cavityClipped Compler problem

Maimouna · October 23, 2013, 11:25

Hi,

I got problem when I try icoFoam for cavittyClipped, I got this type of problem
************************************************** *******************************************
--> FOAM FATAL ERROR:
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 : 0.0041361
Specified mass inflow : 4.90392e-05
Specified mass outflow : 4.82345e-05
Adjustable mass outflow : 0

From function adjustPhi(surfaceScalarField& phi, const volVectorField& U,const volScalarField& p
in file cfdTools/general/adjustPhi/adjustPhi.C at line 118.

FOAM exiting
************************************************** *********************************************
I don't understand what does it mean.
I checked blockMesh and it was fine.

Best regards

Artur · October 24, 2013, 06:02

This problem usually occurs when there is a problem with the boundary conditions definition - basically there is a net flux that cannot be balanced and so continuity equation cannot be satisfied.

Did you follow the tutorial to the letter? Are you sure the movingWall patch was not assigned a velocity component that "pumps" some fluid into your domain? Are all the stationary walls assigned a fixedValue (0 0 0) BC?

Best wishes,

A

October 23, 2013, 11:25	cavityClipped Compler problem	#1
Maimouna Senior Member ok Join Date: Oct 2013 Posts: 346 Rep Power: 13	Hi, I got problem when I try icoFoam for cavittyClipped, I got this type of problem ************************************************ *************************************** --> FOAM FATAL ERROR: 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 : 0.0041361 Specified mass inflow : 4.90392e-05 Specified mass outflow : 4.82345e-05 Adjustable mass outflow : 0 From function adjustPhi(surfaceScalarField& phi, const volVectorField& U,const volScalarField& p in file cfdTools/general/adjustPhi/adjustPhi.C at line 118. FOAM exiting ********************************************** ******************************************* I don't understand what does it mean. I checked blockMesh and it was fine. Best regards

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October 24, 2013, 06:02		#2
Artur Senior Member Artur Join Date: May 2013 Location: Southampton, UK Posts: 372 Rep Power: 19	This problem usually occurs when there is a problem with the boundary conditions definition - basically there is a net flux that cannot be balanced and so continuity equation cannot be satisfied. Did you follow the tutorial to the letter? Are you sure the movingWall patch was not assigned a velocity component that "pumps" some fluid into your domain? Are all the stationary walls assigned a fixedValue (0 0 0) BC? Best wishes, A