[xinsui178]

Hey guys

I am very new to openFoam. When i am dealing with a heat transfer problem by using bouyantBoussinesqSimpleFoam solver, I have been facing this continuity error:

Time = 9

DILUPBiCG: Solving for Ux, Initial residual = 0.0885082, Final residual = 0.000499796, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.0950988, Final residual = 0.000374206, No Iterations 1
DILUPBiCG: Solving for Uz, Initial residual = 0.0804916, Final residual = 0.000396186, No Iterations 1
DILUPBiCG: Solving for T, Initial residual = 0.00228062, Final residual = 0.000160895, No Iterations 1
[3]
[3]
[3] --> FOAM FATAL ERROR:
[3] 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 : 3.57479
Specified mass inflow : 0.0281187
Specified mass outflow : 0
Adjustable mass outflow : 2.27509e-19
[3]
[3]
[3] From function adjustPhi(surfaceScalarField&, const volVectorField&,volScalarField&)
[3] in file cfdTools/general/adjustPhi/adjustPhi.C at line 114.
[3]
FOAM parallel run exiting

....
I tried the potentialFoam but again I had continuity error as well.

GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
GAMG: Solving for Phi, Initial residual = 5.91752e-07, Final residual = 5.91752e-07, No Iterations 0
Continuity error = 0.0634313
Interpolated velocity error = 0.00215528
ExecutionTime = 4 s ClockTime = 5 s



Can anyone who solved the kind of problem give me any clue about it? I had two inlet with two different temperatures and velocities and my setups are as below:

U:
boundaryField
{
inlet1
{
type fixedValue;
value uniform (46 0 0);
}
inlet2
{
type fixedValue;
value uniform (0 1.89 0);
}
outlet
{
type zeroGradient;
}
symmetric1
{
type slip;
}
symmetric2
{
type slip;
}
blade
{
type fixedValue;
value uniform (0 0 0);
}
}
P:
blade
{
type zeroGradient;
}

outlet
{
type fixedValue;
value uniform 0; //pascals divided by the density (equiv 1 bar)
}

inlet1
{
type zeroGradient;
}
inlet2
{
type zeroGradient;
}
symmetric1
{
type slip;
}
symmetric2
{
type slip;
}

}
T
boundaryField
{

blade
{
type zeroGradient;
}

outlet
{
type zeroGradient;//????
}

inlet1
{
type fixedValue;
value uniform 540;
}
inlet2
{
type fixedValue;
value uniform 300;
}
symmetric1
{
type slip;
}
symmetric2
{
type slip;
}
}

[ketanganatra0@yahoo.com]

Hi friend
I am also running with buoyantboussinesqsimplefoam and the same error I am also getting.
Can you please send me your O constant and system file to me???
You can see my case in following link.
http://https://drive.google.com/driv...095RUlEbXpMU28

Please reply as soon as possible it would be helpful for both of us.

[sturgeon]

I am new to OpenFOAM but I have been messing around in bBSF and had similar errors so possibly I can help.

Is that your file for p or p_gh?

(Also might help if you use the code tags to surround the text or upload whole case file)