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Using OpenFOAM to run a 2D convection-diffusion simulation of a compressible steady-s |
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October 26, 2021, 09:57 |
Using OpenFOAM to run a 2D convection-diffusion simulation of a compressible steady-s
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#1 |
Member
Foad
Join Date: Aug 2017
Posts: 58
Rep Power: 9 |
Following this question, I'm thinking of using OpenFOAM to run a series of simulations measuring the amount of net heat transferred through a relatively small hole in a thin isolating wall, between two half infinite spaces:
assumptions:
What I would like to know is that given T1, T2, and D, what is the net heat transferred through the hole. Things I am not sure how to do:
I used to use OpenFOAM a couple of years ago but the knowledge has completely faded away now. I'm basically not sure where to start and how to follow from there. I would appreciate it if you could help me get it started. |
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October 26, 2021, 12:59 |
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#2 |
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1) What do you mean by having a hyperbolic 2D mesh? the mesh is extruded using a hyperbolic marching from the walls? if so why should that matter?
2) I've never used CHT (conjugate heat transfer) before, but I believe that you need to use a CHT solver such as chtMultiRegionFoam. 3) I think you need to use a source term for heating/cooling. You can use fvOptions for that (using scalarSemiImplicitSource ?). 4) I am not sure but I maybe there are some function objects for that purpose. Regards |
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December 6, 2021, 06:19 |
Implementing the geometry in blockMeshDict
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#3 |
Member
Foad
Join Date: Aug 2017
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as a follow-up, I first tried modeling the problem in Elmer here. Sadly Elmer doesn't seem to be very capable when it comes to compressive and turbulent flow, I'm being told.
Now I want to try OpenFOAM again. To start I have implemented the geometry in blockMesh/blockMeshDict (see the blockMeshDict.zip file attached here). Now there are some issues that I am not sure about:
and in general, are there any other points that I have missed? Thanks for your support in advance. Last edited by foadsf; December 7, 2021 at 06:59. |
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December 7, 2021, 05:21 |
fixed some syntax error but it still doesn't generate the mesh
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#4 |
Member
Foad
Join Date: Aug 2017
Posts: 58
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So far I have fixed several syntax mistakes. But the mesh still doesn't compile:
Code:
/*---------------------------------------------------------------------------*\ ========= | \\ / F ield | OpenFOAM: The Open Source CFD Toolbox \\ / O peration | Website: https://openfoam.org \\ / A nd | Version: 8 \\/ M anipulation | \*---------------------------------------------------------------------------*/ /* Windows 32 and 64 bit porting by blueCAPE: http://www.bluecape.com.pt *\ | Based on Windows porting (2.0.x v4) by Symscape: http://www.symscape.com | \*---------------------------------------------------------------------------*/ Build : 8-53cd1468e263 Exec : C:/Users/FOOBAR~1/Desktop/BLUECF~1/OpenFOAM-8/platforms/mingw_w64GccDPInt32Opt/bin/blockMesh.exe Date : Dec 07 2021 Time : 10:10:16 Host : "..." PID : 14556 I/O : uncollated Case : C:/Users/foobar/Desktop/NatConvHole nProcs : 1 SigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10) allowSystemOperations : Allowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Creating block mesh from "system/blockMeshDict" Using #calcEntry at line 31 in file "C:/Users/foobar/Desktop/NatConvHole/system/blockMeshDict" Using #codeStream with "C:/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f.so" Creating new library in "dynamicCode/_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f.so" Invoking "wmake -s libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f" C:\Users\foobar\Desktop\NatConvHole>sh.exe -c "wmake -s libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f" wmake libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f ln: ./lnInclude wmkdep: codeStreamTemplate.C Ctoo: codeStreamTemplate.C $(C:/Users/FOOBAR~1/Desktop/BLUECF~1/OpenFOAM-8/wmake/scripts/makeReinterpretExePath windres) Make/mingw_w64GccDPInt32Opt/version_of_build.rc Make/mingw_w64GccDPInt32Opt/version_of_build.o ld: /c/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f.dll cv2pdb: /c/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f.dll C:/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_bb2ab769c7dc73e86d95f4cb26e7041d546c2e6f.pdb: cannot load PDB helper DLL Error occurred with cv2pdb, have stripped binary as a workaround. Using #calcEntry at line 40 in file "C:/Users/foobar/Desktop/NatConvHole/system/blockMeshDict" Using #codeStream with "C:/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_0dacf6e2b2c7b448a15a6c4785b99d9461616f91.so" Creating new library in "dynamicCode/_0dacf6e2b2c7b448a15a6c4785b99d9461616f91/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_0dacf6e2b2c7b448a15a6c4785b99d9461616f91.so" Invoking "wmake -s libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_0dacf6e2b2c7b448a15a6c4785b99d9461616f91" C:\Users\foobar\Desktop\NatConvHole>sh.exe -c "wmake -s libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_0dacf6e2b2c7b448a15a6c4785b99d9461616f91" wmake libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_0dacf6e2b2c7b448a15a6c4785b99d9461616f91 ln: ./lnInclude wmkdep: codeStreamTemplate.C Ctoo: codeStreamTemplate.C $(C:/Users/FOOBAR~1/Desktop/BLUECF~1/OpenFOAM-8/wmake/scripts/makeReinterpretExePath windres) Make/mingw_w64GccDPInt32Opt/version_of_build.rc Make/mingw_w64GccDPInt32Opt/version_of_build.o ld: /c/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_0dacf6e2b2c7b448a15a6c4785b99d9461616f91.dll cv2pdb: /c/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_0dacf6e2b2c7b448a15a6c4785b99d9461616f91.dll C:/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_0dacf6e2b2c7b448a15a6c4785b99d9461616f91.pdb: cannot load PDB helper DLL Error occurred with cv2pdb, have stripped binary as a workaround. Using #calcEntry at line 42 in file "C:/Users/foobar/Desktop/NatConvHole/system/blockMeshDict" Using #codeStream with "C:/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_14e88731353dbdb7d49e0cda1faa7bfafef87455.so" Creating new library in "dynamicCode/_14e88731353dbdb7d49e0cda1faa7bfafef87455/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_14e88731353dbdb7d49e0cda1faa7bfafef87455.so" Invoking "wmake -s libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_14e88731353dbdb7d49e0cda1faa7bfafef87455" C:\Users\foobar\Desktop\NatConvHole>sh.exe -c "wmake -s libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_14e88731353dbdb7d49e0cda1faa7bfafef87455" wmake libso C:/Users/foobar/Desktop/NatConvHole/dynamicCode/_14e88731353dbdb7d49e0cda1faa7bfafef87455 ln: ./lnInclude wmkdep: codeStreamTemplate.C Ctoo: codeStreamTemplate.C $(C:/Users/FOOBAR~1/Desktop/BLUECF~1/OpenFOAM-8/wmake/scripts/makeReinterpretExePath windres) Make/mingw_w64GccDPInt32Opt/version_of_build.rc Make/mingw_w64GccDPInt32Opt/version_of_build.o ld: /c/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_14e88731353dbdb7d49e0cda1faa7bfafef87455.dll cv2pdb: /c/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_14e88731353dbdb7d49e0cda1faa7bfafef87455.dll C:/Users/foobar/Desktop/NatConvHole/dynamicCode/platforms/mingw_w64GccDPInt32Opt/lib/libcodeStream_14e88731353dbdb7d49e0cda1faa7bfafef87455.pdb: cannot load PDB helper DLL Error occurred with cv2pdb, have stripped binary as a workaround. Creating block edges No non-planar block faces defined Creating topology blocks Creating topology patches Creating block mesh topology --> FOAM FATAL ERROR: face 1 in patch 0 does not have neighbour cell face: 4(12 17 5 0) From function Foam::labelList Foam::polyMesh::facePatchFaceCells(const faceList&, const labelListList&, const faceListList&, Foam::label) const in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 118. FOAM aborting Generating stack trace... Backtrace: ZN10StackTraceC1Ev [0x626c1855+0x25] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\ThirdParty-8\platforms\mingw_w64GccDPInt32\lib\libstack_trace.dll ZN4Foam5error10printStackERNS_7OstreamE [0x6c30ae5a+0x23a] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll ZN4Foam5error5abortEv [0x6c0c68b1+0x211] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll ZNK4Foam8polyMesh18facePatchFaceCellsERKNS_4ListINS_4faceEEERKNS1_INS1_IiEEEERKNS1_IS3_EEi [0x6c26d96c+0x2fc] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll ZN4Foam8polyMesh11setTopologyERKNS_4ListINS_9cellShapeEEERKNS1_INS1_INS_4faceEEEEERKNS1_INS_4wordEEERNS1_IiEESG_RiSH_RNS1_INS_4cellEEE [0x6c26e0a0+0x6a0] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll ZN4Foam8polyMeshC1ERKNS_8IOobjectEONS_5FieldINS_6VectorIdEEEERKNS_4ListINS_9cellShapeEEERKNS9_INS9_INS_4faceEEEEERKNS9_INS_4wordEEERKNS_7PtrListINS_10dictionaryEEERKSJ_ST_b [0x6c271629+0x7a9] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libOpenFOAM.dll ZN4Foam9blockMesh14createTopologyERKNS_12IOdictionaryERKNS_4wordE [0x67e22b6d+0x11ad] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libblockMesh.dll ZN4Foam9blockMeshC1ERKNS_12IOdictionaryERKNS_4wordE [0x67e1c49d+0x51d] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\lib\libblockMesh.dll (No symbol) [0x406c1e] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\bin\blockMesh.exe (No symbol) [0x4013c1] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\bin\blockMesh.exe (No symbol) [0x4014f6] module: C:\Users\FOOBAR~1\Desktop\BLUECF~1\OpenFOAM-8\platforms\mingw_w64GccDPInt32Opt\bin\blockMesh.exe BaseThreadInitThunk [0x7ffb55217034+0x14] module: C:\WINDOWS\System32\KERNEL32.DLL RtlUserThreadStart [0x7ffb55c62651+0x21] module: C:\WINDOWS\SYSTEM32\ntdll.dll Last edited by foadsf; December 7, 2021 at 06:59. |
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December 7, 2021, 08:05 |
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#5 | |
Member
Ashutosh
Join Date: Jul 2021
Location: India
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Quote:
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December 7, 2021, 08:43 |
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#7 | ||
Member
Join Date: Aug 2017
Location: Algeria
Posts: 98
Rep Power: 9 |
Quote:
Quote:
__________________
"When in doubt, use brute force." -- Ken Thompson |
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December 7, 2021, 09:07 |
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#8 | ||
Member
Foad
Join Date: Aug 2017
Posts: 58
Rep Power: 9 |
Quote:
Code:
--> FOAM FATAL ERROR: face 1 in patch 0 does not have neighbour cell face: 4(12 17 5 0) From function Foam::labelList Foam::polyMesh::facePatchFaceCells(const faceList&, const labelListList&, const faceListList&, Foam::label) const in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 118. FOAM aborting Quote:
Code:
--> FOAM FATAL ERROR: Trying to specify a boundary face 4(16 4 6 18) on the face on cell 2 which is either an internal face or already belongs to some other patch. This is face 0 of patch 2 named isoWalls. From function void Foam::polyMesh::setTopology(const cellShapeList&, const faceListList&, const wordList&, Foam::labelList&, Foam::labelList&, Foam::label&, Foam::label&, Foam::cellList&) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 324. FOAM aborting |
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December 7, 2021, 09:43 |
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#9 |
Member
Join Date: Aug 2017
Location: Algeria
Posts: 98
Rep Power: 9 |
I have tested your blockMeshDict with OpenFOAM8, OpenFOAM9, and OpenFOAM v2106 and it works without any issues.
BTW, your file line ending is \r\n, Please try to run: Code:
dos2unix blockMeshDict
__________________
"When in doubt, use brute force." -- Ken Thompson |
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December 7, 2021, 10:17 |
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#10 |
Member
Foad
Join Date: Aug 2017
Posts: 58
Rep Power: 9 |
I don't have the dos2unix package installed and as you may see in the comments of this post, I am not able to install anything inside the MSYS2:
Code:
pacman -Ss dos2unix error: mingw32: signature from "David Macek <david.macek.0@gmail.com>" is unknown trust error: mingw64: signature from "David Macek <david.macek.0@gmail.com>" is unknown trust error: msys: signature from "David Macek <david.macek.0@gmail.com>" is unknown trust error: database 'mingw32' is not valid (invalid or corrupted database (PGP signature)) error: database 'mingw64' is not valid (invalid or corrupted database (PGP signature)) error: database 'msys' is not valid (invalid or corrupted database (PGP signature)) what I also need to figure out is how to define a faceZone in a topoSetDict file and use the createBaffles command to create the internal thin-walled boundary conditions. (described here) |
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December 7, 2021, 10:58 |
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#11 |
Member
Join Date: Aug 2017
Location: Algeria
Posts: 98
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Try sed:
Code:
sed -i.bak 's/\r$//' blockMeshDict From the "Edit" menu, select "EOL Conversion" -> "UNIX/OSX Format". To find some examples on how to create a faceZoneSet, run: Code:
find $FOAM_TUTORIALS -name 'topoSetDict' -exec grep -Hi 'faceZone' {} \; Code:
/opt/openfoam8/tutorials/multiphase/potentialFreeSurfaceFoam/oscillatingBox/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/multiphase/potentialFreeSurfaceFoam/oscillatingBox/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/multiphase/potentialFreeSurfaceFoam/movingOscillatingBox/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/multiphase/potentialFreeSurfaceFoam/movingOscillatingBox/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/multiphase/interFoam/RAS/damBreakPorousBaffle/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/multiphase/interFoam/RAS/damBreakPorousBaffle/system/topoSetDict: source setsToFaceZone; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/filter/system/topoSetDict: // Create faceZone from cycLeft /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/filter/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/filter/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/filter/system/topoSetDict: // Create faceZone from cycRight /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/filter/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/filter/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/splashPanel/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/splashPanel/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/cylinder/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/lagrangian/reactingParcelFoam/cylinder/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/TJunctionFan/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/TJunctionFan/system/topoSetDict: source setsToFaceZone; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/TJunctionFan/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/TJunctionFan/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/topoSetDict: // Create faceZone for patch couple1 /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/topoSetDict: source setToFaceZone; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/topoSetDict: // Create faceZone for patch couple2 /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/topoSetDict: type faceZoneSet; /opt/openfoam8/tutorials/incompressible/pimpleFoam/RAS/oscillatingInletACMI2D/system/topoSetDict: source setToFaceZone;
__________________
"When in doubt, use brute force." -- Ken Thompson Last edited by s1291; December 7, 2021 at 12:58. |
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December 7, 2021, 11:16 |
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#12 |
Member
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Location: Algeria
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I hope the following will solve your installation issues with pacman on MSYS2:
Code:
pacman -S msys2-keyring this thread on github.
__________________
"When in doubt, use brute force." -- Ken Thompson |
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December 8, 2021, 10:36 |
some updates
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#13 |
Member
Foad
Join Date: Aug 2017
Posts: 58
Rep Power: 9 |
A couple of minor updates:
- The MSYS2 folks tried helping me here on the Discord server. The MSYS2 issues are resolved but the missing libstdc++-6.dll and msmpi.dll libraries are still persistent. - Opened a new issue here on the OpenFOAM GitLab repository. - To search the content of the textual files in the Windows cmd terminal, one can use the native command: Code:
findstr /s /i /c:"<string>" "*.*" | more |
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December 10, 2021, 05:12 |
some questions answered on OpenFOAM Discord
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#14 |
Member
Foad
Join Date: Aug 2017
Posts: 58
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Some of the original questions have been answered here on OpenFOAM Discord.
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December 12, 2021, 09:08 |
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#15 |
Super Moderator
Tobias Holzmann
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As I was pinged in Twitter here are the following comments:
__________________
Keep foaming, Tobias Holzmann |
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December 13, 2021, 17:57 |
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#16 | ||||||
Member
Foad
Join Date: Aug 2017
Posts: 58
Rep Power: 9 |
Thanks a lot for the kind response. I went through your points one by one:
Quote:
What I wanted to do was to, for example using this image as the reference, write (0 1 6 10) instead of two (0 1 7 11) and (7 6 10 11), which doesn't seem to be possible. Quote:
I am not sure if I understand this point. Maybe you can be kind to elaborate? Quote:
Code:
isoWalls { type wall; faces ( (16 4 6 18) //(18 6 4 16) (19 7 1 13) //(13 1 7 19) ); } Quote:
Quote:
Quote:
Thanks for your support again. I am gonna try the above points and come back to report here. |
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December 14, 2021, 04:30 |
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#17 |
Senior Member
Jan
Join Date: Jul 2009
Location: Hamburg
Posts: 143
Rep Power: 20 |
Hi,
for generating some local refinement, you can simply generate a cell set with topoSet and refine that with refineMesh. No need to use snappyHexMesh Best, Jan |
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compressible, convection, openfoam, steady-state |
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