| 论流动的对称性及其相关的恒定性 |
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| 引用本文： | 李占松,朱士江.论流动的对称性及其相关的恒定性[J].河南科学,2009,27(9):1098-1101. |
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| 作者姓名： | 李占松 朱士江 |
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| 作者单位： | 1. 郑州大学,水利与环境学院,郑州,450001
2. 东北农业大学,水利与建筑学院,哈尔滨,150030 |
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| 基金项目： | 河南省教育厅基础与前沿技术研究项目 |
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| 摘 要： | 通过对非线性代数方程导致流动的非对称性、非线性偏微分方程导致流动的非对称性、流动的恒定性及其对对称性的影响的论述，指出：对平面二维对称几何边界单一的流动，即仅有一个进口断面和一个出口断面的流动，进口断面流动的对称性并不能决定出口断面流动的对称性，亦即整个流场流动的对称性．
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| 关 键 词： | 水流运动 几何边界 突扩流动 对称性 |
Symmetric Flow and Its Relative Steady |
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| Li Zhansong,Zhu Shijiang.Symmetric Flow and Its Relative Steady[J].Henan Science,2009,27(9):1098-1101. |
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| Authors: | Li Zhansong Zhu Shijiang |
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| Affiliation: | 1. School of Water Conservancy and Envirenmetal Engineering;Zhengzhou University;Zhengzhou 450001;China;2. School of Water Conservancy and Building Engineering;Northeast Agricultural University;Harbin 150030;China |
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| Abstract: | The following problems are discussed:nonlinear equations result in non-symmetric flow;nonlinear partial differential equations results in non-symmetric flow;the constancy of flow and its influence on symmetry of flow. It is pointed that,as a flow of 2D symmetric geometry boundary which has only one entrance section and one exit section,the symmetric flow on the upstream section doesn't determine if the downstream section is symmetric or not,even the whole flow field. |
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| Keywords: | water flow geometry boundary sudden expansion flow symmetry of flow |
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