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Calculation of Unsteady Flow Using Dynamic Unstructured Grids
Author(s): 
Pages: 24-29
Year: Issue:  3
Journal: AIRCRAFT DESIGN

Keyword:  非结构动网格弹簧近似欧拉方程非定常气动力;
Abstract: 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耦合求解基于 Arbitrary Lagrangian -Eulerian(ALE)描述的欧拉方程,计算了谐和振动NACA0012翼型及矩形机翼的跨声速非定常气动力,计算结果与参考文献提供的结果及实验结果吻合良好.
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