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July 15, 2008, 03:28 |
Hi,
I just downloaded 1.5;
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#1 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
Hi,
I just downloaded 1.5; nice work and thanks a lot! Though I wonder, if there is a tutorial case for the new cht solver? I could not find. Fabian |
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July 15, 2008, 06:57 |
Small overview ;-)
Attached
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#2 |
Senior Member
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,419
Rep Power: 26 |
Small overview ;-)
Attached a simple testcase. Do not run blockMesh, just chtMultiRegionFoam. |
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July 15, 2008, 06:58 |
three solids, two air doma
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#3 |
Guest
Posts: n/a
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three solids, two air domains with flow through the top domain. Bottom of T-shaped heater is heated. |
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July 15, 2008, 07:46 |
No problem, but it seems there
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#4 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
No problem, but it seems there is a new version of the forum-software... I am not able to download the simple testcase ;-)
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July 15, 2008, 08:04 |
Even I can not be able to down
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#5 |
Senior Member
Nishant
Join Date: Mar 2009
Location: Glasgow, UK
Posts: 166
Rep Power: 17 |
Even I can not be able to download the software
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Thanks and regards, Nishant |
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July 15, 2008, 08:05 |
sorry .. not software.. but th
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#6 |
Senior Member
Nishant
Join Date: Mar 2009
Location: Glasgow, UK
Posts: 166
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sorry .. not software.. but the simple testcase directory!
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Thanks and regards, Nishant |
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July 15, 2008, 14:53 |
Mesh was too big for the forum
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#7 |
Senior Member
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,419
Rep Power: 26 |
Mesh was too big for the forum to upload. I put together a simple blockMesh case. Check the Allrun script on how to run it. Haven't checked the output so please let me know if there are any problems with it.
multiRegionHeater.tgz |
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July 16, 2008, 07:49 |
Hi Mattijs,
thanks, it's ru
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#8 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
Hi Mattijs,
thanks, it's running, when typing the Allrun script line by line. I couldn't check the output yet, due to the qt-paraview depence (still have the old qt); using 'foamToVTK' with cellSet I was not successful.. I.e. there is just a mesh in the created vtk files. There is probably some other option to get the results!? Fabian |
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July 16, 2008, 08:24 |
Hi!
I'm not sure, whether I'm
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#9 |
New Member
Jens Wunderlich-Pfeiffer
Join Date: Mar 2009
Location: Berlin
Posts: 12
Rep Power: 17 |
Hi!
I'm not sure, whether I'm right here. I want to use a solver with conjugate heat transfer for an incompressible fluid; but the cht-solver is for compressible flow, isn't it? I've worked with the conjugateHeatFoam Solver in 1.4.1-dev; but I can't find it in 1.5 Any hints? Thank you. Jens |
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July 16, 2008, 11:37 |
Dear Jens,
the content of t
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#10 |
Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,912
Rep Power: 36 |
Dear Jens,
the content of the -dev tree is not included in the OpenCFD released version. Regards, A.
__________________
Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using. |
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July 24, 2008, 03:21 |
Dear Fabian,
I had your sam
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#11 |
New Member
Andrea M.A. Barbera
Join Date: Mar 2009
Location: Turin, Italy
Posts: 7
Rep Power: 17 |
Dear Fabian,
I had your same problem in using standard parafoam utility, but I have found a way to use VTK: in first time step the mesh of every region is stored. If you copy all that meshes in constant/[RegionName]/polyMesh and then run many times the assignment foamToVTK -region [RegionName] (one time for each region) you should be able to open five different meshes in any version of paraview. Probably better ways exist but it works Regards Andrea |
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July 28, 2008, 01:35 |
Hi Andrea,
thanks for your
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#12 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
Hi Andrea,
thanks for your help; it works. Regards! Fabian |
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August 25, 2008, 05:44 |
Hi,
I am trying to run the
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#13 |
New Member
Bitan SHU
Join Date: Mar 2009
Posts: 14
Rep Power: 17 |
Hi,
I am trying to run the chtRegionHeater with the case above according the steps listed in Allrun. Unfortunately, at the step "splitMeshRegions -cellZones" I get a long error message as below. It happens under Suse10.3 and Ubuntun 8.04 too. Could anyone please take a look? I appreciate for any hint. Regards, Bitan Shu ERROR: ---------------------------------------- ... Region 0 -------- Creating mesh for region 0 bottomAir Testing:"/home/shu/OpenFOAM/shu-1.5/run/projects/multiRegionHeater/system/bottom Air/fvSchemes" Mapping fields Mapping field T #0 Foam::error::printStack(Foam:stream&) in "/home/shu/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so" #1 Foam::sigFpe::sigFpeHandler(int) in "/home/shu/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libOpenFOAM.so" #2 Uninterpreted: [0xffffe420] #3 Foam::calculatedFvPatchField<double>::clone(Foam:: DimensionedField<double,> const&) const in "/home/shu/OpenFOAM/OpenFOAM-1.5/lib/linuxGccDPOpt/libfiniteVolume.so" #4 Foam::GeometricField<double,>::GeometricBoundaryFi eld::GeometricBoundaryField(Fo am::fvBoundaryMesh const&, Foam::DimensionedField<double,> const&, Foam::PtrList<foam::fvpatchfield<double> > const&) in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " #5 Foam::GeometricField<double,>::GeometricField(Foam ::IOobject const&, Foam::fvMesh const&, Foam::dimensionSet const&, Foam::Field<double> const&, Foam::PtrList<foam::fvpatchfield<double> > const&) in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " #6 Foam::tmp<foam::geometricfield<double,> > Foam::fvMeshSubset::interpolate<double>(Foam::Geom etricField<double,> const&, Foam::fvMesh const&, Foam::List<int> const&, Foam::List<int> const&, Foam::List<int> const&) in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " #7 void subsetVolFields<foam::geometricfield<double,> >(Foam::fvMesh const&, Foam::fvMesh const&, Foam::List<int> const&, Foam::List<int> const&) in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " #8 createAndWriteRegion(Foam::fvMesh const&, Foam::regionSplit const&, Foam::List<foam::word> const&, Foam::EdgeMap<int> const&, int) in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " #9 main in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " #10 __libc_start_main in "/lib/tls/libc.so.6" #11 Foam::regIOobject::readIfModified() in "/home/shu/OpenFOAM/OpenFOAM-1.5/applications/bin/linuxGccDPOpt/splitMeshRegions " Gleitkomma-Ausnahme |
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October 6, 2008, 06:35 |
dear all!!
i run the multiR
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#14 |
Senior Member
Aram Amouzandeh
Join Date: Mar 2009
Location: Vienna, Vienna, Austria
Posts: 190
Rep Power: 17 |
dear all!!
i run the multiRegionHeater tutorial case; the calculation finishes successfully. the problem i face now is the visualization. when opening the case with paraFoam i can import all the regions/meshes (left/rightsSolid, heater, top/bottomAir) stored in the VTK directory, but cannot display any quantity. No physical quantity can be chosen on "Vol Field Status" of multiRegionHeater.OpenFOAM. the property menu of the different regions is empty and no quantity can be chosen from the "color by" tab. does anybody have an idea? appreciate any comment! thx in advance! aram |
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October 6, 2008, 07:54 |
Hi all,
When running the tu
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#15 |
Member
Roland
Join Date: Mar 2009
Location: Netherlands
Posts: 92
Rep Power: 17 |
Hi all,
When running the tutorial provided with chtMultiregionFoam, the temperature is not affected by the velocity. I increased the inlet velocity to 0.1, but the temperature field does not change. Although the velocity is calculated correctly, the temperature seems to be affected by conduction only, as shown in the picture. Any help is appreciated. Sylvester |
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October 8, 2008, 03:18 |
nobody an idea?
aram
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#16 |
Senior Member
Aram Amouzandeh
Join Date: Mar 2009
Location: Vienna, Vienna, Austria
Posts: 190
Rep Power: 17 |
nobody an idea?
aram |
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October 16, 2008, 10:12 |
hi!!
tried the method sugge
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#17 |
Senior Member
Aram Amouzandeh
Join Date: Mar 2009
Location: Vienna, Vienna, Austria
Posts: 190
Rep Power: 17 |
hi!!
tried the method suggested by Andrea and it works well! its a bit complicated though, so does somebody know another way? thx to all! aram |
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October 21, 2008, 09:39 |
hi!!
i m about to study and
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#18 |
Senior Member
Aram Amouzandeh
Join Date: Mar 2009
Location: Vienna, Vienna, Austria
Posts: 190
Rep Power: 17 |
hi!!
i m about to study and modify the multiRegionHeater tutorial case. there i get some results which seem not to be realistic; e.g. is the range of density roh in the fluid region (air) calculated with [9.30455, 13.0787] kg/m^3. @Sylvester: have you made further experience with the chtMultiRegionFoam solver? appreciate any comment!! thanks in advance! aram |
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October 23, 2008, 10:19 |
hi all!!
dissolved my confu
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#19 |
Senior Member
Aram Amouzandeh
Join Date: Mar 2009
Location: Vienna, Vienna, Austria
Posts: 190
Rep Power: 17 |
hi all!!
dissolved my confusion concerning the density (one should have a better look on the BCs!!); it was calculated correctly as the pressure p (specified in system/topAir/changeDictionaryDict) was set to 1000000 Pa (= 10 bar, instead of the expected 1 bar). Furthermore did I have a look on the BCs coupling the T-field of fluid and solid regions. I would like to pose a question: why is the flux not divided by the patch surface for the calculation of the gradient (see solidWallHeatFluxTemperatureCoupledFvPatchScalarFi eld.C), as the flux, calculated in solidWallTemperatureCoupledFvPatchScalarField.C is determined in the units of Watt? _solidWallHeatFluxTemperatureCoupledFvPatchScalarF ield.C: gradient() = refCast<const>(neighbourField).flux()/K; _solidWallTemperatureCoupledFvPatchScalarField.C: Foam::tmp<foam::scalarfield> Foam::solidWallTemperatureCoupledFvPatchScalarFiel d::flux() const { const fvPatchScalarField& Kw = patch().lookupPatchField<volscalarfield,>(KName_); const fvPatchScalarField& Tw = *this; return Tw.snGrad()*patch().magSf()*Kw; } thx in advance for any comments!! aram |
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November 7, 2008, 04:37 |
Dear All,
I have a problem,
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#20 |
Member
Tobias Holzinger
Join Date: Mar 2009
Location: Munich, Germany
Posts: 46
Rep Power: 17 |
Dear All,
I have a problem, impressing a finer meshRegion on top of the left&right Solid in the multiRegionHeater. I already managed to refine the hole topAir region by applying refineMesh on the cellSet. My next idea was to create a layer cellSet fineMesh: cellSet topAir new boxToCell (-100 0.02 -100 )(100 100 100) cellSet fineMesh new boxToCell (-100 0.01 -100 )(100 0.02 100) cellSet fineMesh delete cellToCell topAir ), refine this area and restart chtMultiregionFoam. But there are further Problems coming up with this Idea: 1. spliting the fluidregion creates a fluid-fluid Interface --> what kind of BC do i have to set? 2. stitchMesh does not work: stitchMesh fineMesh_to_topAir topAir_to_fineMes ********************** // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create mesh for time = 0.001 Coupling patches fineMesh_to_topAir and topAir_to_fineMesh Resulting (internal) faces will be in faceZone fineMesh_to_topAirtopAir_to_fineMeshCutFaceZone Note: the overall area covered by both patches should be identical ("integral" interface). If this is not the case use the -partial option Cannot find patch fineMesh_to_topAir It should be present and of non-zero size Valid patches are 6 ( maxY minX maxX minY minZ maxZ ) ********************** 3. using refineMesh in combination with subsetMesh makes the other cellZones inaccessible for setsToZones and splitMeshRegions Did I miss a command or how can I remerge the two regions topAir and fineMesh? Any Ideas? THX Tobias
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Tobias Holzinger Chair of Thermodynamics, TU München |
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