force function not working in OF 1.6

franzisko · August 4, 2009, 12:31

Hi,
I want to calculate forces, and then lift and drag with OF 1.6. I want to run using icoFoam for now. I start inserting

functions
(
forces
{
type forces;
functionObjectLibs ("libforces.so"); //Lib to load -> dylib on Mac and so on Linux
patches (sfera_Sphere); //Name of patche to integrate forces
rhoInf 1.0; //Reference density for fluid - can be changed later ...
//CofR (0 0 0); //Origin for moment calculations
}
);

in my system/controlDict file but it gives me this error:
keyword outputControl is undefined in dictionary "::functions::forces"

file: ::functions::forces from line 54 to line 57.

From function dictionary::lookupEntry(const word&, bool, bool) const
in file db/dictionary/dictionary.C at line 388.

FOAM exiting

can anybody help me?
thanks, Francesco

podallaire · August 4, 2009, 12:36

try to add those in your controlDict :

outputControl outputTime;
outputInterval 1;

franzisko · August 4, 2009, 12:54

Hi,
Thank you very much,
It seems to work good,
I hope to study better the code in the next...

Francesco

podallaire · August 4, 2009, 15:24

... maybe "outputControl timeStep;" would be more appropriate for what you are doing

Good luck

PO

August 4, 2009, 12:31	force function not working in OF 1.6	#1
franzisko New Member Francesco Join Date: Jul 2009 Posts: 13 Rep Power: 17	Hi, I want to calculate forces, and then lift and drag with OF 1.6. I want to run using icoFoam for now. I start inserting functions ( forces { type forces; functionObjectLibs ("libforces.so"); //Lib to load -> dylib on Mac and so on Linux patches (sfera_Sphere); //Name of patche to integrate forces rhoInf 1.0; //Reference density for fluid - can be changed later ... //CofR (0 0 0); //Origin for moment calculations } ); in my system/controlDict file but it gives me this error: keyword outputControl is undefined in dictionary "::functions::forces" file: ::functions::forces from line 54 to line 57. From function dictionary::lookupEntry(const word&, bool, bool) const in file db/dictionary/dictionary.C at line 388. FOAM exiting can anybody help me? thanks, Francesco

August 4, 2009, 12:54	thanks	#3
franzisko New Member Francesco Join Date: Jul 2009 Posts: 13 Rep Power: 17	Hi, Thank you very much, It seems to work good, I hope to study better the code in the next... Francesco

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August 4, 2009, 12:36		#2
podallaire Senior Member Pierre-Olivier Dallaire Join Date: Mar 2009 Location: Montreal, Quebec, Canada Posts: 192 Rep Power: 17	try to add those in your controlDict : outputControl outputTime; outputInterval 1;

August 4, 2009, 15:24		#4
podallaire Senior Member Pierre-Olivier Dallaire Join Date: Mar 2009 Location: Montreal, Quebec, Canada Posts: 192 Rep Power: 17	... maybe "outputControl timeStep;" would be more appropriate for what you are doing Good luck PO