空气动力学学报2011，Vol.29Issue(4)：447-452,6.
基于动态混合网格的多体分离数值模拟方法
A CFD-and-6DOF-coupled solver for multiple moving object problemsbased on dynamic hybrid grids
摘要
Abstract
A CFD-and-6DOF-coupled solver for multiple moving object problems is presented based on our dynamic hybrid grid technique. A sub-solver for 6-DOF equations is established firstly, and then fully integrated into the unsteady CFD solver to determine moving body dynamics. Meanwhile, the dynamic grid generator is improved to a-chieve better moving grid quality and more efficiency. The basic procedure of this method is as following: Firstly, the aerodynamic forces are computed by our unsteady solver at a certain time step. Secondly, the trajectory is calculated by the 6-DOF model using those aerodynamic parameters as input. Thirdly, the new grid of next time step is generated by our dynamic grid generation method. Repeating those three steps until separation finishes. This CFD-and-6DOF-coupled solver is validated by a typical store separation problem. The computational results are compared with experimental data and other numerical results in references, which demonstrate the accuracy and property for complex multiple moving object problems.关键词
动态混合网格/非定常流动/六自由度/多体分离Key words
dynamic hybrid grids/unsteady flow/six degree-of-freedom/multiple moving body problem分类
航空航天引用本文复制引用
段旭鹏,常兴华,张来平..基于动态混合网格的多体分离数值模拟方法[J].空气动力学学报,2011,29(4):447-452,6.基金项目
国家自然科学基金(10872023) （10872023）
国家重点基础研究发展计划(2009CB723802) （2009CB723802）
