Bouyant BoussinesqSimpleFoam Help:
 

Hello,
I started using OpenFoam since 2 months. I am mainly using the buoyant BoussinesqSimpleFoam, I have the following questions may be some one can help me,

1) In the pressure file for example the boundary conditions for inlet, outlet and others has written as
type buoyantPressure;
rho rhok;
value 0;


I would like to know what is buoyant pressure, what is the rohk and why the value 0 is given.

2) When I run the simulation I had the following bug, may be some of you guys can help me in how to fix it.
Continuity error cannot be removed by adjusting the outflow.
Please check the velocity boundary conditions and/or run potentialFoam to initialise the outflow.
Total flux : 6.84617
Specified mass inflow : 0.358103
Specified mass outflow : 0.00523394
Adjustable mass outflow : 0


From function adjustPhi(surfaceScalarField& phi, const volVectorField& U,const volScalarField& p
in file cfdTools/general/adjustPhi/adjustPhi.C at line 116.

FOAM exiting


Maybe i know what can I do but it will be not good for my problem, actually the problem is related to the outlet because when i change the boundary condition and i give a fixed value (in Pressure) for example it works but the value of the velocity becomes high.

I hope you can help me.

Thank you in advance