Question of properties in two phase solver

mmjhuang · February 27, 2009, 06:08

In the $HOME/run/tutorials/twoPhaseEulerFoam/bed/constant, the dimension of phi is given as [0 0 0 0 0 0 0]. So it should be a dimensionless parameter. But in the OpenFOAM Guide, it is said phi is the flux, which equals density times velocity, rho*U, so the unit should be kg/s.m^2. Thus, i guess the two phi are different. What is the physical meaning of the first one?

Secondly, there are three parameters i do not understnad them well. They are eta, p and Fr. which are in $HOME/run/tutorials/twoPhaseEulerFoam/bed/constant. In which model they are used?

Lastly, what's the meaning of preAlphaExp, expMax and g0 in the file $HOME/run/tutorials/twoPhaseEulerFoam/bed/constant/ppProperties?

mmjhuang · March 4, 2009, 03:48

Could anyone tell me the role of ppProperties in the twoPhaseEulerFoam solver. What are the physical meanings of preAlphaExp, expMax and g0?
Farthermore, what is the usage of filterProperties?

sharonyue · October 29, 2012, 23:56

Quote:

Originally Posted by mmjhuang

Could anyone tell me the role of ppProperties in the twoPhaseEulerFoam solver. What are the physical meanings of preAlphaExp, expMax and g0?
Farthermore, what is the usage of filterProperties?

hi Jun Huang

did u handle this problem?

February 27, 2009, 06:08	Question of properties in two phase solver	#1
mmjhuang New Member Jun Huang Join Date: Mar 2009 Posts: 6 Rep Power: 17	In the $HOME/run/tutorials/twoPhaseEulerFoam/bed/constant, the dimension of phi is given as [0 0 0 0 0 0 0]. So it should be a dimensionless parameter. But in the OpenFOAM Guide, it is said phi is the flux, which equals density times velocity, rho*U, so the unit should be kg/s.m^2. Thus, i guess the two phi are different. What is the physical meaning of the first one? Secondly, there are three parameters i do not understnad them well. They are eta, p and Fr. which are in $HOME/run/tutorials/twoPhaseEulerFoam/bed/constant. In which model they are used? Lastly, what's the meaning of preAlphaExp, expMax and g0 in the file $HOME/run/tutorials/twoPhaseEulerFoam/bed/constant/ppProperties?

March 4, 2009, 03:48	Could anyone tell me the role	#2
mmjhuang New Member Jun Huang Join Date: Mar 2009 Posts: 6 Rep Power: 17	Could anyone tell me the role of ppProperties in the twoPhaseEulerFoam solver. What are the physical meanings of preAlphaExp, expMax and g0? Farthermore, what is the usage of filterProperties?

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