[CFD] The Transition SST (gamma - Re_theta) model

An introduction to the Transition SST model that is used to capture laminar-turbulent transition in modern, unstructured CFD codes (OpenFOAM, Fluent, CFX, Star). The following topics are covered:

1) 3:03 How is the Transition SST model different to the k-omega SST model?

2) 4:45 What is gamma?

3) 14:45 What is Re_theta?

3) 27:24 What boundary conditions should be applied to the model?

#transitionSST #fluidmechanics101 #gammaRetheta

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Some useful references:
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1) ANSYS FLUENT User Manual
4.7.2 Transport Equations for the Transition SST Model
http://www.afs.enea.it/project/neptun...

2) Robin Blair Langtry, 'A Correlation-Based Transition Model using Local
Variables for Unstructured Parallelized CFD codes', University of Stuttgart,PhD Thesis, 2006

3) P. Malan, K. Suluksna, E. Juntasaro, 'Calibrating the gamma-Re_theta Transition Model for Commercial CFD', 47th AIAA Meeting, 2009.

4) Langley Research Centre, NASA turbulence models database:
https://turbmodels.larc.nasa.gov/lang...

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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.