[farzadmech]

Hello all
I know that interFOAM is a multiphase solver and it is usually used for bubbly flow, but I want to use it as a single phase solver which I think it must work exactly like pimpleFOAM, but it is very slow compare to pimpleFOAM. why?

The reason, I want to use interFOAM is that, I want to have p-rgh filed where pimpleFoam just gives p as an output.


Thanks,
Farzad

[farzadmech]

I checked the momentum equations(please see the attachment), and I am wondering if for single phase can I omit below red lines?

( mixture.surfaceTensionForce()
- ghf*fvc::snGrad(rho)
- fvc::snGrad(p_rgh)
) * mesh.magSf()

with these changes, it will be similar to pimpleFoam with p-rgh term but it must run much faster.

Thanks,
Farzad

Originally Posted by farzadmech

Hello all
I know that interFOAM is a multiphase solver and it is usually used for bubbly flow, but I want to use it as a single phase solver which I think it must work exactly like pimpleFOAM, but it is very slow compare to pimpleFOAM. why?

The reason, I want to use interFOAM is that, I want to have p-rgh filed where pimpleFoam just gives p as an output.


Thanks,
Farzad

[farzadmech]

Hello again
Actually, I just want to have "p-rgh" field and either both below methods are fine to me;
1) Using interFoam which is too slow(is there any way to make it faster for single phase simulation?)
2) Adding gravity to pimpleFoam

which one of the two methods are easier to implement?

Thanks,
Farzad