Numerical simulation of two-dimensional cross flow past a cylinder using an unstructured mesh based fully implicit second order coupled method

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Abstract

This paper discusses the computation of unsteady two-dimensional incompressible viscous flow on unstructured cell-centered collocated grids using a finite volume technique. A fully second order coupled resolution method is presented for solving unsteady Navier-Stokes equations, an alternative to classical segregated approaches, like SIMPLE or P1SO. Whereas the segregated methods lead to a sequential resolution of discrete equations and under-relaxation procedures, with the fully coupled method, only one linear system in velocity-pressure is solved, no relaxation or special treatment is required to ensure convergence, as equation coupling is done implicitly. The non-linear effects are thus handled better, and the non-linear residues convergence is considerably accelerated. Robustness and efficiency, ability and accuracy of this method are demonstrated to simulate unsteady flow around a cylinder at various Reynolds numbers.

Original languageEnglish
Title of host publicationEACWE 2005 - 4th European and African Conference on Wind Engineering
Pages90-91
Number of pages2
Publication statusPublished - 1 Dec 2005
Event4th European and African Conference on Wind Engineering, EACWE 2005 - Prague, Czech Republic
Duration: 11 Jul 200515 Jul 2005

Conference

Conference4th European and African Conference on Wind Engineering, EACWE 2005
CountryCzech Republic
CityPrague
Period11/07/0515/07/05

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