Analysis of uniform and adaptive LES in natural convection flow

Andreas Hauser, Gabriel Wittum

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

2 Scopus citations

Abstract

After an introduction to the underlying problem, the governing equations and discretisation schemes, we present in the first part of this contribution the calculation of the model and discretisation error in a turbulent natural convection flow in a tall cavity. It is based on uniform grid refinement and explicit values are given for the error components. In the second part we apply for the same problem local grid adaptation using four different a posteriori error indicators. The computational results are compared with experiments and it is shown, that adaptively refined grids with considerably less elements deliver comparable results gained on finer uniformly refined grids.

Original languageEnglish (US)
Title of host publicationQuality and Reliability of Large-Eddy Simulations
PublisherSpringer Netherland
Pages105-116
Number of pages12
Volume12
ISBN (Print)9781402085772
StatePublished - 2008
Externally publishedYes
Event1st Meeting on Quality and Reliability of Large-Eddy Simulation, QLES 2007 - Leuven, Belgium
Duration: Oct 22 2007Oct 24 2007

Publication series

NameERCOFTAC Series
Volume12
ISSN (Print)1382-4309
ISSN (Electronic)2215-1826

Other

Other1st Meeting on Quality and Reliability of Large-Eddy Simulation, QLES 2007
CountryBelgium
CityLeuven
Period10/22/0710/24/07

Keywords

  • Local adaptive a posteriori error indicator
  • Model and discretisation error on uniform grids
  • Natural convection

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Computational Mathematics

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