Author(s)

R. Lohner, J.D. Baum, E.L. Mestreau, C. Charman & D. Pelessone

Abstract

Fluid-structure interaction using adaptive embedded unstructured grids R. ~ohner', J.D. ~ a u m ~ , E.L. ~ e s t r e a u ~ , C. charman3 & D. pelessone4 I School of Computational Sciences and Informatics, George Mason University, USA. 2 Applied Physics Operations, Science Applications International Corp., USA. 3 General Atomics, USA. 4 Engineering Software System Solutions, USA Abstract Fluid-structure interaction cases with severe topological change due to fragmentation or rupture in the structure have prompted the development of flow solvers using a so-called embedded mesh approach. A simple embedded domain method for node-based unstructured grid solvers is presented. Edges crossing embedded surface faces are either removed or duplicated. Several techniques to improve the treatment of boundary points close to the immersed surfaces are explored. Adaptive mesh refinement based on proximity to the curvature or comers of the embedded CSD surfaces is used to enhance the accuracy of the solution

Keywords