| Literature DB >> 20216919 |
R Mittal1, H Dong, M Bozkurttas, F M Najjar, A Vargas, A von Loebbecke.
Abstract
A sharp interface immersed boundary method for simulating incompressible viscous flow past three-dimensional immersed bodies is described. The method employs a multi-dimensional ghost-cell methodology to satisfy the boundary conditions on the immersed boundary and the method is designed to handle highly complex three-dimensional, stationary, moving and/or deforming bodies. The complex immersed surfaces are represented by grids consisting of unstructured triangular elements; while the flow is computed on non-uniform Cartesian grids. The paper describes the salient features of the methodology with special emphasis on the immersed boundary treatment for stationary and moving boundaries. Simulations of a number of canonical two- and three-dimensional flows are used to verify the accuracy and fidelity of the solver over a range of Reynolds numbers. Flow past suddenly accelerated bodies are used to validate the solver for moving boundary problems. Finally two cases inspired from biology with highly complex three-dimensional bodies are simulated in order to demonstrate the versatility of the method.Year: 2008 PMID： 20216919 PMCID： PMC2834215 DOI： 10.1016/j.jcp.2008.01.028
Source DB: PubMed Journal: J Comput Phys ISSN： 0021-9991 Impact factor: 3.553