Bug in twoPhaseEulerFoam wallfunctions

alberto · February 9, 2007, 13:43

There's a bug in the implementation of wall-functions implemented in twoPhaseEulerFoam.

In wallFunctions.H, the dissipation epsilon is not set to zero as the production (line 20) and then it's used with a += operator (line 52).

The correct implementation is provided in bubbleFoam:

~/OpenFOAM/OpenFOAM-1.3/applications/solvers/multiphase/bubbleFoam/wallFunctions .H

This bug was reported to me by David Huckaby @ NETL/DOE. Thank you David.

Alberto

david_h · February 9, 2007, 14:15

All the credit should go to my colleague Sofiane Benyahia.

While your in looking at this routine you might also check the (yPlus > 11.6) statement. The value 11.6 might not be consistent with the values of kappa and E. The single phase turbulence models include a function to calculate this.

Dave

February 9, 2007, 13:43	There's a bug in the implement	#1
alberto Senior Member Alberto Passalacqua Join Date: Mar 2009 Location: Ames, Iowa, United States Posts: 1,912 Rep Power: 36	There's a bug in the implementation of wall-functions implemented in twoPhaseEulerFoam. In wallFunctions.H, the dissipation epsilon is not set to zero as the production (line 20) and then it's used with a += operator (line 52). The correct implementation is provided in bubbleFoam: ~/OpenFOAM/OpenFOAM-1.3/applications/solvers/multiphase/bubbleFoam/wallFunctions .H This bug was reported to me by David Huckaby @ NETL/DOE. Thank you David. Alberto __________________ Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using.

February 9, 2007, 14:15	All the credit should go to my	#2
david_h Member E. David Huckaby Join Date: Mar 2009 Posts: 57 Rep Power: 17	All the credit should go to my colleague Sofiane Benyahia. While your in looking at this routine you might also check the (yPlus > 11.6) statement. The value 11.6 might not be consistent with the values of kappa and E. The single phase turbulence models include a function to calculate this. Dave

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