a question about volume fraction
 

hello,evryone I have a question about volume fraction in multiphase flow problem.I want to add a user scalar in cfx4.4. when I defined the source term P of the scalar in user fortran,which is correct, Su=Su+P or Su=Su+P/VF? VF is the volume fraction of corresponding phase.

Re: a question about volume fraction
 

A scalar, such as a mass fraction, is added in as such. It will be added as mass/(mass of phase in cell). If you are adding a source which is on a volume basis, you will have to convert it using densities and volume fractions to get it to a mass basis.

Jeff