多块变形网格在非定常计算中的应用

介绍了一种适用于包含运动边界非定常计算的高效多块贴体变形网格生成方法,在每块网格中变形网格生成采用基于弧长的超限插值生成方法,能够较好保持原始网格的正交性、光滑性和质量.在采用双时间步的非定常RANS解算器中发展了此网格变形方法.通过两段翼型襟翼俯仰振荡和导弹的纵向舵偏控制的非定常计算对此网格变形方法进行了验证.本方法生成的变形网格质量良好.

Unsteady Flow Calculations with a Parallel Multiblock Moving Mesh Algorithm

A dynamic moving mesh algorithm designed for multiblock 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...