Local optimization of the convergence rates of implicit time advancements for LES of complex flows

F. Daude, I. Mary, P. Comte

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

An improvement of an implicit scheme for Large-Eddy Simulation is proposed in this paper. This local optimization (LO) of the convergence is based on the reduction of the high computational effort per time step inherent to the use of implicit time stepping methods. Indeed, the LO is a local adpatation of the iteration number in the inner process. Moreover an implicitation of the boundary condition between two domains where the iteration number is different, is also used. This procedure is validated on two test cases. The first one is a 2D laminar vortex advection which allows us to check the potential of this LO. On a transitional boundary layer around an airfoil near stall at a chord Reynolds number of 2.1 × 106, it is shown that this procedure can be used without damaging the accuracy.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 36th AIAA Fluid Dynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages1654-1668
Number of pages15
ISBN (Print)1563478102, 9781563478109
DOIs
Publication statusPublished - 1 Jan 2006
Externally publishedYes
Event36th AIAA Fluid Dynamics Confernce - San Francisco, CA, United States
Duration: 5 Jun 20068 Jun 2006

Publication series

NameCollection of Technical Papers - 36th AIAA Fluid Dynamics Conference
Volume3

Conference

Conference36th AIAA Fluid Dynamics Confernce
Country/TerritoryUnited States
CitySan Francisco, CA
Period5/06/068/06/06

Fingerprint

Dive into the research topics of 'Local optimization of the convergence rates of implicit time advancements for LES of complex flows'. Together they form a unique fingerprint.

Cite this