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Forum: Main CFD Forum

August 2, 2013, 16:42

Replies: 7

coupling vof with single phase flow and gravity term

Views: 1,879

Posted By alame005

My density varies it isn't constant. Is rho2 a...

My density varies it isn't constant. Is rho2 a reference density ?

The way I do it is I say rho(x) = rho1*c + (1-c)*rho2
where c = volume fraction, rho1 = rho_liquid and rho2 = rho_gas

The...

Forum: Main CFD Forum

August 2, 2013, 16:20

Replies: 7

coupling vof with single phase flow and gravity term

Views: 1,879

Posted By alame005

I had divided my equations by rho basically...

I had divided my equations by rho basically solving for the non-conservative form.

For the boundary condition at the interface, does it still apply if I don't have the surface stress applied yet? ...

Forum: Main CFD Forum

August 2, 2013, 15:26

Replies: 7

coupling vof with single phase flow and gravity term

Views: 1,879

Posted By alame005

Basically your predictor step looks like this for...

Basically your predictor step looks like this for single phase no gravity

u*-u = dt * ( nonlin_terms + visc terms)

what I did was just add gravity to that:

u*-u = dt * ( nonlin_terms + ...

Forum: Main CFD Forum

August 2, 2013, 14:46

Replies: 7

coupling vof with single phase flow and gravity term

Views: 1,879

Posted By alame005

coupling vof with single phase flow and gravity term

Hey everyone,
currently developing two phase flow solver. I have written a 2D navier stokes solver for a single phase flow and tested it. I also wrote a VOF-plic algorithm and tested that and it...

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