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Heat transfer coefficient as a function of T in externalWallHeatFluxTemperature |
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#1 |
New Member
Nikos
Join Date: Aug 2012
Location: Greece
Posts: 23
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Hi all. I am trying to calculate h (heat transfer coefficient) as a function of temperature in the externalWallHeatFluxTemperature boundary condition. I am trying the following expression (as proposed by the GPT), however, it does not work (as expected :-) ):
Code:
wall_hangoff { type externalWallHeatFluxTemperature; mode coefficient; Ta constant 298.15; h coded; code #{ const volScalarField& T = this->db().lookupObject<volScalarField>("T"); scalarField& h = this->refValue(); forAll(h, i) { scalar Ti = T[i]; // Example: h as a linear function of T h[i] = 1.0 + 0.01 * (Ti - 298.15); // Customize this function as needed } #}; emissivity 0.7; kappaMethod fluidThermo; value $internalField; } ln: ./lnInclude dep: codedPatchFunction1Template.C Ctoo: codedPatchFunction1Template.C T.boundaryField.wall_hangoff: In member function ‘virtual Foam::tmp<Foam::Field<double> > Foam::PatchFunction1Types::hPatchFunction1ScalarFi eld::value(Foam::scalar) const’: T.boundaryField.wall_hangoff:36:33: error: ‘const class Foam::PatchFunction1Types::hPatchFunction1ScalarFi eld’ has no member named ‘db’ T.boundaryField.wall_hangoff:36:65: error: expected primary-expression before ‘>’ token T.boundaryField.wall_hangoff:37:36: error: ‘const class Foam::PatchFunction1Types::hPatchFunction1ScalarFi eld’ has no member named ‘refValue’; did you mean ‘value’? T.boundaryField.wall_hangoff:45:1: warning: no return statement in function returning non-void [-Wreturn-type] make: *** [/opt/OpenFOAM/OpenFOAM-v2012/wmake/rules/General/transform:35: Make/linux64Gcc63DPInt32Opt/codedPatchFunction1Template.o] Error 1 [0] [0] [0] --> FOAM FATAL IO ERROR: (openfoam-2012) [0] Failed wmake "dynamicCode/h/platforms/linux64Gcc63DPInt32Opt/lib/libh_2489b12f7e3e1a05b832a09186ffb5a47d33b78f.so" [0] [0] [0] T.boundaryField.wall_hangoff at line 31 to 47. [0] [0] From void Foam::codedBase::createLibrary(Foam::dynamicCode&, const Foam::dynamicCodeContext&) const [0] in file db/dynamicLibrary/codedBase/codedBase.C at line 201. [0] FOAM parallel run exiting [0] Do you have any clue of how can I do it? My OpenFOAM version is v2012. I am using the chtMultiRegionSimpleFoam solver. Thanks in advance Nikos |
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#2 |
New Member
Yueyun Xi
Join Date: Nov 2022
Posts: 14
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Hi Nikos,
From your error message, the problem is you cannot access T field in this way. Code:
const volScalarField& T = this->db().lookupObject<volScalarField>("T"); Code:
wall_hangoff { type externalWallHeatFluxTemperature; mode coefficient; Ta constant 298.15; h #codeStream { codeInclude #{ #include "fvCFD.H" #}; codeOptions #{ -I$(LIB_SRC)/finiteVolume/lnInclude \ -I$(LIB_SRC)/meshTools/lnInclude #}; codeLibs #{ -lmeshTools \ -lfiniteVolume #}; code #{ const IOdictionary& d = static_cast<const IOdictionary&> ( dict.parent().parent() ); const fvMesh& mesh = refCast<const fvMesh>(d.db()); const volScalarField& T = mesh.lookupObject<volScalarField>("T"); scalarField& h = this->refValue(); forAll(h, i) { scalar Ti = T[i]; // Example: h as a linear function of T h[i] = 1.0 + 0.01 * (Ti - 298.15); // Customize this function as needed } #}; } emissivity 0.7; kappaMethod fluidThermo; value $internalField; } Yueyun |
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#3 |
New Member
Nikos
Join Date: Aug 2012
Location: Greece
Posts: 23
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Thanks a lot for your reply Yueyun!
Unfortunately it doesn't work.. The error now appears during 'DecomposePar': Using #codeStream at line 34 in file "/mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_air/T.boundaryField.wall_hangoff" Using #codeStream with "/mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_2eec51d933a52843410f549576af5ae20fb3 639f.so" Could not load "/mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_2eec51d933a52843410f549576af5ae20fb3 639f.so" /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_2eec51d933a52843410f549576af5ae20fb3 639f.so: cannot open shared object file: No such file or directory Creating new library in "dynamicCode/_2eec51d933a52843410f549576af5ae20fb3639f/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_2eec51d933a52843410f549576af5ae20fb3 639f.so" Invoking wmake libso /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/_2eec51d933a52843410f549576af5ae20fb3639f wmake libso /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/_2eec51d933a52843410f549576af5ae20fb3639f ln: ./lnInclude dep: codeStreamTemplate.C Ctoo: codeStreamTemplate.C /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_air/T.boundaryField.wall_hangoff.#codeStream: In function ‘void Foam::codeStream_2eec51d933a52843410f549576af5ae20 fb3639f(Foam::Ostream&, const Foam::dictionary&)’: /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_air/T.boundaryField.wall_hangoff.#codeStream:61:34: error: invalid use of ‘this’ in non-member function make: *** [/opt/OpenFOAM/OpenFOAM-v2012/wmake/rules/General/transform:35: Make/linux64Gcc63DPInt32Opt/codeStreamTemplate.o] Error 1 --> FOAM FATAL IO ERROR: (openfoam-2012) Failed wmake "dynamicCode/_2eec51d933a52843410f549576af5ae20fb3639f/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_2eec51d933a52843410f549576af5ae20fb3 639f.so" file: /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_air/T.boundaryField.wall_hangoff at line 31 to 33. From static void (* Foam::functionEntries::codeStream::getFunction(con st Foam::dictionary&, const Foam::dictionary&))(Foam::Ostream&, const Foam::dictionary&) in file db/dictionary/functionEntries/codeStream/codeStream.C at line 197. FOAM exiting |
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#4 |
New Member
Arunkl
Join Date: Jun 2024
Posts: 5
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HI i am trying to use a custom drag model for multiphase flow i can compile it using single core and it runs well but in multi core i have came with a warning
Code:
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time --> FOAM Warning : From function void* Foam::dlOpen(const Foam::fileName&, bool) in file POSIX.C at line 1247 dlopen error : /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libphaseSystem.so: undefined symbol: _ZN4Foam15saturationModel8typeNameE --> FOAM Warning : From function bool Foam::dlLibraryTable::open(const Foam::fileName&, bool) in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 106 could not load "libIshiiZuberModModel.so" Decomposing mesh region0 Reading "decomposeParDict" Create mesh Calculating distribution of cells Selecting decompositionMethod simple Finished decomposition in 0.06 s Calculating original mesh data Distributing cells to processors Distributing faces to processors Distributing points to processors Constructing processor meshes --> FOAM Warning : From function void* Foam::dlOpen(const Foam::fileName&, bool) in file POSIX.C at line 1247 dlopen error : /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libphaseSystem.so: undefined symbol: _ZN4Foam15saturationModel8typeNameE --> FOAM Warning : From function bool Foam::dlLibraryTable::open(const Foam::fileName&, bool) in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 106 could not load "libIshiiZuberModModel.so" Processor 0 Number of cells = 54000 Number of faces shared with processor 1 = 720 Number of processor patches = 1 Number of processor faces = 720 Number of boundary faces = 4320 --> FOAM Warning : From function void* Foam::dlOpen(const Foam::fileName&, bool) in file POSIX.C at line 1247 dlopen error : /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libphaseSystem.so: undefined symbol: _ZN4Foam15saturationModel8typeNameE --> FOAM Warning : From function bool Foam::dlLibraryTable::open(const Foam::fileName&, bool) in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 106 could not load "libIshiiZuberModModel.so" Processor 1 Number of cells = 54000 Number of faces shared with processor 0 = 720 Number of processor patches = 1 Number of processor faces = 720 Number of boundary faces = 4320 Number of processor faces = 720 Max number of cells = 54000 (0% above average 54000) Max number of processor patches = 1 (0% above average 1) Max number of faces between processors = 720 (0% above average 720) Time = 0 Processor 0: field transfer --> FOAM Warning : From function void* Foam::dlOpen(const Foam::fileName&, bool) in file POSIX.C at line 1247 dlopen error : /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libphaseSystem.so: undefined symbol: _ZN4Foam15saturationModel8typeNameE --> FOAM Warning : From function bool Foam::dlLibraryTable::open(const Foam::fileName&, bool) in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 106 could not load "libIshiiZuberModModel.so" Processor 1: field transfer --> FOAM Warning : From function void* Foam::dlOpen(const Foam::fileName&, bool) in file POSIX.C at line 1247 dlopen error : /opt/openfoam9/platforms/linux64GccDPInt32Opt/lib/libphaseSystem.so: undefined symbol: _ZN4Foam15saturationModel8typeNameE --> FOAM Warning : From function bool Foam::dlLibraryTable::open(const Foam::fileName&, bool) in file db/dynamicLibrary/dlLibraryTable/dlLibraryTable.C at line 106 could not load "libIshiiZuberModModel.so" End can anyone help me in this my openfoam version is 9 thanks in advance |
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#5 | |
New Member
Nikos
Join Date: Aug 2012
Location: Greece
Posts: 23
Rep Power: 14 ![]() |
Quote:
Hi arunkl! I suppose you replied in a wrong thread.. |
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#6 |
New Member
Nikos
Join Date: Aug 2012
Location: Greece
Posts: 23
Rep Power: 14 ![]() |
I think I have made some progress. I am using the following code for creating a custom function of h within externalWallHeatFluxTemperature boundary condition. Unfortunately, I cannot access the temperature at the boundary faces:
Code:
wall_hangoff { type externalWallHeatFluxTemperature; mode coefficient; Ta constant 298.15; h #codeStream { codeInclude #{ #include "fvCFD.H" #}; codeOptions #{ -I$(LIB_SRC)/finiteVolume/lnInclude \ -I$(LIB_SRC)/meshTools/lnInclude #}; codeLibs #{ -lmeshTools \ -lfiniteVolume #}; code #{ const IOdictionary& d = static_cast<const IOdictionary&> ( dict.parent().parent() ); // access current directory const fvMesh& mesh = refCast<const fvMesh>(d.db()); // access mesh database const label id = mesh.boundary().findPatchID("wall_hangoff"); // label id of patch const fvPatch& boundaryPatch = mesh.boundary()[id]; // access boundary mesh information using label id const vectorField& Cf = boundaryPatch.Cf(); // access coordinates of cells [Used for test purposes] const volScalarField& T = mesh.lookupObject<volScalarField>("T"); // access temperature field //const scalarField& Tb = T.boundaryField()[id]; // temperature at boundary faces [NOT WORKING] scalarField h(boundaryPatch.size(), 0); // initialise h field forAll(h, i) { //scalar Ti = Tb[i]; // temperature at face i scalar x = Cf[i].x(); // x coordinate of the faces i [Used for test purposes] scalar y = Cf[i].y(); // y coordinate of the faces i [Used for test purposes] //h[i] = 1.0 + 0.01 * (Ti - 298.15); h[i] = scalar (0.5 + x + y); // Used for test purposes } os << " nonuniform List<scalar> " << h; #}; } emissivity 0.7; thicknessLayers (0.0001); kappaLayers (45); kappaMethod solidThermo; value $internalField; } Using #codeStream at line 34 in file "/mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_mp/T.boundaryField.wall_hangoff" Using #codeStream with "/mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_62d25ae084a4cdeeccf3c013078048a256da 11ce.so" Could not load "/mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_62d25ae084a4cdeeccf3c013078048a256da 11ce.so" /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_62d25ae084a4cdeeccf3c013078048a256da 11ce.so: cannot open shared object file: No such file or directory Creating new library in "dynamicCode/_62d25ae084a4cdeeccf3c013078048a256da11ce/platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_62d25ae084a4cdeeccf3c013078048a256da 11ce.so" Invoking wmake libso /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/_62d25ae084a4cdeeccf3c013078048a256da11ce wmake libso /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/_62d25ae084a4cdeeccf3c013078048a256da11ce ln: ./lnInclude dep: codeStreamTemplate.C Ctoo: codeStreamTemplate.C /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_mp/T.boundaryField.wall_hangoff.#codeStream: In function ‘void Foam::codeStream_62d25ae084a4cdeeccf3c013078048a25 6da11ce(Foam::Ostream&, const Foam::dictionary&)’: /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/0/domain_mp/T.boundaryField.wall_hangoff.#codeStream:64:36: warning: unused variable ‘Tb’ [-Wunused-variable] ld: /mnt/d/openFOAM_chtMultiRegionSimpleFoam_mesh_convert/dynamicCode/_62d25ae084a4cdeeccf3c013078048a256da11ce/../platforms/linux64Gcc63DPInt32Opt/lib/libcodeStream_62d25ae084a4cdeeccf3c013078048a256da 11ce.so --> FOAM FATAL ERROR: (openfoam-2012) Cannot dereference nullptr at index 1 in range [0,7) From const T& Foam::UPtrList<T>: ![]() in file /opt/OpenFOAM/OpenFOAM-v2012/src/OpenFOAM/lnInclude/UPtrListI.H at line 218. FOAM aborting #0 Foam::error: ![]() #1 Foam::error::exitOrAbort(int, bool) at ??:? #2 codeStream_62d25ae084a4cdeeccf3c013078048a256da11c e at /opt/OpenFOAM/OpenFOAM-v2012/src/OpenFOAM/lnInclude/errorManip.H:92 #3 Foam::functionEntries::codeStream::evaluate(Foam:: dictionary const&, Foam::Istream&) at ??:? #4 Foam::functionEntries::codeStream::execute(Foam::d ictionary const&, Foam: ![]() #5 Foam::functionEntry::execute(Foam::word const&, Foam::dictionary const&, Foam: ![]() #6 Foam: ![]() #7 Foam: ![]() #8 Foam: ![]() #9 Foam: ![]() ![]() #10 Foam::entry::New(Foam::dictionary&, Foam::Istream&, Foam::entry::inputMode, int) at ??:? #11 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #12 Foam::dictionary::dictionary(Foam::fileName const&, Foam::dictionary const&, Foam::Istream&, bool) at ??:? #13 Foam::dictionaryEntry::dictionaryEntry(Foam::keyTy pe const&, Foam::dictionary const&, Foam::Istream&) at ??:? #14 Foam::entry::New(Foam::dictionary&, Foam::Istream&, Foam::entry::inputMode, int) at ??:? #15 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #16 Foam::dictionary::dictionary(Foam::fileName const&, Foam::dictionary const&, Foam::Istream&, bool) at ??:? #17 Foam::dictionaryEntry::dictionaryEntry(Foam::keyTy pe const&, Foam::dictionary const&, Foam::Istream&) at ??:? #18 Foam::entry::New(Foam::dictionary&, Foam::Istream&, Foam::entry::inputMode, int) at ??:? #19 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #20 Foam: ![]() #21 Foam::baseIOdictionary::readData(Foam::Istream&) at ??:? #22 Foam::fileOperations::uncollatedFileOperation::rea d(Foam::regIOobject&, bool, Foam::IOstreamOption::streamFormat, Foam::word const&) const at ??:? #23 Foam::regIOobject::readHeaderOk(Foam::IOstreamOpti on::streamFormat, Foam::word const&) at ??:? #24 Foam::localIOdictionary::localIOdictionary(Foam::I Oobject const&, Foam::word const&) at ??:? #25 Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>::readFields() at ??:? #26 Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh>::GeometricField(Foam::IOobject const&, Foam::fvMesh const&, bool) at ??:? #27 ? at ??:? #28 ? at ??:? #29 __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6 #30 ? at ??:? Aborted (core dumped) Do you think that I am on the right path? I would appreciate any advices. Is the boundary temperature expression wrong? Thanks a lot! |
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Tags |
custom function, heat flux, heat transfer coefficient, openfoam |
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