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用非结构动网格方法模拟有相对运动的多体绕流
引用本文:郭正,李晓斌,瞿章华,刘君.用非结构动网格方法模拟有相对运动的多体绕流[J].空气动力学学报,2001,19(3):310-316.
作者姓名:郭正  李晓斌  瞿章华  刘君
作者单位:国防科技大学航天与材料工程学院
基金项目:国防科学预研基金项目 (98J13 4 1 KJ0 131)
摘    要:发展了用于模拟有相对运动的多体非定常绕流,并计算由流场决定的外弹道的数值方法。该方法采用非结构动网格,显式NND有限体 格式,求解非定常Euler方程,并耦合了刚体动力学方程,作为例证,计算了俯仰振动的NACA0012翼型绕流,计算结果与实验及文献结果吻合,最后,整个策略用于计算二维机翼-外挂物分离流场,并确定了外挂物下落轨迹。

关 键 词:非结构动网格  相对运动  多体非定常绕流  数值模拟  刚体动力学方程  NACA0012翼型绕流
文章编号:0258-1825(2001)03-0310-07
修稿时间:2000年7月11日

Simulation of flows past multi-body in relative motion with dynamic unstructured method
GUO Zheng,LI Xiao bin,QU Zhang hua,LIU Jun.Simulation of flows past multi-body in relative motion with dynamic unstructured method[J].Acta Aerodynamica Sinica,2001,19(3):310-316.
Authors:GUO Zheng  LI Xiao bin  QU Zhang hua  LIU Jun
Abstract:A methodology is developed to simulate unsteady flows about multi body in relative motion and compute the trajectory determined by this flowfield. The unsteady, compressible Euler equations are solved on dynamic unstructured grids by explicit, finite volume NND scheme, and, the fluid dynamics and rigid body dynamics equations are coupled. Computing the flow past a sinusoidally pitching airfoil validates this dynamic, unstructured flow solver, and the results compare well with the experimental data. Finally, the whole methodology is used to simulate the free fall of a two dimensional store after separation from a wing section.
Keywords:dynamic unstructured grids  relative motion  multi  body
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