[CFD] The k - epsilon Turbulence Model

An introduction to the k - epsilon turbulence model that is used by all mainstream CFD codes (OpenFOAM, Fluent, CFX, Star, COMSOL, Saturne). The following topics are covered:

1) 9:30 What is the standard k - epsilon model?

2) 11:05 How has the model evolved over time and what variant am I using?

3) 13:30 What are the damping functions and why are they needed?

4) 17:56 What are high-Re and low-Re formulations of the k - epsilon model?

#kEpsilon #fluidmechanics101 #cfd

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Some useful references:

1) W. P. Jones and B. E. Launder
The prediction of laminarization with a two-equation model of turbulence, Int. Journal of Heat and Mass Transfer, 15, 1972, pp. 301-314.

2) B. E. Launder and D. B. Spalding
The numerical computation of turbulent flows, Comp. Methods in App. Mech and Engineering 3, 1974, pp. 269-289.

3) B. E. Launder and B. I. Sharma
Application of the energy dissipation model of turbulence to the calculation of flow near a spinning disc, Letters in Heat and Mass Transfer, 1974, 1, pp. 131-138.

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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.

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1) would it be possible to give a lecture to summarize the best applications for each turbulence model?

2) could you give a lecture about implicit and explicit models and their applications ?

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