High-order implicit discontinuous galerkin scheme for unsteady turbulent flows

Hiroyuki Asada, Soshi Kawai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new implicit time integration scheme for unsteady turbulent flow computations with high-order discontinuous Galerkin (DG) methods is proposed. In the newly proposed implicit scheme, algebraic equations are directly and independently solved without sweeps to exploit a compactness of the DG methods. On computations of an inviscid Taylor-Green vortex problem, the sweep-free implicit gives well agreed time evolution with an explicit time integration and conventional global implicit time integration scheme, a LU-SGS scheme. Additionally, the estimated computational cost of the sweep-free implicit scheme is lower than of the LU-SGS scheme.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
Publication statusPublished - 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: 2017 Jan 92017 Jan 13

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Other

Other55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period17/1/917/1/13

ASJC Scopus subject areas

  • Aerospace Engineering

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