Parallel Poisson solver for revolved unstructured grids. DNS of the flow around a sphere at Re = 3700.

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Title:	Parallel Poisson solver for revolved unstructured grids. DNS of the flow around a sphere at Re = 3700.
Author:	Borrell Pol, Ricard; Lehmkuhl Barba, Oriol; Rodríguez Pérez, Ivette María; Pérez Segarra, Carlos David; Oliva Llena, Asensio
Other authors:	Universitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics; Universitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
Abstract:	In this paper a parallel direct Poisson solver for DNS simulation of turbulent flows in domains of revolution using unstructured meshes is presented. It is based on a Fourier diagonalization in the azimuthal direction and a Schur Complement based decomposition in the other two directions. Numerical experiments carried out on the IBM MareNostrum supercomputer, are presented in order to test the robustness and efficiency of the algorithm up to 640 CPU. This solver is being used for a DNS of a turbulent flow around a sphere. The results of the initial case of study at Re = 3700 are presented.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Física::Termodinàmica::Física de la transmissió de la calor -Parallel direct Poisson solver -Direct numerical simulation -Calor -- Radiació i absorció -- Mètodes numèrics
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Document type:	Article - Published version Conference Object
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