🍪 CFD cookie 2 - Visiting all RANS models in OpenFOAM - K-Epsilon Lien-Leschziner - Part 20

Описание: 👉 Turbulence models in OpenFOAM | Theory and numerical pointers 🫡
RANS simulation using the LRN K-Epsilon Lien-Leschziner Turbulence model 😋
Zero Pressure Gradient Flat Plate – Re = 10 000 000 👌


00:00 Introduction
01:28 Review of all turbulence models we have studied so far
05:05 Lien-Leschziner Turbulence model - Litereature review
13:58 The Lien-Leschziner Turbulence model in OpenFOAM - Revisiting wall functions in OpenFOAM
18:33 Case setup in OpenFOAM - The Lien-Leschziner Turbulence model
29:58 The Lien-Leschziner Turbulence model in OpenFOAM - Epsilon or epsilon modified?
33:15 Final remarks


This CFD cookie 🍪 is based on OpenFOAM 12, but the general guidelines and standard practices should work with any OpenFOAM version.

🤔 We also address the following question (CFD cookie 1):
Without reference results (experimental, analytical, etc.), how do I know that my turbulent Multiphysics simulations are correct?

You can find CFD cookie 1 at the following link: 👈
   • 🍪 CFD cookie - Basic turbulence modeling w...  


🤪 This cookie has been approved by the 🍪 cookie monster 👹.


Training material repository
https://drive.google.com/drive/folder...

Useful links:
https://turbmodels.larc.nasa.gov/
https://www.wolfdynamics.com/tools.ht...

Useful references:
B. E. Launder, D. B. Spalding. The Numerical Computation of Turbulent Flows. Computer Methods in Applied Mechanics and Engineering. 1974.
B. E. Launder, B. Sharma. Application of the energy dissipation model of turbulence to the calculation of flow near a spinning disc. Letters in Heat and Mass Transfer, Vol. 1(2), pp. 131-138. 1974.
W. Jones, B. Launder. The prediction of laminarization with a two-equation model of turbulence. Int. J. Heat Mass Transfer, vol. 15, pp. 301–314, 1972.
W. Jones, B. Launder. The calculation of low-Reynolds number phenomena with a two-equation model of turbulence. Int. J. Heat Mass Transfer, vol. 16, pp. 1119–1130, 1973.
C. Lam, K. Bremhorst. Modified Form of k-epsilon Model for Predicting Wall Turbulence. ASME, Journal of Fluids Engineering, Vol. 103, pp. 456-460, 1981.
D. Apsley. https://personalpages.manchester.ac.u.... Turbulence modelling in the STREAM code, 2002.
D. Apsley. https://personalpages.manchester.ac.u.... PhD Thesis
V. Patel, W. Rodi, G. Scheuerer. Turbulence Models for Near-Wall and Low Reynolds Number Flows: A Review. AIAA Journal VOL. 23, NO. 9. 1984.
F. Lien, M. Leschziner. A pressure-velocity solution strategy for compressible flow and its application to shock/boundary-layer interaction using second-moment turbulence closure. Journal of fluids engineering, 115(4), 717-725. (1993).



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