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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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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
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
Journal or Publication Title:Computers & Fluids
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
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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