# Heat transfer coefficient

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 March 26, 2012, 10:58 Heat transfer coefficient #1 New Member   Join Date: Feb 2012 Posts: 3 Rep Power: 6 Hello to all experts and non-experts here in the forum. I'am new to OpenFOAM (did some SimpleFoam simulations of a rotorblade), but it's the first time i am dealing with heat transfer. My questionis: Is there a way to calculate the heat transfer coefficient in OpenFAOM? I searched not only this forum. The only thread i found matching this question is from the year 2005 and OpenFOAM 1.5 and there was no solution found that time. Now we have 2012 and OpenFOAM 2.1 and i think there was alot of development in OpenFOAM, so i thought perhaps there is a simple or not so simple way of calculating the heat transfer coefficent. My case is really simple it's a stream in a pipe. lets say the pipewall is 500K and the inletstream is 200K. And i want the local heat transfer coefficient. Is there any application or function to calculate the heat transfer coefficient? With kind Regards Viktor

 March 30, 2012, 05:43 Htc #2 New Member   Learner Join Date: Nov 2011 Location: Ingolstadt Posts: 27 Rep Power: 6 Hallo, I also have exactly the same situation. From forums, I understand that buoyantBoussinnesqSimpleFoam solver can be used for heat transfer. But for HTC, I think you need to first calculate the wallHeatFlux from the utility below (not sure if it will work for the latest versions). http://openfoamwiki.net/index.php/Contrib_wallHeatFlux The utility is obviously present in OF2.0.1 but I get an error when I try to use it. I am not sure what I can do about it. Time = 0 Selecting thermodynamics package hsPsiThermo>>>> --> FOAM FATAL ERROR: Attempt to return primitive entry ITstream : /localhome/bellurramesh/Thesis/ANalytical/test/constant/thermophysicalProperties::mixture, line 19, IOstream: Version 2.0, format ASCII, line 0, OPENED, GOOD primitiveEntry 'mixture' comprises on line 19 the word 'air' on line 19 the label 1 on line 19 the doubleScalar 28.9 on line 19 the label 1007 on line 19 the label 0 on line 19 the doubleScalar 1.84e-05 on line 19 the doubleScalar 0.7 as a sub-dictionary From function const dictionary& primitiveEntry::dict() const in file db/dictionary/primitiveEntry/primitiveEntry.C at line 159. FOAM aborting #0 Foam::error:rintStack(Foam::Ostream&) in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so" #1 Foam::error::abort() in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so" #2 Foam:rimitiveEntry::dict() const in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libOpenFOAM.so" #3 Foam:ureMixture > > >:ureMixture(Foam::dictionary const&, Foam::fvMesh const&) in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so" #4 Foam::hsPsiThermo > > > >::hsPsiThermo(Foam::fvMesh const&) in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so" #5 Foam::basicPsiThermo::addfvMeshConstructorToTable< Foam::hsPsiThermo > > > > >::New(Foam::fvMesh const&) in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so" #6 Foam::basicPsiThermo::New(Foam::fvMesh const&) in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so" #7 Foam::regIOobject::writeObject(Foam::IOstream::str eamFormat, Foam::IOstream::versionNumber, Foam::IOstream::compressionType) const in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/bin/wallHeatFlux" #8 __libc_start_main in "/lib64/libc.so.6" #9 Foam::regIOobject::writeObject(Foam::IOstream::str eamFormat, Foam::IOstream::versionNumber, Foam::IOstream::compressionType) const in "/opt/openfoam/OpenFOAM-2.0.1/platforms/linux64GccDPOpt/bin/wallHeatFlux" Abbruch Well if I succeed, I will post back and expect the same from you.

 April 3, 2012, 03:07 #3 New Member   Join Date: Feb 2012 Posts: 3 Rep Power: 6 Thanks for your answer! I will report when i succeed or when i make some progress in calculating the htc! kind regards Viktor

 November 25, 2013, 06:54 error with temp #4 New Member   david mckelvey Join Date: Nov 2013 Posts: 14 Rep Power: 4 hi raghu tejaswi I was wondering if you found out why you got the error you posted above, if so what does it mean? I have seen a similar error myself and struggling to find an answer. I'm aware this is an old thread, I was hoping you would remember. regards dmck

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