| 轴对称射流场涡结构的离散涡段方法研究 |
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| 引用本文： | 林建忠,林江.轴对称射流场涡结构的离散涡段方法研究[J].上海力学,1999,20(2):148-155. |
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| 作者姓名： | 林建忠 林江 |
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| 作者单位： | [1]浙江大学力学系 [2]杭州应用工程技术学院 |
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| 摘 要： | 本文用三维离散涡方法，模拟了轴对称圆射流涡结构的发展。
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| 关 键 词： | 涡方法 大涡结构 轴对称 射流 离散涡段 |
ON THE VORTEX STRUCTURES IN AXISYMMETRIC TUBULENT JET FLOWS |
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| Lin Jiangzhong Lin Jiang Zhu Libing.ON THE VORTEX STRUCTURES IN AXISYMMETRIC TUBULENT JET FLOWS[J].Chinese Quarterly Mechanics,1999,20(2):148-155. |
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| Authors: | Lin Jiangzhong Lin Jiang Zhu Libing |
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| Abstract: | Based on the three-dimensional vortex method, a numerical simulation of the axisymmetric round jet is conducted in this paper. The results agree well with the work of Chung and Troutt. After the work mentioned above, we investigate the three-dimensionally evolving jets subject to a radial perturbations with azimuthal wavenumber taken to be six. We find that because of the nonlinear induced movement, the perturbations are strengthened. In the shear layer, the streamwise vorticities are very intense, In addition, we investigate the elliptic jet. The growth rate of the short axis of the elliptic-shaped vortex filament is much faster than the long one. We find that the vortices have the trend to become round vortices. |
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| Keywords: | vortex methcxis vortex structure axisymmetric jet |
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