CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Volume fractions in muliphase model

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   December 5, 2008, 05:36
Default Volume fractions in muliphase model
Posts: n/a

I am doing a simulation of cavitating flow. I use the pressure based, mixture model with the implemented cavitation model (really just one option of solver if using the cavitation model).

The problem thus contains 1.mixture level 2.water (also some non condensable gases defined in the cavitation model) 3.vapor

Now i want to implement a UDF for defining my own BC.

For this i need the speed of sound of the mixture. i could not access this variable in my UDF C_C2(c,t_mixture) gives the value 0. Anyone has experience with this?

to work around this i need to calculate the speed of sound myself. But for this i need each phase volume fraction. Now, i tried C_VOF(c,t_phase_i) does not give the volume fractions. Does anyone have some advice on how to access them?

all suggestions and thoughts are welcome

  Reply With Quote

Old   August 31, 2009, 07:58
New Member
asif nazir
Join Date: Aug 2009
Posts: 3
Rep Power: 10
asifnazir is on a distinguished road
i have also same kind of problem if u have find the solution then plz also inform me about it.specially the problem of finding the volume fraction
asifnazir is offline   Reply With Quote

Old   May 11, 2015, 07:20
New Member
Join Date: Jan 2013
Posts: 13
Rep Power: 6
fedefrance is on a distinguished road
I have the same problem. Did you find a solution?
fedefrance is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Nonphysical volume fractions at multiphase inlet sylvester OpenFOAM Running, Solving & CFD 4 July 1, 2009 10:52
volume fractions in homogeneous flow model? Matthias Rohner CFX 1 August 26, 2007 18:42
vector plot in muliphase? Tasuio CFX 2 September 29, 2002 07:17
Mole fractions from mass fractions? Keith Siemens 5 September 27, 2002 05:39
Higher order for phase volume fractions? George Bergantz CFX 2 December 11, 2000 12:55

All times are GMT -4. The time now is 02:13.