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October 26, 2010, 14:15 |
RNG-k-epsilon with realisable contraint
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#1 |
Senior Member
Claus Meister
Join Date: Aug 2009
Location: Wiesbaden, Germany
Posts: 241
Rep Power: 17 |
Hello Foamers!
Does anybody know if the RNG-k-e model has a realisable constraint? If not, then I am wondering if it even need one, i.e. are there a other properties which makes the need for readability redundant? Cheers in advance |
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October 27, 2010, 12:04 |
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#2 | |
Senior Member
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20 |
Quote:
- P. A. Durbin, "On the k-e stagnation point anomaly", Int. J. Heat and Fluid Flow 17: 89-90, 1996. - Tsan-Hsing Shih et al., "A new k-e eddy viscosity model for high Reynolds number turbulent flows", Computers Fluids Vol 24, No 3, pp 227-238, 1995. - C. G. Speziale and S. Thangam, "Analysis of an RNG turbulence model for separated flows", Int. J. Engng Sci. Vol 30, No 10, pp 1379-1388, 1992. - V. Yakhot et al., "Development of turbulence models for shear flows by a double expansion technique", Phys. Fluids A 4 (7), July 1992. Regards V. |
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October 27, 2010, 13:16 |
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#3 |
Senior Member
Claus Meister
Join Date: Aug 2009
Location: Wiesbaden, Germany
Posts: 241
Rep Power: 17 |
The thing is, that I need to know if it is better to have a realizable constraint in the RNG model or not. Because, I computed a simulation which aborted due to a stagnation point. I changed to realisableKE to pass the critical point. Afterward, I changed back to RNG and the simulation went through. This is not a nice solution, but i worked. Therefore, I am interesting to implement the realizable constraint in RNG model.
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October 27, 2010, 13:31 |
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#4 | |
Senior Member
Vesselin Krastev
Join Date: Jan 2010
Location: University of Tor Vergata, Rome
Posts: 368
Rep Power: 20 |
Quote:
Regards V. |
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