| 基于非结构动网格的跨声速非定常流场求解 |
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| 引用本文： | 王军利,周洲. 基于非结构动网格的跨声速非定常流场求解[J]. 飞行力学, 2009, 27(3) |
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| 作者姓名： | 王军利 周洲 |
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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,同时通过引入防扭转、防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.采用改进后的方法并通过耦合求解了基于ALE(Arbitrary Lagrangian-Eulerian)描述的Euler方程,模拟了做谐和振动的刚性无后掠机翼及某翼身组合体的跨声速绕流.结果表明,改进后的方法可以大大提高网格变形能力和网格质量,且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 非定常流动 Euler方程 |
Calculation of Transonic Unsteady Flow Using Dynamic Unstructured Grids |
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| WANG Jun-li,ZHOU Zhou. Calculation of Transonic Unsteady Flow Using Dynamic Unstructured Grids[J]. Flight Dynamics, 2009, 27(3) |
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| Authors: | WANG Jun-li ZHOU Zhou |
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| Affiliation: | School of Aeronautics;Northwestern Polytechnical University;Xi'an 710072;China |
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| Abstract: | Spring analogue method for dynamic unstructured grids is studied.The spring's stiffness in the modified vertex spring analogue scheme is analyzed.The standard method's improvements considering the preventing extrusion and torsion stiffness coefficients and boundary effect are developed.Coupled with 3-D ALE Euler solver,this improved dynamic unstructured grid method is applied to simulate the unsteady transonic flow about a 3-D rigid wing and a wing-body.Computational results show that the new method greatly... |
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| Keywords: | dynamic unstructured grid spring analogue unsteady flow Euler equation |
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