Article,

Large eddy simulation of turbulent incompressible flows by a three-level finite element method

, , and .
SFB 404 Report 2004/07, (2005)
DOI: 10.1002/fld.961

Abstract

The variational multiscale method provides a methodical framework for large eddy simulation of turbulent flows. In this work, a particular implementation in form of a three-level finite element method separating large resolved, small resolved, and unresolved scales is proposed. Residual-free bubbles are used for the numerical approximation of the small-scale momentum equation. A stabilizing term is added, in order to take into account the effect of the small-scale continuity equation. This implementation guarantees the stability of the method without further provisions and offers substantial computational savings on the small-scale level. Furthermore, it is accounted for the unresolved scales by a specific dynamic modeling procedure. The method is tested for two different turbulent flow situations.

Tags

Users

  • @ibb-publication

Comments and Reviews