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EXPERIMENTAL　AND　NUMERICAL　INVESTIGATIONS　OF　BOTH　FLOW　INDUCED　CAVITY　OSCILLATION　AND　ITS　SUPPRESSION　BY　ACOUSTIC　EXCITATION 被引量：1

EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF BOTH FLOW INDUCED CAVITY OSCILLATION AND ITS SUPPRESSION BY ACOUSTIC EXCITATION
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摘要 Flow induced oscillation in a cavity and its suppression by means of acoustic excitation were studied both experimentally and numerically. In the experiment it was found that with the leading edge pure tone excitation at some frequencies and intensities. the flow-induced oscillation in the cavity could be greatly suppressed. Cavity flows both with and without acoustic excitation were studied by solving the 2-D time-dependent Reynolds averaged Navier Stokes equations using explicit predictor-corrector difference algorithm of MacCormack. Effects of turbulence were simulated via Cebeci-Smith turbulence mode with relaxation modification. The computational and experimental results are compared. and good agreement is obtained. Flow induced oscillation in a cavity and its suppression by means of acoustic excitation were studied both experimentally and numerically. In the experiment it was found that with the leading edge pure tone excitation at some frequencies and intensities. the flow-induced oscillation in the cavity could be greatly suppressed. Cavity flows both with and without acoustic excitation were studied by solving the 2-D time-dependent Reynolds averaged Navier Stokes equations using explicit predictor-corrector difference algorithm of MacCormack. Effects of turbulence were simulated via Cebeci-Smith turbulence mode with relaxation modification. The computational and experimental results are compared. and good agreement is obtained.
作者 Luo Baihua Hu Zhangwei Dai Changhui(Nan jing Universitv of Aeronautics and Astronautics, Nanjing, China, 210016)
出处 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 1996年第3期157-161,共5页 中国航空学报（英文版）
关键词 cavity flow. oscillations acoustic excitation separated flow numerical analysis Simulation cavity flow. oscillations, acoustic excitation, separated flow, numerical analysis, Simulation
分类号 V211 [航空宇航科学与技术—航空宇航推进理论与工程]
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  • 4LI Cheng, LI Xiao-feng, SU Ya-xuan, et al. A new zero- equation turbulence model for micro-scale climate simulation[J]. Building and Environment, 2012, 47(1): 243-255.
  • 5LEE D W, KIM K W. Turbulent lubrication theory using algebraic Reynolds stress model in finite journal bea- rings with cavitation boundary conditions[J]. JSME In- ternational Journal, 1990, 33(2): 200-207.
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  • 7REEVES B L. Two-layer model of turbulent boundary layers[J]. AIAA Journal, 1974, 12(7): 932-939.
  • 8GALBRAITH R, SJOLANDER S, HEAD M R. Mixing length in the wall region of turbulent boundary layers[J] Aeronautical Quarterly, 1977, 28(5): 97-110.
  • 9PATEL V C, HEAD M R. Some observations on skin friction and velocity profiles in fully developed pipe and channel flows[J]. Journal of Fluid Mechanics, 1969, 38(3): 181-201.
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Chinese Journal of Aeronautics
1996年 第3期

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