| EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF BOTH FLOW INDUCED CAVITY OSCILLATION AND ITS SUPPRESSION BY ACOUSTIC EXCITATION |
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| 作者姓名： | Luo Baihua Hu Zhangwei Dai Changhui |
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| 作者单位： | Nan jing Universitv of Aeronautics and Astronautics，Nanjing，China，210016 |
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| 摘 要： | ＥＸＰＥＲＩＭＥＮＴＡＬＡＮＤＮＵＭＥＲＩＣＡＬＩＮＶＥＳＴＩＧＡＴＩＯＮＳＯＦＢＯＴＨＦＬＯＷＩＮＤＵＣＥＤＣＡＶＩＴＹＯＳＣＩＬＬＡＴＩＯＮＡＮＤＩＴＳＳＵＰＰＲＥＳＳＩＯＮＢＹＡＣＯＵＳＴＩＣＥＸＣＩＴＡＴＩＯＮＬｕｏＢａｉｈｕａ；ＨｕＺｈａｎ...
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EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF BOTH FLOW INDUCED CAVITY OSCILLATION AND ITS SUPPRESSION BY ACOUSTIC EXCITATION |
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| Luo Baihua, Hu Zhangwei, Dai Changhui.EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF BOTH FLOW INDUCED CAVITY OSCILLATION AND ITS SUPPRESSION BY ACOUSTIC EXCITATION[J].Chinese Journal of Aeronautics,1996(3). |
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| Authors: | Luo Baihua Hu Zhangwei Dai Changhui |
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| Abstract: | 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. |
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| Keywords: | cavity flow oscillations acoustic excitation separated flow numerical analysis Simulation |
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