Wall-modeling in large eddy simulation: Length scales, grid resolution, and accuracy

Soshi Kawai, Johan Larsson

Research output: Contribution to journalArticlepeer-review

220 Citations (Scopus)

Abstract

This paper addresses one of the most persistent errors in wall-modeled large eddy simulation: the inevitable presence of numerical and subgrid modeling errors in the first few grid points off the wall, which leads to the so-called "log-layer mismatch" with its associated 10-15% error in the predicted skin friction. By considering the behavior of turbulence length scales near a wall, the source of these errors is analyzed, and a method that allows for the log-layer mismatch to be removed, thereby yielding accurately predicted skin friction, is proposed.

Original languageEnglish
Article number015105
JournalPhysics of Fluids
Volume24
Issue number1
DOIs
Publication statusPublished - 2012 Jan 5
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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