abstract:

By measuring force, pressure and particle image velocimetry (PIV) technique, in view of the problem of forebody asymmetric vortex control of slender body at high angle of attack, the test study of the former is carried out by means of continuous active microblowing and double outlet zero mass synthesis of micro jet. The test results show that at different angles of attack, choosing the appropriate flow can eliminate the lateral force to zero; at double outlet of the synthetic jet microblowing control, changings the control voltage can achieve the effect of lateral force proportional control. Field test results show that leeward vortex is a non-symmetric structure when the body has a lateral force, and synthetic jet control has a certain control frequency selection characteristics. Under low frequency control, the vortex swings, and time-averaged result is symmetric distribution; under high frequency control, the position of the left and right vortex is stable and the distribution is symmetrical.

Key words: slender body, microblowing, synthetic jet, forebody vortex control, flow control, control frequency selection characteristics, proportional control

CLC Number:

V211.7

YE Nan, CHENG Keming, GU Yunsong, WANG Qite, CHEN Yonghe. Forebody asymmetric vortex control with microblowing[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016, 37(6): 1763-1770.

References

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Forebody asymmetric vortex control with microblowing

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