| 相于结构非对称模型的数值计算方法 |
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| 引用本文： | 方一红,罗纪生. 相于结构非对称模型的数值计算方法[J]. 水动力学研究与进展(A辑), 1998, 0(1) |
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| 作者姓名： | 方一红 罗纪生 |
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| 作者单位： | 天津大学力学与工程测试系 天津300072 |
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| 基金项目： | 国家自然科学基金资助课题 |
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| 摘 要： | 本文针对湍流流场中普遍存在的非对称相干结构,发展了一套可用于计算相于结构非对称理论模型的计算方法,并运用该方法研究了由流动稳定性理论提供的相干结构非对称模型——一般共振三波的演化规律,计算结果与实验及数值模拟基本一致.
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| 关 键 词： | 相干结构 一般共振三波 仿射坐标 |
Algorithm for Unsymmetrical Models of Coherent Stuctures |
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| Fang Yi-hong Luo Ji-sheng. Algorithm for Unsymmetrical Models of Coherent Stuctures[J]. Chinese Journal of Hydrodynamics, 1998, 0(1) |
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| Authors: | Fang Yi-hong Luo Ji-sheng |
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| Abstract: | A new algorithm for the model of unsymmetric coherent structure is developed in this study, in accordance with the fact that streamwise vortex pairs in turbulent flow are largely unsymmetric. By using the idea of general resonant triad, the mechanism for the origin and evolution of the coherent structures are investi-gated with the algorithm. The computed results are generally in agreement with those from the experiments and numerical simulations. |
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| Keywords: | coherent structures general resonant triad affine coordinate. |
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