| 旋涡动力学方程非定常动边界条件 |
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| 引用本文： | 关文权.旋涡动力学方程非定常动边界条件[J].工程热物理学报,2002,23(3):289-292. |
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| 作者姓名： | 关文权 |
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| 作者单位： | 上海理工大学动力学院,上海,200093 |
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| 基金项目： | 国家自然科学基金资助项目（No．59876023） |
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| 摘 要： | 详细讨论了旋涡动力学方程非定常动边界条件。给出了任意非定常运动边界上速度旋度的确定方法。并采用了“局部线性化及再校正”技术、时间滞后求解方法，求解每一时间步边界上速度旋度值。这样可以很大程度上节省计算时间。并讨论了数值实验结果，指出动边界问题的非线性特征，对这样复杂的非线性问题不宜作过份简化。
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| 关 键 词： | 旋涡动力学方程 非定常运动 动边界条件 |
| 文章编号： | 0253-231X(2002)03-0289-04 |
| 修稿时间： | 2001年12月10 |
UNSTEADY BOUNDARY CONDITIONS OF VORTEX DYNAMICS EQUATION FOR MOVING BODIES |
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| WU Wen-Quan.UNSTEADY BOUNDARY CONDITIONS OF VORTEX DYNAMICS EQUATION FOR MOVING BODIES[J].Journal of Engineering Thermophysics,2002,23(3):289-292. |
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| Authors: | WU Wen-Quan |
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| Abstract: | The unsteady boundary conditions of vortex dynamics equation for moving bodies are presented, based on which, the vorticities of vortex around arbitrary moving bodies are numerically dotermined. For the computation, the Piecewise Linearization and Recorrect Technique and Time Lag Algorithm are suggested and greatly reduce the required CPU time. Numerical tests demonstrate the inherent non-linear Characteristics of the flow past moving bodies, indicating that, whatever the spectrum or phases, the oscillation of flow field is different from the boundary motion, therefore over- simplified model is not applicable. |
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| Keywords: | vortex dynamics equation unsteady flow boundary condition for moved body |
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