| 混合层绕流圆柱旋涡脱落的数值研究 |
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| 引用本文： | 张洪泉.混合层绕流圆柱旋涡脱落的数值研究[J].力学学报,1993,25(3):356-361. |
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| 作者姓名： | 张洪泉 |
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| 作者单位： | 天津大学力学系 |
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| 摘 要： | 对平面混合层绕流圆柱时的旋涡脱落和流动结构进行了数值研究。方法是用一空间、时间三阶精度的有限差分格式解二维不可压Navier-Stokes方程和连续性方程。计算时雷诺数Re取为1000,混合层速度比Ra从0到1,混合层动量厚度θ由0.2到2。
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| 关 键 词： | 混合层 圆柱绕流 旋涡脱落 |
A NUMERICAL STUDY OF VORTEX SHEDDING FROM A CIRCULAR CYLINDER IN PLANE MIXING LAYERS |
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| Zhang Hongquan.A NUMERICAL STUDY OF VORTEX SHEDDING FROM A CIRCULAR CYLINDER IN PLANE MIXING LAYERS[J].chinese journal of theoretical and applied mechanics,1993,25(3):356-361. |
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| Authors: | Zhang Hongquan |
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| Abstract: | Numerical simulations are presented for flows about a circular cylinder which is spanwise placed at the center of plane mixing layers. A temporally and spatially third-order finite differencing scheme is used to solve the 2-D incompressible Navier-Stokes and continuity equations. The Reynolds number for computation is fixed at Re=1000. The effects of the velocity ratio Ra and the momentum thickness θ of the mixing layer on flow structures are studied by changing Ra from 0.0 to 1.0 and θ from 0.2 to 2.0. |
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| Keywords: | mixing layers flows about a circular cylinder vortex shedding |
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