A Mesh Adjustment Scheme for Embedded Boundaries  

作　　者：J.S.Sachdev C.P.T.Groth 

机构地区：[1]University of Toronto Institute for Aerospace Studies,4925 Dufferin Street,Toronto,Ontario,M3H 5T6,Canada.

出　　处：《Communications in Computational Physics》2007年第6期1095-1124,共30页计算物理通讯（英文）

基　　金：supported by a Premier’s Research Excellence Award from the Ontario Ministry of Energy,Science,and Technology and by the Natural Sciences and Engineering Research Council of Canada;Funding for the parallel computing facility used to perform the computations described herein was obtained from the Canadian Foundation for Innovation and Ontario Innovation Trust(CFI Project No.2169)。

摘　　要：An adaptive meshing technique and solution method is proposed in which a two-dimensional body-fitted multi-block mesh is locally adjusted to arbitrarily embedded boundaries that are not necessarily aligned with the mesh.Not only does this scheme allow for rapid and robust mesh generation involving complex embedded boundaries,it also enables the solution of unsteady flow problems involving bodies and interfaces moving relative to the flow domain.This scheme has been implemented within a block-based adaptive mesh refinement(AMR)numerical framework which can ease computational expense while maintaining a detailed representation of the embedded boundary and providing an accurate resolution of the spatial characteristics of the fluid flow.Rigid body motion and evolving motion due to physical processes are considered.A block-based AMR level set method is used to deal with evolving embedded boundaries.Numerical results for various test problems are presented to verify the validity of the scheme as well as demonstrate the capabilities of the approach for predicting complex two-dimensional inviscid and laminar fluid flows.

关 键 词：Dynamic and stationary embedded boundaries mesh adjustment algorithm blockbased adaptive mesh refinement. 

分 类 号：O35[理学—流体力学]