Highly Parallel Computing of a Multigrid Solver for 3D Navier-Stokes equations

Charles-Henri Bruneau 1, 2, * Khodor Khadra 2
* Corresponding author
1 MEMPHIS - Modeling Enablers for Multi-PHysics and InteractionS
IMB - Institut de Mathématiques de Bordeaux, Inria Bordeaux - Sud-Ouest
Abstract : In order to efficiently obtain all frequencies of the solution, a multigrid solver is used to solve the Navier-Stokes equations for incompressible flows. The method uses a cell-by-cell Gauss-Seidel smoother that is not straightforwardly parallelizable. Moreover the coarsest grids are very coarse and cannot be solved in parallel. The proposed method splits the 3D Cartesian computational domain into well balanced sub-domains with respect to two dimensions. Efficient parallel procedures using MPI libraries permit us to get a high strong and weak scalability of the whole parallel software. Comparison is done between MPI and hybrid MPI/OpenMP parallelism.
Document type :
Journal articles
Complete list of metadatas

Cited literature [29 references]  Display  Hide  Download

https://hal.inria.fr/hal-01247678
Contributor : Charles-Henri Bruneau <>
Submitted on : Friday, September 16, 2016 - 3:17:57 PM
Last modification on : Tuesday, December 18, 2018 - 4:06:07 PM

File

MPINS.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01247678, version 2

Collections

Citation

Charles-Henri Bruneau, Khodor Khadra. Highly Parallel Computing of a Multigrid Solver for 3D Navier-Stokes equations. Journal of computational science, Elsevier, 2016, 17 (1). ⟨hal-01247678v2⟩

Share

Metrics

Record views

467

Files downloads

317