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February 14, 2017, 06:55 

#41 
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Must I define something in the controlDict?


February 14, 2017, 08:58 

#42 
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I changed the fvOptions a little bit and now have this error:
Code:
/**\  =========    \\ / F ield  OpenFOAM: The Open Source CFD Toolbox   \\ / O peration  Version: 4.1   \\ / A nd  Web: www.OpenFOAM.org   \\/ M anipulation   \**/ Build : 4.1 Exec : buoyantBoussinesqSimpleFoam Date : Feb 14 2017 Time : 13:51:56 Host : "cfdMEDION" PID : 13396 Case : /home/cfd/OpenFOAM/cfd4.1/run/elektronen nProcs : 1 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). fileModificationChecking : Monitoring runtime modified files using timeStampMaster allowSystemOperations : Allowing usersupplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create mesh for time = 0 SIMPLE: convergence criteria field p_rgh tolerance 0.01 field U tolerance 0.0001 field T tolerance 0.01 field G tolerance 1e06 field "(kepsilonomega)" tolerance 0.001 Reading thermophysical properties Reading field T Reading field p_rgh Reading field U Reading/calculating face flux field phi Selecting incompressible transport model Newtonian Creating turbulence model Selecting turbulence model type RAS Selecting RAS turbulence model kEpsilon kEpsilonCoeffs { Cmu 0.09; C1 1.44; C2 1.92; C3 0.33; sigmak 1; sigmaEps 1.3; } Reading field alphat Reading g Reading hRef Calculating field g.h No MRF models present Radiation model not active: radiationProperties not found Selecting radiationModel none Creating finite volume options from "constant/fvOptions" Selecting finite volume options model type scalarCodedSource Source: heatSource  selecting all cells  selected 17600 cell(s) with volume 1.8e10 > FOAM FATAL IO ERROR: keyword fields is undefined in dictionary "/home/cfd/OpenFOAM/cfd4.1/run/elektronen/constant/fvOptions.heatSource.scalarCodedSourceCoeffs" file: /home/cfd/OpenFOAM/cfd4.1/run/elektronen/constant/fvOptions.heatSource.scalarCodedSourceCoeffs from line 27 to line 88. From function const Foam::entry& Foam::dictionary::lookupEntry(const Foam::word&, bool, bool) const in file db/dictionary/dictionary.C at line 441. FOAM exiting Code:
heatSource { type scalarCodedSource; active true; scalarCodedSourceCoeffs { selectionMode all; fieldNames (T); name sourceTime; codeAddSup { scalarField& TSource = eqn.source(); const scalar power = 1000; const scalar Radius = 0.5; const scalar rho = 1000; const scalar Cp = 4.19; const scalar Uvol = 400; const scalar Iel = 1000; const scalar electrons = 10000; const scalar xCenter = 3; const scalar yCenter = 0.01; const scalar zCenter = 2; const List<point>& cf = p.Cf(); const scalar xCF = cf[c][0]; const scalar XF = xCenter  xCF; const scalar check+ = xCenter + Radius; const scalar check = xCenter  Radius; if ((xCF < check+) && (xCF > check)) { const scalar r2 = XF * XF; const scalar re2 = Radius * Radius; const scalar factor = r2/re2; const scalar pre = exp(factor); const scalar qfa_ [c] = power * exp; const scalar TzuF_ [c] = (1/(rho*Cp))*qfa } else { const scalar qfa_ [c] = 0; }; TSource = Tzuf; Pout << "***codeAddSup***" << endl; }; codeSetValue { Pout<< "**codeSetValue**" << endl; }; // Dummy entry. Make dependent on above to trigger recompilation code { $codeInclude $codeCorrect $codeAddSup $codeSetValue }; } sourceTimeCoeffs { // Dummy entry } } I don't use setFields or something like that, because I want to use all cells. Maybe somebody can help me. 

February 15, 2017, 05:23 

#43  
Senior Member

Hi,
This part explains what OpenFOAM is looking for: Quote:
Regards, Tom 

February 15, 2017, 05:33 

#44 
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Thanks for your reply tom.
I changed it in fields. Code:
heatSource { name sourceTime; //Nur der Name type scalarCodedSource; // ginge auch Vector active yes; scalarCodedSourceCoeffs { selectionMode all; //Alle Zellen werden ausgewählt fields (T); // In welches Feld er etwas hinzufügen soll /* Valid functionEntries are for codeCorrect: 8 inputMode codeStream include calc remove includeIfPresent includeEtc includeFunc */ codeCorrect { }; codeAddSup { scalarField& TSource = eqn.source(); const scalar power = 1000; const scalar Radius = 0.5; const scalar rho = 1000; const scalar Cp = 4.19; const scalar Uvol = 400; const scalar Iel = 1000; const scalar electrons = 10000; const scalar xCenter = 3; const scalar yCenter = 0.01; const scalar zCenter = 2; const List<point>& cf = p.Cf(); const scalar xCF = cf[c][0]; const scalar XF = xCenter  xCF; const scalar check+ = xCenter + Radius; const scalar check = xCenter  Radius; if ((xCF < check+) && (xCF > check)) { const scalar r2 = XF * XF; const scalar re2 = Radius * Radius; const scalar factor = r2/re2; const scalar pre = exp(factor); const scalar qfa_ [c] = power * exp; const scalar TzuF_ [c] = (1/(rho*Cp))*qfa } else { const scalar qfa_ [c] = 0; }; TSource = Tzuf; Pout << "***codeAddSup***" << endl; }; codeSetValue { Pout<< "**codeSetValue**" << endl; }; // Dummy entry. Make dependent on above to trigger recompilation code { $codeInclude $codeCorrect $codeAddSup $codeSetValue }; } sourceTimeCoeffs { // Dummy entry } } Code:
Selecting finite volume options model type scalarCodedSource Source: heatSource  selecting all cells  selected 17600 cell(s) with volume 1.8e10 > FOAM FATAL IO ERROR: Attempt to return dictionary entry as a primitive file: /home/cfd/OpenFOAM/cfd4.1/run/elektronen/constant/fvOptions.heatSource.scalarCodedSourceCoeffs.codeCorrect From function virtual Foam::ITstream& Foam::dictionaryEntry::stream() const in file db/dictionary/dictionaryEntry/dictionaryEntry.C at line 83. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::IOerror::abort() at ??:? #2 Foam::dictionaryEntry::stream() const at ??:? #3 Foam::fv::CodedSource<double>::read(Foam::dictionary const&) at ??:? #4 Foam::fv::option::adddictionaryConstructorToTable<Foam::fv::CodedSource<double> >::New(Foam::word const&, Foam::word const&, Foam::dictionary const&, Foam::fvMesh const&) at ??:? #5 Foam::fv::option::New(Foam::word const&, Foam::dictionary const&, Foam::fvMesh const&) at ??:? #6 Foam::fv::optionList::reset(Foam::dictionary const&) at ??:? #7 Foam::fv::optionList::optionList(Foam::fvMesh const&, Foam::dictionary const&) at ??:? #8 Foam::fv::options::options(Foam::fvMesh const&) at ??:? #9 Foam::fv::options::New(Foam::fvMesh const&) at ??:? #10 ? at ??:? #11 __libc_start_main in "/lib/x86_64linuxgnu/libc.so.6" #12 ? at ??:? Abgebrochen (Speicherabzug geschrieben) Code:
codeCorrect { # }; Code:
Radiation model not active: radiationProperties not found Selecting radiationModel none Creating finite volume options from "constant/fvOptions" > FOAM FATAL ERROR: Unknown functionEntry '' in "/home/cfd/OpenFOAM/cfd4.1/run/elektronen/constant/fvOptions" near line 46 Valid functionEntries are : 8 ( inputMode codeStream include calc remove includeIfPresent includeEtc includeFunc ) From function static bool Foam::functionEntry::execute(const Foam::word&, Foam::dictionary&, Foam::Istream&) in file db/dictionary/functionEntries/functionEntry/functionEntry.C at line 79. FOAM exiting Regards Chris 

February 15, 2017, 12:03 

#45 
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Hello all,
I hope somebody can help me with the scalarCodedSource. I tried many things, but it doesn't work and I can't figure out why. my fvOptions file: Code:
heatSource { name sourceTime; type scalarCodedSource; active yes; scalarCodedSourceCoeffs { selectionMode all; fields (T); codeCorrect #{ Pout << "***codeCorrect***" << endl; #}; codeAddSup #{ scalarField& TSource = eqn.source(); const scalar power = 1000; const scalar Radius = 0.5; const scalar rho = 1000; const scalar Cp = 4.19; const scalar Uvol = 400; const scalar Iel = 1000; const scalar electrons = 10000; const scalar xCenter = 3; const scalar yCenter = 0.01; const scalar zCenter = 2; const List<point>& cf = p.Cf(); const scalar xCF = cf[c][0]; const scalar XF = xCenter  xCF; const scalar check+ = xCenter + Radius; const scalar check = xCenter  Radius; if ((xCF < check+) && (xCF > check)) { const scalar r2 = XF * XF; const scalar re2 = Radius * Radius; const scalar factor = r2/re2; const scalar pre = exp(factor); const scalar qfa_ [c] = power * exp; const scalar TzuF_ [c] = (1/(rho*Cp))*qfa } else { const scalar qfa_ [c] = 0; }; TSource = Tzuf; Pout << "***codeAddSup***" << endl; #}; codeSetValue #{ Pout<< "**codeSetValue**" << endl; #}; // Dummy entry. Make dependent on above to trigger recompilation code { $codeInclude $codeCorrect $codeAddSup $codeSetValue }; } sourceTimeCoeffs { // Dummy entry } } // ************************************************************************* // Code:
Create time Create mesh for time = 0 SIMPLE: convergence criteria field p_rgh tolerance 0.01 field U tolerance 0.0001 field T tolerance 0.01 field G tolerance 1e06 field "(kepsilonomega)" tolerance 0.001 Reading thermophysical properties Reading field T Reading field p_rgh Reading field U Reading/calculating face flux field phi Selecting incompressible transport model Newtonian Creating turbulence model Selecting turbulence model type RAS Selecting RAS turbulence model kEpsilon kEpsilonCoeffs { Cmu 0.09; C1 1.44; C2 1.92; C3 0.33; sigmak 1; sigmaEps 1.3; } Reading field alphat Reading g Reading hRef Calculating field g.h No MRF models present Radiation model not active: radiationProperties not found Selecting radiationModel none Creating finite volume options from "constant/fvOptions" > FOAM FATAL ERROR: Attempt to return primitive entry ITstream : /home/cfd/OpenFOAM/cfd4.1/run/elektronen/constant/fvOptions.heatSource.scalarCodedSourceCoeffs.codeCorrect, line 31, IOstream: Version 2.0, format ASCII, line 0, OPENED, GOOD primitiveEntry 'codeCorrect' comprises on line 31 the verbatim string "\ Pout << \"***codeCorrect***\" << endl;\ \ " as a subdictionary From function virtual const Foam::dictionary& Foam::primitiveEntry::dict() const in file db/dictionary/primitiveEntry/primitiveEntry.C at line 189. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::primitiveEntry::dict() const at primitiveEntry.C:? #3 Foam::dictionary::substituteScopedKeyword(Foam::word const&) at ??:? #4 Foam::entry::New(Foam::dictionary&, Foam::Istream&) at ??:? #5 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #6 Foam::dictionary::dictionary(Foam::fileName const&, Foam::dictionary const&, Foam::Istream&) at ??:? #7 Foam::dictionaryEntry::dictionaryEntry(Foam::keyType const&, Foam::dictionary const&, Foam::Istream&) at ??:? #8 Foam::entry::New(Foam::dictionary&, Foam::Istream&) at ??:? #9 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #10 Foam::dictionary::dictionary(Foam::fileName const&, Foam::dictionary const&, Foam::Istream&) at ??:? #11 Foam::dictionaryEntry::dictionaryEntry(Foam::keyType const&, Foam::dictionary const&, Foam::Istream&) at ??:? #12 Foam::entry::New(Foam::dictionary&, Foam::Istream&) at ??:? #13 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #14 Foam::dictionary::dictionary(Foam::fileName const&, Foam::dictionary const&, Foam::Istream&) at ??:? #15 Foam::dictionaryEntry::dictionaryEntry(Foam::keyType const&, Foam::dictionary const&, Foam::Istream&) at ??:? #16 Foam::entry::New(Foam::dictionary&, Foam::Istream&) at ??:? #17 Foam::dictionary::read(Foam::Istream&, bool) at ??:? #18 Foam::operator>>(Foam::Istream&, Foam::dictionary&) at ??:? #19 Foam::IOdictionary::readFile(bool) at ??:? #20 Foam::IOdictionary::IOdictionary(Foam::IOobject const&) at ??:? #21 Foam::fv::options::options(Foam::fvMesh const&) at ??:? #22 Foam::fv::options::New(Foam::fvMesh const&) at ??:? #23 ? at ??:? #24 __libc_start_main in "/lib/x86_64linuxgnu/libc.so.6" #25 ? at ??:? Abgebrochen (Speicherabzug geschrieben) Thanks for xour help. Regards, Chris 

February 16, 2017, 02:51 

#46 
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Morning all,
i solved the problem with the "primitive entry". Maybe somebody can help me with the code. I need 3 zones in z. The first one should be one face of my mesh and for the other two there should be different values for each cell. Regards Chris 

February 18, 2017, 17:17 

#47 
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Hy all,
sorry to bother you, but I have a problem. I only want a zone for a heatSource. So I used topoSetDict and cellSet, but in ParaView the whole mesh is used. Here is my fvOptions: Code:
harmonic { name sourceTime; type scalarCodedSource; active true; selectionMode cellZone; cellZone heatSource; scalarCodedSourceCoeffs { fields (T); selectionMode cellZone; cellZone heatSource; codeInclude #{ #}; codeCorrect #{ Pout<< "**codeCorrect**" << endl; #}; codeAddSup #{ const Time& time = mesh().time(); const scalarField& V = mesh_.V(); const vectorField& C = mesh_.C(); scalarField& TSource = eqn.source(); forAll(C, i) { TSource += 1*V[i]; } Pout << "***codeAddSup***" << endl; #}; codeSetValue #{ Pout<< "**codeSetValue**" << endl; #}; // Dummy entry. Make dependent on above to trigger recompilation code #{ $codeInclude $codeCorrect $codeAddSup $codeSetValue #}; } sourceTimeCoeffs { // Dummy entry } } // ************************************************************************* // Code:
actions ( { name heatSource; type cellSet; action new; source boxToCell; sourceInfo { box (0 0 0) (0.2 0.2 0.2); } } { name heatSource; type cellZoneSet; action new; source setToCellZone; sourceInfo { set heatSource; } } ); Can somebody help me or explain me, why this is the result? regards Last edited by ChrisBa; March 11, 2019 at 08:49. 

February 24, 2017, 07:27 

#48 
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Hy All
Can I select the surfaces of my mesh? Because i want to define a source only on the surface of the mesh. regards, Chris 

February 24, 2017, 21:45 

#49 
Senior Member

Instead of a volumetric heat source, I would rather say that you need a heatflux boundary condition on a surface.
Maybe these two bounday condition on the following link can be of help: buoyantSimpleFoam: fixed wall heat flux If you use the banana trick on fvOptions for scalarSemiImplctSource Code:
energySource { type scalarSemiImplicitSource; active on; //to switch or not heat source //timeStart 0; //duration 20; selectionMode cellZone; cellZone c0; scalarSemiImplicitSourceCoeffs{ selectionMode banana_all;//cellZone; cellZone c0; volumeMode absolute;//specific;// injectionRateSuSp { h (0 0.1); // q in [W]; or in [W/m³] if you use specific mode } } } Code:
Selecting finite volume options model type scalarSemiImplicitSource Source: energySource > FOAM FATAL IO ERROR: banana_all is not in enumeration: 4 ( all cellSet cellZone points ) I'm not able to figure it out, how manage it on a boundary surface, maybe my thinking is not correct but: try to think you set only a point, with a volumetric heat source on a surface that is a boundary of your computational domain too; then others points what would be, zeroGradient? ok, but how the heat will be transfered? Because other points has zeroGradient so no heat flux along the surface as well as outside of your domain. So you have a heat flux from your heat point on the surface (that belongs to a volumetric cell) toward the center point of the volumetric cell that it belongs to, but as above you're setting a heat flux, not a heat source. Maybe it works for your purpose. You may even think to use thermaBaffles: https://openfoamwiki.net/index.php/F...hermal_baffles https://openfoam.org/release/230/thermal/ Hope it helps. Regards. 

March 11, 2017, 18:11 
How to set "injectionRateSuSp" in "scalarSemiImplicitSource"?

#50 
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Dear Foamers,
I read through the thread and a few other webpages, and found the following to options in injectionRateSuSp to create a heat source by fvOption with scalarSemiImplicitSource: injectionRateSuSp { T (0.1 0); //DT = PHI''' / (rho * cp) } or injectionRateSuSp { h (0.1 0); //W absolute, W/m3 specific } I wonder which one to choose for chtMultiRegionFoam? I chose the second one get the computation result as shown in the photo. The case with OpenFOAM 4.0 is also attached. It is a long thin cuboid with heat source of 10W and a flat large cuboid lying above. There is no thermal contact resistance between each other. The solid is located in the middle of a closed (noSlip for U boundary condition) and insulated box (zeroGradient for T). Only a quarter is simulated, thus two faces of the computation domain are symmetry, and the internal temperature and velocity field can be observed. I simulated for two seconds, so that 20J heat was generated. However the increase of the total internal energy of the two solid cuboids increased only 5J (taking the temperature of the solids is uniform at the highest temperature in domain, and the thermal properties are given in the case). I wonder where are the other 75% of energy? Is it due to the symmetry boundary condition that only 25% of the heat was generated? Thank you very much for any help in advance! Sitajeje 

March 12, 2017, 02:50 

#51 
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Uwe Pilz
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I don't think your problem is due to the b.c. Symmetric simply generates a slip boundary and does not expand the region in any way.
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Uwe Pilz  Die der Hauptbewegung überlagerte Schwankungsbewegung ist in ihren Einzelheiten so hoffnungslos kompliziert, daß ihre theoretische Berechnung aussichtslos erscheint. (Hermann Schlichting, 1950) 

March 12, 2017, 11:51 

#52 
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Hallo Uwe,
thank you very much for your quick reply! I figured out by trial and error that it is the second option is correct: injectionRateSuSp { h (0.1 0); //W absolute, W/m3 specific } It is true that it is nothing to do with the boundary condition. I made the symmetryPlane as Wall, so that it is a complete insulated box. But the temperature is the same, i.e. only 5J emerges in the solid domain, and 15J was missing. Sorry everyone, It was a wrong estimation of the internal energy. I checked with a simpler geometry, it was correct. Sitajeje Last edited by sitajeje; March 12, 2017 at 13:45. 

March 13, 2017, 10:32 

#53 
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Alex
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Hi Sitajeje,
First of all, both implementations should give you the same results since the only difference between them is the comment (the characters behind //), so it has no impact on the calculations. Can you, please, upload your fvSolution specification? Or at least tell us the tolerancies you used for enthalpy for all your regions. Convergence is usually very slow in chtMultiregion* solvers and you would need to set a very low tolerance and let the solver run during several iterations. You can use non ortogonal correctors in order to force the solver to take more iterations. Best regards, Alex
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Web site where I present my Master's Thesis: foamingtime.wordpress.com The case I talk about in this site was solved with chtMultiRegionSimpleFoam solver and involves radiation. Some basic tutorials are also resolved step by step in the web. If you are interested in these matters, you are invited to come in! 

March 13, 2017, 12:27 

#54 
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Alex,
thank you very much for your reply! I tried injectionRateSuSp { T (0.1 0); //DT = PHI''' / (rho * cp) } but there was no heat generated. I checked the solveSolid.H in applications/solvers/heatTransfer/chtMultiRegionFoam/solid, and it is written "fvScalarMatrix hEqn" there. I suppose that is the reason. What is your experience? I used the following: h tolerance 1e7; relTol 0.1 hFinal tolerance 1e7; relTol 0; Can you download my file? I uploaded it in my last input. The velocity and temperature didn't need many iterations. But the pressure frequently needed 1000 iterations. So I changed the "p_rghFinal relTol" from 0 to 0.01. The results were the same. What is your experience? I didn't understand your comments on tolerance and convergence. Thank you very much in advance! Best regards, Sitajeje 

March 31, 2017, 03:02 
Question about fvOptions

#55 
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Hy Foamers,
I work with scalarCodedSource. My solver is buoyantBoussinesqSimpleFoam and I use the version OpenFoam 4.1. I would like to create a volumentric source that uses a constant power. I have deduced from the energy equation that I need the specific power first. This value I then divide by the density rho [kg / m^3] and the heat capacity Cp [J / (kgK)]. By integrating the equation, I would have to multiply this value by the cell volume. My questions are the following: 1. How does the solver handle the fvOptions value? 2. Does the fvOptions(T) function return the calculated value? 3. Is my derivation correct? 4. Is it correct if I use eqn.source() as my variable, if my performance is constant? 5. Can I use this fvOptions also for the solver buoyantBoussinesqPimpleFoam? Thanks in advance for your help. Regards, ChrisBa 

November 1, 2018, 14:20 

#56 
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Guilherme
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Hello, I hope someone can help me ...
If I want to set a fixed pressure gradient, can I? to a cyclic domain (pipe). Could anyone teach me how to configure these options in my fvOptions? Thanks. 

November 30, 2018, 05:37 
Coded Source table input

#57 
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Calum Roberts
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Hi there
I am trying to implement a heat sink through scalarCodedSource using a table of calculated Heat fluxes as my input. Can anyone give me any advice on the implementation of this? I am familiar with using tables to specify boundary conditions but am unsure how to implement them in the source. Any help would be appreciated! 

September 5, 2019, 09:06 

#58 
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Vishnu
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Hi all,
My case was porous medium with heat transfer. But I only need to generate heat source on wall of the solid body (ie. on surface). Not from fluid body. These are my BC for wall surface which i have to create heat source (at this BC's) wallmp1 wallmp2 walldp1 walldp2 And I have used cyclicAMI type for interfacing the fluid regions and for measure the pressure values. So I succeed with cyclicAMI, now i have to create a heat source at wall(ie @surface). I need to only check heat distribution from those BC's. Solver i am using is porousSimpleFoam.. Running mpirun np no.ofprocessor porousSimpleFoam parallel Now my case is with heat transfer,incompressible fluid, steady state I have an input like heat flux (W/m2) and heat generation (W) value. I am getting this error while running. I know i have to include energy equation.. I don't have an idea about header file creation.. Code:
> FOAM Warning : From function void option::checkApplied() const in file fvOptions/fvOption.c at line 368 Source wallmp1 defined for field h but never used energy equation for porousSimpleFoam Please correct me what i have to modify in this EEqn.H file Code:
{ volScalarField& he = thermo.he(); fvScalarMatrix EEqn ( fvm::div(phi, he) + fvc::div(phi, K) + ( he.name() == "e" ? fvc::div ( fvc::absolute(phi/fvc::interpolate(rho), U), p, "div(phiv,p)" ) : dpdt )  fvm::laplacian(turbulence>alphaEff(), he) == + fvOptions(rho, he) ); EEqn.relax(); fvOptions.constrain(EEqn); EEqn.solve(); fvOptions.correct(he); thermo.correct(); radiation>correct(); } Vishsel 

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fvoptions, heat source, scalarcodedsource 
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