REVIEW ARTICLES: Turbulence Theories and Models Incorporating Experimental and Computer Simulation Knowledge of Coherent Structures

Models Based on Dynamical Features of the Wall Layer

[+] Author and Article Information
J. D. A. Walker

Detartment of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015

Appl. Mech. Rev 43(5S), S232-S239 (May 01, 1990) doi:10.1115/1.3120813 History: Online April 30, 2009


Recent experimental and theoretical results related to the turbulence production process near a wall are reviewed. It is argued that the principal element of boundary-layer turbulence is the convected hairpin vortex and that bursting of the wall-layer flow is a viscous-inviscid interaction provoked by the adverse pressure gradient due to the vortex. The consequences of this picture for the development of models for the mean near-wall flow are discussed. Recent models for the mean wall-layer velocity profile, in both two- and three-dimensional boundary layers, which are based on the dynamical picture presented here, are reviewed.

Copyright © 1990 by American Society of Mechanical Engineers
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