| 二维高亚声速空腔流激振荡的数值模拟研究 |
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| 引用本文： | 罗柏华.二维高亚声速空腔流激振荡的数值模拟研究[J].空气动力学学报,2002,20(1):84-88. |
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| 作者姓名： | 罗柏华 |
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| 作者单位： | 上海大学,上海市应用数学和力学研究所,上海,200072 |
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| 摘 要： | 采用基于P .L .Roe的近似Riemann解的修正Osher&Chakravarthy (MOC)三阶TVD有限差分格式 ,数值求解二维雷诺平均全Navier Stokes方程 ,并用Cebeci Smith代数湍流模型 (对腔内区域作修正 )来模拟湍流效应 ,时间方向的积分采用四阶Runge Kutta方法 ,通过对GAMM超音速前台阶绕流的计算 ,验证了格式及程序的有效性 ,对高亚声速来流下的空腔流动作了数值模拟研究 ,取得了较好的效果
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| 关 键 词： | 亚声速流 空腔流动 数值模拟 流动振荡 |
| 文章编号： | 0258-1825(2002)01-0084-05 |
| 修稿时间： | 2000年11月1日 |
Numerical simulation of 2-D high subsonic cavity flow oscillation |
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| Luo Bai,hua.Numerical simulation of 2-D high subsonic cavity flow oscillation[J].Acta Aerodynamica Sinica,2002,20(1):84-88. |
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| Authors: | Luo Bai hua |
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| Abstract: | The flow induced oscillation in a rectangular cavity is studied numerically by solving the two dimensional time-dependent Reynolds averaged Navier Stokes equations, Turbulence closure is achieved using Cebeci Smith model with relaxation modification. The algorithm used here is the Modified Osher Chakravarthy Scheme which is based on Roe's flux difference split approximate Riemann solver. Solution is advanced in time by a four stage Runge Kutta time stepping scheme. This approach is verified by the GAMM example. High subsonic cavity flow is calculated and the self sustained oscillations are produced clearly. |
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| Keywords: | subsonic flow cavity flow numerical simulation |
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