| 非结构动网格在三维可动边界问题中的应用研究 |
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| 引用本文： | 王军利,白俊强,詹浩.非结构动网格在三维可动边界问题中的应用研究[J].航空计算技术,2005,35(3):12-16. |
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| 作者姓名： | 王军利 白俊强 詹浩 |
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| 作者单位： | 西北工业大学,航空学院,陕西,西安,710072 |
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| 摘 要： | 对用于非结构动网格生成的弹簧近似方法进行了研究。通过采用顶点弹簧方法,分析研究了弹簧倔强系数的取值,同时通过引入挤压倔强系数和边界修正,对标准弹簧近似方法进行了改进。改进后的方法可以大大提高网格变形能力和网格质量。应用本文发展的非结构动网格生成方法并通过耦合求解基于(Arb itrary Lagrangian-Eu lerian ALE)描述的Eu ler方程,模拟了做谐和振动的刚性无后掠机翼及柔性M6机翼的跨音速绕流,计算结果与实验结果吻合良好。
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| 关 键 词： | 非结构动网格 弹簧近似 运动边界 非定常流动 Euler方程 |
| 文章编号： | 1671-654X(2005)03-0012-05 |
| 修稿时间： | 2005年4月15日 |
Dynamic Unstructured Grids Method with Applications to Unsteady Flows Invoving Moving Boundaries |
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| WANG Jun-li,BAI Jun-qiang,ZHAN Hao.Dynamic Unstructured Grids Method with Applications to Unsteady Flows Invoving Moving Boundaries[J].Aeronautical Computer Technique,2005,35(3):12-16. |
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| Authors: | WANG Jun-li BAI Jun-qiang ZHAN Hao |
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| Abstract: | In this paper,spring analogy method for dynamic unstructured grids has been studied.The stiffness of the springs in the modified vertex spring analogy has been analyzed.Improvements that considering squashing stiffness and boundary effect has been adopted to the standard method.Applications of the improved spring analogy method to 3-D grids generation show that the new method greatly improves the deforming ability and the quality of the grids.Coupled with 3-D ALE Euler solver this dynamic unstructured grid method has been applied to simulate unsteady transonic flow about 3-D wings.Computational results are in good agreement with those of experiment. |
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| Keywords: | dynamic unstructured grids spring analogy moving boundaries unsteady flow Eule equetion |
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