| 多孔介质空心圆柱绕流的摄动解 |
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| 引用本文： | 徐力群.多孔介质空心圆柱绕流的摄动解[J].空气动力学学报,1990,8(1):39-47. |
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| 作者姓名： | 徐力群 |
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| 作者单位： | 上海船用柴油机研究所 |
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| 摘 要： | 本文主要讨论了绕多孔介质空心圆柱的有势流动问题。运用摄动方法,给出了速度势的四阶近似,然后得到了圆柱表面的无量纲的压力系数和阻力系数。结果发现在势流的情况下多孔介质圆柱受到附加阻力作用,并且在圆柱的喷射或吸收流体的特征速度与来流特征速度的比值是一个小量的时候,阻力系数与特征速度比成简单的线性关系。
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| 关 键 词： | 位流 绕流 空心圆柱 摄动解 |
PERTURBATION SOLUTION TO THE FLOW ABOUT A HOLLOW CIRCULAR CYLINDER OF POROUS MEDIA |
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| Xu Liqun.PERTURBATION SOLUTION TO THE FLOW ABOUT A HOLLOW CIRCULAR CYLINDER OF POROUS MEDIA[J].Acta Aerodynamica Sinica,1990,8(1):39-47. |
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| Authors: | Xu Liqun |
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| Institution: | Shanghai Marine Diesel Engine Research Institute |
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| Abstract: | We discuss a potential flow about a hollow circular cylinder of porous media in this paper.Using the perturbation method we have got the fourth order of approximation of the velocity potential to the problem. Then the dimensionless pressure coefficient on the surface of the circular cylinder and the dimensionless drag coefficient of the circular cylinder have been obtained.It has been found that the drag of the circular cylinder is in no case equal to zero. |
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| Keywords: | potential flow porous media perturbation method |
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