Unsteady Flow Calculations with a Parallel Multiblock Moving Mesh Algorithm
Unsteady Flow Calculations with a Parallel Multiblock Moving Mesh Algorithm
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DOI：
10.2514/2.1442
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发表时间：
2001
期刊：
影响因子：
2.5
通讯作者：
H. Tsai;A. Wong;Jinsheng Cai;Y. Zhu;Feng Liu
中科院分区：
文献类型：
--
作者：
H. Tsai;A. Wong;Jinsheng Cai;Y. Zhu;Feng Liu
提出了一种适用于贴体网格非定常流场多块并行计算的动态移动网格并行算法。每个块内的移动网格算法使用基于弧长的超限插值方法，该方法在块驻留的本地处理器上独立地执行。弹簧网络方法用于确定块的角点的运动，其可以在一般的多块方法中以非结构化的方式连接。将平滑操作符应用于块面边界和边缘的点，以保持网格平滑度和网格角度。采用多重网格和双时间推进技术，沿着移动网格方法，发展了一种多块并行Euler/Navier-Stokes求解器。给出了颤振模拟中发现的具有变形形状的翼型和机翼的非定常流计算结果
A novel parallel dynamic moving mesh algorithm designed for multiblock parallel unsteady flow calculations using body-fitted grids is presented. The moving grid algorithm within each block uses a method of arc-length-based transfinite interpolation, which is performed independently on local processors where the blocks reside. A spring network approach is used to determine the motion of the corner points of the blocks, which may be connected in an unstructured fashion in a general multiblock method. A smoothing operator is applied to the points of the block face boundaries and edges to maintain grid smoothness and grid angles. A multiblock parallel Euler/Navier-Stokes solver using multigrid and dual-time stepping is developed along with the moving mesh method. Computational results are presented for the unsteady flow calculations of airfoils and wings with deforming shapes as found in flutter simulations