Velocity boundary condition problem related

dmoroian · October 13, 2006, 09:23

Hello again,
I have a case that runs well using the conjugateFoam solver. Though, if I try to set an inflow velocity boundary condition of type pressureVelocity, I get the following error:

Starting time loop

Max Courant Number = 0.004

Time = 0.002
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0

--> FOAM FATAL ERROR : gradientInternalCoeffs cannot be called for a defaultFvPatchField.
(Actual type pressureVelocity)
You are probably trying to solve for a field with a default boundary conditions.

From function defaultFvPatchField<type>::gradientInternalCoeffs( ) const
in file fields/fvPatchFields/basicFvPatchFields/default/defaultFvPatchField.C at line 421.

FOAM exiting

It works very well with type fixedValue. Anyone can tell me what is wrong?

Dragos

panara · October 13, 2006, 09:35

Can you explain more in detail your case?
geometry, BC, etc..

Daniele

dmoroian · October 13, 2006, 10:03

I have an anular cylidrical domain (grey) closed at one side and opened at the other. It should resemble with a mug, a cup or a bottle. This is the solid region.
The fluid region is represented by another inner cylinder. Both the inlet (green surface) and the outlet (blue surface) are located at the opening.

Though I don't think the geometry influences the error, since I have tried the same solver on other cases and behaves similarly.

Dragos

dmoroian · October 16, 2006, 08:46

I found the problem: the type is pressureInletVelocity not pressureVelocity. It was in front of my eyes all the time.
I found this by searching all the libraries in OpenFOAM

Dragos

October 13, 2006, 09:23	Hello again, I have a case th	#1
dmoroian Senior Member Dragos Join Date: Mar 2009 Posts: 648 Rep Power: 20	Hello again, I have a case that runs well using the conjugateFoam solver. Though, if I try to set an inflow velocity boundary condition of type pressureVelocity, I get the following error: Starting time loop Max Courant Number = 0.004 Time = 0.002 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 --> FOAM FATAL ERROR : gradientInternalCoeffs cannot be called for a defaultFvPatchField. (Actual type pressureVelocity) You are probably trying to solve for a field with a default boundary conditions. From function defaultFvPatchField<type>::gradientInternalCoeffs( ) const in file fields/fvPatchFields/basicFvPatchFields/default/defaultFvPatchField.C at line 421. FOAM exiting It works very well with type fixedValue. Anyone can tell me what is wrong? Dragos

October 13, 2006, 09:35	Can you explain more in detail	#2
panara Senior Member Daniele Panara Join Date: Mar 2009 Posts: 101 Rep Power: 17	Can you explain more in detail your case? geometry, BC, etc.. Daniele

October 13, 2006, 10:03	I have an anular cylidrical do	#3
dmoroian Senior Member Dragos Join Date: Mar 2009 Posts: 648 Rep Power: 20	I have an anular cylidrical domain (grey) closed at one side and opened at the other. It should resemble with a mug, a cup or a bottle. This is the solid region. The fluid region is represented by another inner cylinder. Both the inlet (green surface) and the outlet (blue surface) are located at the opening. Though I don't think the geometry influences the error, since I have tried the same solver on other cases and behaves similarly. Dragos

October 16, 2006, 08:46	I found the problem: the type	#4
dmoroian Senior Member Dragos Join Date: Mar 2009 Posts: 648 Rep Power: 20	I found the problem: the type is pressureInletVelocity not pressureVelocity. It was in front of my eyes all the time. I found this by searching all the libraries in OpenFOAM Dragos

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