[CFD] Eddy Viscosity Models for RANS and LES

An introduction to eddy viscosity models, which are a class of turbulence models used in RANS and LES. Popular eddy viscosity models include the k epsilon model and the k omega SST model.

The talk is broken down into the following sections:

1) 03:50 Which turbulence models are eddy viscosity models?

2) 05:27 A complete derivation of the eddy viscosity formula for the Reynolds stresses

3) 37:50 Limitations of eddy viscosity turbulence models

#eddyViscosity #cfd #fluidmechanics101

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Some useful references:

1) T. J. Craft, B. E. Launder, and K. Suga, 'Development and application of a cubic
eddy-viscosity model of turbulence', Int. J. Heat and Fluid Flow 17: 108-115, 1996.
https://www.researchgate.net/publicat...

2) M. Leschziner. 'Statistical Turbulence Modelling For Fluid Dynamics - Demystified: An Introductory Text For Graduate Engineering Students', August 2015.
https://www.amazon.co.uk/Statistical-...

3) S. Pope. 'Turbulent Flows', Cambridge Univeristy Press, 2000.
https://www.amazon.co.uk/Turbulent-Fl...

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Disclaimer
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The methods, algorithms, equations, formulae, diagrams and explanations in this talk are for educational and demonstrative purposes only. They should never be used to analyse, design, accredit or validate real scientific / engineering / mathematical structures and flow systems. For such applications, appropriate trained, qualified and accredited (SQEP) engineers / scientists should be consulted along with the appropriate documentation, procedures and engineering standards. Furthermore, the information contained within this talk has not been verified, peer reviewed or checked in any way and is likely to contain several errors. It is therefore not appropriate to use this talk itself (or any of the algorithms, equations, formulae, diagrams and explanations contained within this talk) as an academic or technical reference. The reader should consult the original references and follow the verification and validation processes adopted by your company / institution when carrying out engineering calculations and analyses. Fluid Mechanics 101 and Dr. Aidan Wimshurst are not accountable or liable in any form for the use or misuse of the information contained in this talk beyond the specific educational and demonstrative purposes for which it was intended.