Hi, why you not to try to combine compressibleInterFoam solver and some heatTransfer solver? I will try it too.

hi at all!
at the moment i am doing some simulations of a flow through a piston valve. right now i achieved some good results with the simpleFoam solver including k-w-SST model for low velocities or volume rate respectively. but when the effect of cavitation sets in, my results don´t follow the measured ones. therefore I try to set up a simulation with a multi-phase-solver. I decided to use rasCavitatingFoam but I achieved just unphysical results. After I read that some more people have problems with this solver and a friedly guy showed me a comparison of solvers ( http://web.student.chalmers.se/group...PosterOFW5.pdf ) I thought I rather use interPhaseChangeFoam. Would you say this is a good decision? (1)
Unfortunately I wasn´t able to set up a case now because I always get errors.
I downloaded the dambreak case calculated with interPhaseChangeFoam but I am not exactly sure what I need to change besides BCs and values of nu and rho. Is there somethin else? (2)

at the inlet i define my velocity with fixedValue (0 0 -1.04), outlet has fixedValue with 476.2.
I heard that it would be good to use solutions from a converged calculation as starting values for the more complicated. But how can I do that? (3) After simpleFoam my resulting pressures are given in m^2/s^2 because of the density. interPhaseChangeFoam is compressilble and the pressure unit is Pa.


best wishes!

hi buddies
could you please correct me if im wrong

first in phaseChangeTwoPhaseMixture::vDotAlphal() there is following expression
volScalarField alphalCoeff = 1.0/rho1() - alpha1_*(1.0/rho1() - 1.0/rho2());

but the source term in gamma equation is mdot/rhoLiquid , so how the above code can be right ?

second : why the following expression has been added in pEqn.H :
- (vDotvP - vDotcP)*pSat + fvm::Sp(vDotvP - vDotcP, p)

mDotAlphal() and mDotP() In interphasechange
 

Hello OpenFoam users ,

I'mstudying on the Kunz model.we know in this model we have two term for mass dest and prod.(m+ and m-)

What mean mDotAlphal() and mDotP()In interphasechange?
What is the difference between these two??

Hi,
I am using InterPhaseChange solver to simulate cavitation in OF2.1x
Although by old versions (i.e. OF1.5) I can get good results, with this new version results are not good at all. Dose anybody else get similar conflicts?

ABE

Hi,

I am using InterPhaseChange solver to simulate cavitation in OF2.1x
Although by old versions (i.e. OF1.5) I can get good results, with this new version results are not good at all. Dose anybody else get similar conflicts?

ABE

Hi, thx for your reply. I am using interPhaseChange solver. But I can not get results in OF2.1 or 2.2 versions :(

Hi, I want to simulate LNG gasification in water. The temperature of LNG is -169 degrees, and the temperature of water is 25 degrees. Due to temperature difference, the LNG would be gasification. Could the interPhaseChangeFoam simulate this case?

can someone please answer this question?

I am also wondering about the vDot terms in phasechange solvers of OF. where do they come from? I have found the analytical explanation for gas/liquid interface. but does should it also be considered for melting/solidification?