PotentialFoam Problems...

thibautsimon1 · January 24, 2012, 20:09

Hi all,
I'm doing a study on a submarine in deep water,
but I have a problem when I star with doing a potentialFoam -writep:
--> FOAM FATAL ERROR:
No valid model for viscous stress calculation.

From function forces::devRhoReff()
in file forces/forces.C at line 113.

FOAM exiting

Is someone have an idea of where it's coming from?

Thanks a lot!!

garrison · April 17, 2012, 08:35

Maybe it's too late for you..
.. it should because of the "force" function in your controlDict, it will use viscous stress to calculate the force..
so just commend it off when using potentialFoam..

rcastilla · June 13, 2014, 05:58

potentialFoam has an option -noFunctionObjects that overrides the function subdictionary of controlDict

Antony_P · November 23, 2015, 11:40

Hello everyone ,

Please let me know how to calculate the total pressure field (= static p + dynamic p) in case of potentialFoam.
i used potentialFoam -writep.

i have a doubt if p is actually p or something else.

Thanks in Advance,
antony

January 24, 2012, 20:09	PotentialFoam Problems...	#1
thibautsimon1 New Member Thibaut SIMON Join Date: Jan 2012 Posts: 5 Rep Power: 14	Hi all, I'm doing a study on a submarine in deep water, but I have a problem when I star with doing a potentialFoam -writep: --> FOAM FATAL ERROR: No valid model for viscous stress calculation. From function forces::devRhoReff() in file forces/forces.C at line 113. FOAM exiting Is someone have an idea of where it's coming from? Thanks a lot!!

June 13, 2014, 05:58		#3
rcastilla Senior Member Robert Castilla Join Date: Apr 2009 Location: Spain Posts: 110 Rep Power: 17	potentialFoam has an option -noFunctionObjects that overrides the function subdictionary of controlDict macRC likes this.

November 23, 2015, 11:40	total pressure	#4
Antony_P New Member Antony Premkumar Join Date: Jul 2015 Posts: 19 Rep Power: 11	Hello everyone , Please let me know how to calculate the total pressure field (= static p + dynamic p) in case of potentialFoam. i used potentialFoam -writep. i have a doubt if p is actually p or something else. Thanks in Advance, antony

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April 17, 2012, 08:35		#2
garrison New Member Garrison, Liang Join Date: Feb 2012 Posts: 15 Rep Power: 14	Maybe it's too late for you.. .. it should because of the "force" function in your controlDict, it will use viscous stress to calculate the force.. so just commend it off when using potentialFoam..