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Engineering Mathematics
Review of Viscous Flows
Review of Computational Fluid Mechanics
Review of Turbulence and Turbulence Modeling

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The National Science Foundation
ME 637 The National Science Foundation
  Review of Turbulence & Turbulence Modeling
Features of Turbulence | Reynolds Equation and Mixing Length Model | Energy Equations | Correlations and Scales | Vorticity Transport | Two-Equation Model | Stress Transport Models | Rate-Dependent Models | PDF Models |

Introduction to Turbulence Modeling

TURBULENT FLOW

Shortcomings of One-Equation Models

Use of an algebraic equation for the length scale is too restrictive.

Transport of the length scale is not accounted for.

Transport of Second Scale (Boundary Layer)

The transport of a second turbulence scale, z, is given as

z-Equation:

 

where

 = diffusion

 = production

 = destruction,

 = secondary source



Dr. Goodarz Ahmadi | Turbulence & Multiphase Fluid Flow Laboratory | Department of Mechanical & Aeronautical Engineering
Copyright © 2002-2005 Dr. Goodarz Ahmadi. All rights reserved.
Potsdam, New York, 13699
ahmadi@clarkson.edu