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How can I use wallHeatFlux with modified icoFoam that has energy equation

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Old   October 29, 2014, 19:15
Default How can I use wallHeatFlux with modified icoFoam that has energy equation
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I added energy equation to icoFoam. now I want to use wallheatFlux utility for icoFoam.how can I do this?
im very appreciate for any help
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Old   October 30, 2014, 04:11
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You should add to your transportProperties file:

Code:
rho0             rho0 [1 -3 0 0 0 0 0] your rho;

Cp0             Cp0 [0 2 -2 -1 0 0 0] your cp;
This should work
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Old   October 30, 2014, 06:31
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im appreciate for your reply
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Old   October 30, 2014, 12:29
Default gradT
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now how I can calculate gradT
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Old   October 30, 2014, 17:05
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Code:
foamCalc grad T
Hope it works with foamCalc if not you will need to install foamCalcEx:

http://openfoamwiki.net/index.php/Contrib_foamCalcEx

Next time try searching in google please.
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Old   October 30, 2014, 20:23
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I downloaded foamCalcex and compile it according to command in http://openfoamwiki.net/index.php/Contrib_foamCalcEx
but when I write
Code:
 foamCalc grad T
I get this error:
Code:
sajad@sajad-pc:~/Desktop/heatedCavity2$ foamCalc grad T
Selecting calcType grad


--> FOAM FATAL ERROR: 
Unknown calcType type grad
Valid calcType selections are:

8
(
addSubtract
components
div
interpolate
mag
magGrad
magSqr
randomise
)



    From function calcType::New()
    in file calcType/calcTypeNew.C at line 53.

FOAM aborting

#0  Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#1  Foam::error::abort() in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#2  Foam::calcType::New(Foam::word const&) in "/opt/openfoam210/platforms/linuxGccDPOpt/lib/libfoamCalcFunctions.so"
#3  
 in "/opt/openfoam210/platforms/linuxGccDPOpt/bin/foamCalc"
#4  __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"
#5  
 in "/opt/openfoam210/platforms/linuxGccDPOpt/bin/foamCalc"
Aborted
sajad@sajad-pc:~/Desktop/heatedCavity2$ ^C
why it doesnt compile grade?
tnx for your replies

Last edited by wyldckat; November 1, 2014 at 15:40. Reason: Added [CODE][/CODE]
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Old   October 31, 2014, 09:17
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If you downloaded and installed foamCalcEx shouldn´t you use:

Code:
foamCalcEx grad T
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Old   October 31, 2014, 13:43
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tnx for your reply
I calculated gradT and wallHeatflux in wall in my case.now I want to calculate Nusselt Number.I know:
Nu=(q*L)/(gradT*k)
I just should do a fraction.how can I do it for all feild in order to calculate Nusselt number?
I'm appreciate for any help.
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Old   October 31, 2014, 16:15
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You can do that with the paraView calculator.
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Old   October 31, 2014, 18:45
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i'm appreciate for your helps.
you are right but I want calculate Nusselt Number just around the block.but in paraview calculater it calculate all field Nusselt number while the Nusselt is meaning just around the block.I mean I just want the Nusselt Number of cells around the block.
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Old   November 1, 2014, 03:42
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Just use Plot Over Line and extract the data over a patch.

You can also load only the desired patch in paraFoam and calculate the Nusselt number inside the patch
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