유체-구조 연성 해석을 위한 common-refinement 기반의 불일치 격자 간 정보 전달 기법 연구

Abstract

During multi-physics or multi-phase simulations accompanying fluid-structure thermal interaction, data transfer problems always arise along non-matching interfaces caused by different computational meshes for each physical domain. Common-refinement scheme, among several available methods, is attractive since it is known to yield-conservative and accurate data transfer along non-matching interface boundary. This is particularly important in simulating compressible unsteady fluid-structure thermal interaction inside solid propellant rockets, where grid size along solid-fluid interfaces is substantially different. From this perspective, we examine performances of a common-refinement-based data transfer scheme between structured quadrilateral (structure part) and unstructured triangular (fluid part) meshes by comparing the computed results with other data transfer methods.