[Commercial meshers] Harpoon to Foam

hjasak · March 9, 2006, 07:32

Well, I have written the code which reads the Star couples and creates the proper cells. This is a part of the starToFoam converter and everything should just work.

If you really want to do us a favour, you can dump the faces raw because I'm sure Harpoon needs to mess about with the native format to create Star couples in the first place. The easies mesh format I can imagine would be:
1) list of vertices
2) list of faces in terms of vertices; I don't care if they are polygons
3) there's options, whichever is easier for you:
- list of cells in terms of faces, i.e. all faces that belong to a cell, or
- "left" and "right" cell for each faces (for boundary ones, only one is required).

If you can provide this info, I cna take it from there.

Regards,

Hrv

sharc · March 21, 2006, 07:49

The Fluent export would be the most useful.
It is probably quicker to finish off the FOAM export I started. Can I send you some files to test? If so, what email address should I use?

hjasak · March 21, 2006, 07:54

No probs - if needed, I will add the stuff into the Fluent export as well. The best E-mail is h dot jasak at wikki dot co dot uk.

Thanks,

Hrv

sharc · March 23, 2006, 10:12

Thanks to Hrvoje checking our meshes, the next release of Harpoon will have a OpenFoam direct export. This will be available in the next couple of weeks to download from www.sharc.co.uk

hsieh · March 28, 2006, 07:49

Hi, Richard,

Could you please post here when the new release of Harpoon with OpenFOAM export is available? I am interested in trying it. Thanks!

Pei

sharc · March 30, 2006, 02:40

Pei

Will do. I have run some tests on it and it looks ok but would need more testing. Version will not be ready until end of next week at the earliest

Richard

sharc · April 12, 2006, 03:49

All

Version v2.0(e) is now available for download. Run with the command line option -foam to allow OpenFoam export

Richard

hsieh · April 13, 2006, 16:08

Hi, Richard,

Can you explain how to export OpenFOAM using command line option? I am using Windows version and I cannot find a window for entering commands.
Thanks!

Pei

stefanke · April 13, 2006, 18:10

Just start the executable: "harpoon -foam"

hsieh · April 20, 2006, 21:47

Hi, Richard,

I encountered a couple of problems when trying out Harpoon. The most serious one is that, after exporting the mesh to OpenFOAM format, these files (boundary/cells/points/faces) are not usable. When I tried to open the files, I got "this file is binary...". This occurred to both the 32 bit windows version and the 64 bit Linux version.

I am wondering how this can be resolved.

Pei

stefanke · April 21, 2006, 03:20

Harpoon is not ready for OpenFoam 1.3. But with OpenFoam 1.2 it should work!

eugene · April 21, 2006, 05:58

Whats wrong with binary files? What does checkMesh say?

The OF 1.3 mesh constructors are backward compatible with 1.2 formats so there should be no issue.

stefanke · April 21, 2006, 06:08

I have tested the new Harpoon release and there was always the same problem with OF 1.3 (same failure as described above). With OF 1.2 all works fine.

So it has definitly something to do with the version of OF and/or the way how the meshes are created in Harpoon so OF is able to read them.

eugene · April 21, 2006, 10:42

Could you mail me a small example mesh from harpoon please?

eugene · May 17, 2006, 08:27

I have found out why the harpoon exported mesh does not work under OF1.3.

The boundary file has been written in DOS format and the handling of the DOS characters have changed between 1.2 and 1.3.

To fix the problem execute the following command:
dos2unix -n[list=1] <newboundaryfile>

This works on the test case I received. Could someone please confirm the fix.

sharc · June 19, 2006, 08:12

The problem is probably that you are using the single precision version. Harpoon exports the data in double precision

sharc · June 19, 2006, 08:20

Use the ASCII export. Should be fine

stefanke · June 19, 2006, 09:03

the harpoon export works fine with OF1.2 and OF1.3 but as Eugene has already mentioned one have to convert the boundary file (ASCII) from the dos to unix format!

I think the following 2 options were very useful in order to use harpoon with OpenFOAM:

- boundary file in unix format (instead of dos)
- save the exported files as boundary, cells, faces, points and not as xxx.boundary etc.

alexandrepereira · March 25, 2008, 18:38

I am trying to use Harpoon as a mesher for OpenFOAM... i am now using OF 1.4.1 under Ubuntu 7.10 32 bits...

Anyone has experience running Harpoon unde Linux x32 Kernel 2.6.x?

I can start the gui... and i can mesh geometries, but once i try to export in any format, OpenFoam, Fluent, CFX5, shell states that it cannot get Global nears... and no export file is created...

Any hint on what might be happening?

Thanks for your time

Alex

March 9, 2006, 07:32	Well, I have written the code	#41
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,905 Rep Power: 33	Well, I have written the code which reads the Star couples and creates the proper cells. This is a part of the starToFoam converter and everything should just work. If you really want to do us a favour, you can dump the faces raw because I'm sure Harpoon needs to mess about with the native format to create Star couples in the first place. The easies mesh format I can imagine would be: 1) list of vertices 2) list of faces in terms of vertices; I don't care if they are polygons 3) there's options, whichever is easier for you: - list of cells in terms of faces, i.e. all faces that belong to a cell, or - "left" and "right" cell for each faces (for boundary ones, only one is required). If you can provide this info, I cna take it from there. Regards, Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

March 21, 2006, 07:49	The Fluent export would be the	#42
sharc New Member Richard Bardwell Join Date: Mar 2009 Posts: 9 Rep Power: 17	The Fluent export would be the most useful. It is probably quicker to finish off the FOAM export I started. Can I send you some files to test? If so, what email address should I use?

March 21, 2006, 07:54	No probs - if needed, I will a	#43
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,905 Rep Power: 33	No probs - if needed, I will add the stuff into the Fluent export as well. The best E-mail is h dot jasak at wikki dot co dot uk. Thanks, Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

March 23, 2006, 10:12	Thanks to Hrvoje checking our	#44
sharc New Member Richard Bardwell Join Date: Mar 2009 Posts: 9 Rep Power: 17	Thanks to Hrvoje checking our meshes, the next release of Harpoon will have a OpenFoam direct export. This will be available in the next couple of weeks to download from www.sharc.co.uk

March 28, 2006, 07:49	Hi, Richard, Could you ple	#45
hsieh Senior Member Pei-Ying Hsieh Join Date: Mar 2009 Posts: 317 Rep Power: 18	Hi, Richard, Could you please post here when the new release of Harpoon with OpenFOAM export is available? I am interested in trying it. Thanks! Pei

March 30, 2006, 02:40	Pei Will do. I have run som	#46
sharc New Member Richard Bardwell Join Date: Mar 2009 Posts: 9 Rep Power: 17	Pei Will do. I have run some tests on it and it looks ok but would need more testing. Version will not be ready until end of next week at the earliest Richard

April 12, 2006, 03:49	All Version v2.0(e) is now	#47
sharc New Member Richard Bardwell Join Date: Mar 2009 Posts: 9 Rep Power: 17	All Version v2.0(e) is now available for download. Run with the command line option -foam to allow OpenFoam export Richard

April 13, 2006, 16:08	Hi, Richard, Can you explai	#48
hsieh Senior Member Pei-Ying Hsieh Join Date: Mar 2009 Posts: 317 Rep Power: 18	Hi, Richard, Can you explain how to export OpenFOAM using command line option? I am using Windows version and I cannot find a window for entering commands. Thanks! Pei

April 13, 2006, 18:10	Just start the executable: "ha	#49
stefanke Member stefan Join Date: Mar 2009 Posts: 96 Rep Power: 17	Just start the executable: "harpoon -foam"

April 20, 2006, 21:47	Hi, Richard, I encountered	#50
hsieh Senior Member Pei-Ying Hsieh Join Date: Mar 2009 Posts: 317 Rep Power: 18	Hi, Richard, I encountered a couple of problems when trying out Harpoon. The most serious one is that, after exporting the mesh to OpenFOAM format, these files (boundary/cells/points/faces) are not usable. When I tried to open the files, I got "this file is binary...". This occurred to both the 32 bit windows version and the 64 bit Linux version. I am wondering how this can be resolved. Pei

April 21, 2006, 03:20	Harpoon is not ready for OpenF	#51
stefanke Member stefan Join Date: Mar 2009 Posts: 96 Rep Power: 17	Harpoon is not ready for OpenFoam 1.3. But with OpenFoam 1.2 it should work!

April 21, 2006, 05:58	Whats wrong with binary files?	#52
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	Whats wrong with binary files? What does checkMesh say? The OF 1.3 mesh constructors are backward compatible with 1.2 formats so there should be no issue.

April 21, 2006, 06:08	I have tested the new Harpoon	#53
stefanke Member stefan Join Date: Mar 2009 Posts: 96 Rep Power: 17	I have tested the new Harpoon release and there was always the same problem with OF 1.3 (same failure as described above). With OF 1.2 all works fine. So it has definitly something to do with the version of OF and/or the way how the meshes are created in Harpoon so OF is able to read them.

April 21, 2006, 10:42	Could you mail me a small exam	#54
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	Could you mail me a small example mesh from harpoon please?

May 17, 2006, 08:27	I have found out why the harpo	#55
eugene Senior Member Eugene de Villiers Join Date: Mar 2009 Posts: 725 Rep Power: 21	I have found out why the harpoon exported mesh does not work under OF1.3. The boundary file has been written in DOS format and the handling of the DOS characters have changed between 1.2 and 1.3. To fix the problem execute the following command: dos2unix -n[list=1] <newboundaryfile> This works on the test case I received. Could someone please confirm the fix.

June 19, 2006, 08:12	The problem is probably that y	#56
sharc New Member Richard Bardwell Join Date: Mar 2009 Posts: 9 Rep Power: 17	The problem is probably that you are using the single precision version. Harpoon exports the data in double precision

June 19, 2006, 08:20	Use the ASCII export. Should b	#57
sharc New Member Richard Bardwell Join Date: Mar 2009 Posts: 9 Rep Power: 17	Use the ASCII export. Should be fine

June 19, 2006, 09:03	the harpoon export works fine	#58
stefanke Member stefan Join Date: Mar 2009 Posts: 96 Rep Power: 17	the harpoon export works fine with OF1.2 and OF1.3 but as Eugene has already mentioned one have to convert the boundary file (ASCII) from the dos to unix format! I think the following 2 options were very useful in order to use harpoon with OpenFOAM: - boundary file in unix format (instead of dos) - save the exported files as boundary, cells, faces, points and not as xxx.boundary etc.

March 25, 2008, 18:38	I am trying to use Harpoon as	#59
alexandrepereira Senior Member Alexandre Pereira Join Date: Mar 2009 Posts: 155 Rep Power: 17	I am trying to use Harpoon as a mesher for OpenFOAM... i am now using OF 1.4.1 under Ubuntu 7.10 32 bits... Anyone has experience running Harpoon unde Linux x32 Kernel 2.6.x? I can start the gui... and i can mesh geometries, but once i try to export in any format, OpenFoam, Fluent, CFX5, shell states that it cannot get Global nears... and no export file is created... Any hint on what might be happening? Thanks for your time Alex

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