A DIRECT PARALLEL ALGORITHM FOR THE EFFICIENT SOLUTION OF THE PRESSURE-CORRECTION EQUATION OF INCOMPRESSIBLE FLOW PROBLEMS USING LOOSELY COUPLED COMPUTERS |
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| Authors: | M Soria C D Pérez-Segarra A Oliva |
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| Affiliation: | Department of Mechanical Engineering , Institute of Technology, University of Minnesota , 111 Church Street S.E., Minneapolis, Minnesota, 55455, USA |
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| Abstract: | The numerical simulation of time-accurated complex flows needs large computational resources. For the case of incompressible flows, the solution of the pressure-correction equation is typically the main bottleneck, especially on loosely coupled parallel computers such as PC clusters. An algorithm intended to solve this problem is presented. It is a variant of the Schur complement method that uses direct solvers for each subdomain and for the interface equation. The inverse of the interface matrix is evaluated and stored in parallel. Simulation of turbulent natural convection is used as a benchmark to show its potential and limitations. |
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