

Continuity error cannot be removed by adjusting the outflow.
Hi all,
I am a new OpenFOAM user. Now I am trying to simulate a case relating heat transfer. I choose buoyantsimplefoam for my case. I think all is ok except defining the pressure boundary conditions. Here are the velocity and pressure boundary conditions for my case. Is there any problem with defining pressure relating to the above velocity boundary conditions? Thanks in advance.
When I simulate my case I face the continuity error like that
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 : 4.18896e-05
Specified mass inflow : 0.00269453
Specified mass outflow : 0
Adjustable mass outflow : 0
U/Velocity
dimensions [0 1 -1 0 0 0 0];
internalField uniform (0 0 0);
boundaryField
{
cold
{
type fixedValue;
value uniform (0 0 0);
}
hot
{
type fixedValue;
value uniform (0 0 0);
}
top
{
type fixedValue;
value uniform (0 0 0);
}
bottom
{
type zeroGradient;//fixedValue;
//value uniform (0 0 0);
}
front
{
type fixedValue;
value uniform (0 0 0);
}
back
{
type fixedValue;
value uniform (0 0 0);
}
Jet
{
type fixedValue;
value uniform (0 -0.1 0);
}
}
pressure-p
dimensions [1 -1 -2 0 0 0 0];
internalField uniform 1e5;
boundaryField
{
cold
{
type calculated;//zeroGradient;
value $internalField;
}
hot
{
type calculated;//zeroGradient;
value $internalField;
}
top
{
type calculated;//zeroGradient;
value $internalField;
}
bottom
{
type fixedValue;
value uniform 1e5;
}
front
{
type calculated;//zeroGradient;
value $internalField;
}
back
{
type calculated;//zeroGradient;
value $internalField;
}
Jet
{
type zeroGradient;
// value uniform 1e5;
}
}
Dynamic pressure-pgh
dimensions [1 -1 -2 0 0 0 0];
internalField uniform 1e5;
boundaryField
{
cold
{
type fixedFluxPressure;
value uniform 1e5;
}
hot
{
type fixedFluxPressure;
value uniform 1e5;
}
top
{
type fixedFluxPressure;
value uniform 1e5;
}
bottom
{
type fixedFluxPressure;
value uniform 1e5;
}
front
{
type fixedFluxPressure;
value uniform 1e5;
}
back
{
type fixedFluxPressure;
value uniform 1e5;
}
Jet
{
type zeroGradient;
//value uniform 1e5;
}
}
OpenFOAM


Hi,
Can you please share the case directory.
20-09-18, 5:07 a.m. razon131211
20-09-18, 11:46 a.m. razon131211
20-09-18, 7:02 p.m. sathish
21-09-18, 5:21 a.m. razon131211
24-09-18, 5:02 a.m. razon131211
24-09-18, 11:34 a.m. sathish
24-09-18, 12:07 p.m. razon131211
24-09-18, 12:16 p.m. razon131211
24-09-18, 12:32 p.m. razon131211
24-09-18, 2:59 p.m. sathish
25-09-18, 7 a.m. razon131211
26-09-18, 9:49 a.m. razon131211
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