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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. Computers & Fluids. Elsevier. ISSN 0045-7930 (Submitted)

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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/130187/
Document Type:Article
Title:A Staggered Grid Multi-Level ILU for steady incompressible flows
Authors:
AuthorsInstitution or Email of AuthorsAuthors 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:Computers & Fluids
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Publisher:Elsevier
ISSN:0045-7930
Status:Submitted
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 Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben SISTEC
Location: Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology > High Performance Computing
Deposited By: Thies, Jonas
Deposited On:20 Nov 2019 12:46
Last Modified:20 Nov 2019 12:46

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