临近空间飞行器多物理场耦合建模的网格映射方法

临近空间飞行器的研制面临许多复杂的问题和挑战,涉及总体、气动、结构、控制、防热、动力等多个学科和专业领域的相互作用、高度耦合的子系统。全系统、全流程的仿真验证与性能评估能够为设计工作提供重要依据,缩短研制周期。而气动、结构、防热等专业的仿真建模和模型解算基于有限体积法或有限元方法,依赖于不同的工具软件,且网格的划分方法不同。本文研究了临近空间高超声速飞行器多物理场耦合建模方法,研究并实现了异构网格耦合界面之间与耦合域之间的信息传递方法,从而实现了临近空间高超声速飞行器的多物理场耦合建模与仿真。

Grid Mapping Method of Multi-physics Coupled Modeling for Near Space Vehicle

The development of near space vehicle is confronting many complex problems and challenges,involving many different subsystems which are highly interactive and coupled,such as overall design,aerodynamics,structure,thermal protection,control,dynamics and so on.The simulation validation and performance evaluation based on whole system and whole flow can provide important gist for the design,also accelerating the developing cycle.However,the simulation modeling and computation of subjects such as aerodynamics,structure and thermal protection are based on the finite volume method or the finite element method,depending on different software tools,and the partition methods of mesh are different as well.The coupled modeling method of multi-physics in the field of near space hypersonic vehicle is researched by implementing the method of message-passing which involves coupling interfaces of heterogeneous mesh and coupled region.The method of coupling modeling and simulation is implemented,which involves multi-physics in the fields of near space hypersonic vehicle.