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A Staggered Grid Multi-Level ILU for steady incompressible flows

Baars, Sven and van der Klok, Mark and Thies, Jonas and Wubs, Fred W. (2020) A Staggered Grid Multi-Level ILU for steady incompressible flows. International Journal for Numerical Methods in Fluids. Wiley. doi: 10.1002/fld.4913. ISSN 0271-2091.

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Official URL: https://onlinelibrary.wiley.com/doi/epdf/10.1002/fld.4913

Abstract

We present a parallel fully coupled multi-level incomplete factorization preconditioner for the 3D stationary incompressible Navier-Stokes equations on a structured grid. The algorithm and software are based on the robust two-level method developed in [1]. In this paper, we identify some of the weak spots of the two-level scheme and propose remedies such as a different domain partitioning and recursive application of the method. We apply the method to the wellknown 3D lid-driven cavity benchmark problem, and demonstrate its superior robustness by comparing with a segregated SIMPLE-type preconditioner.

Item URL in elib:https://elib.dlr.de/137927/
Document Type:Article
Title:A Staggered Grid Multi-Level ILU for steady incompressible flows
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Baars, Svens.baars (at) rug.nlUNSPECIFIED
van der Klok, Markmlvanderklok (at) gmail.comUNSPECIFIED
Thies, JonasJonas.Thies (at) dlr.deUNSPECIFIED
Wubs, Fred W.f.w.wubs (at) rug.nlUNSPECIFIED
Date:2020
Journal or Publication Title:International Journal for Numerical Methods in Fluids
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI:10.1002/fld.4913
Publisher:Wiley
ISSN:0271-2091
Status:Published
Keywords:Parallel, incomplete factorization, multi-level, incompressible Navier-Stokes, F-matrix, lid-driven cavity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Vorhaben SISTEC (old)
Location: Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology > High Performance Computing
Institut of Simulation and Software Technology
Deposited By: Thies, Jonas
Deposited On:24 Nov 2020 13:43
Last Modified:17 Dec 2020 09:55

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