[Ivooo]

Thanks for the program and the repository! It works great. Btw ParaFoam segfaults when setting an odd number of cells in the double-grading direction, I didn't notice until a colleague reminded me to check that, then it worked

[pjohannes183]

works like a charm, thanks to all contributors!

[vonboett]

I got the same Floating point exception like Omkar if calling blockMesh after updating the files using hg clone, and blockMeshDoubleGrading is an unknown command, so maybe for clarifying: calling ./Allwmake in the src/mesh folder or at top level? Works with OF 2.1.x?
However I think ist a great tool, especially if one has to deal with internal boundaries like baffles it is cool to avoid half of the blocks.

[akidess]

Albrecht, the executable name is blockMeshDG. I will make that more clear on the repository site.

[Pekka]

Hi Foamers,

Thanks for DG version!

One problem found when the O-grid type block mesh was generated. BlockMeshDG switch the grading opposite if midpoints on the block edges are used. This problem does not occur if blocks coordinate system is in same direction, but on the O-grid blocks coordinate systems is not possible keep on same direction. Any ideas fix this problem?

Attached case can be run by blockMeshDG on 1.6-ext.

BR/Pekka

[sasanghomi]

Originally Posted by Bernhard

There were some changes between 1.7.1 and the version that this utility was designed for. I attached a version that worked for me in 1.7.1, based on the blockMesh of 1.7.1 and some code snippets from the above posted files.

I want to compile this utility on OP 1.6-ext , Do you have the source code???

please help me...

Thanks,
Sasan.

[wyldckat]

Hi Sasan,

Attached is the modified version for 1.6-ext, based on the instructions from post #3: http://www.cfd-online.com/Forums/ope...tml#post238922

Instructions:

1. Download the attached file.
2. Uncompress it:
   

   tar -xf blockMeshDG-1.6-ext.tar.gz

3. Build it:
   

   cd blockMeshDG-1.6-ext
   wmake

I tested with the case from post #25.


Best regards,
Bruno

[sasanghomi]

Hi Bruno,

works like a charm.
Thank you very much.

Sasan

[Pekka]

I found the solution to my problem. It's simpler than anybody can guess.

When arc is used on the block edges it is a matter of the order of arc end points. So the grading direction can be changed by switching the end points order:

arc 6 7 ( 1.375 1 1.2 )  => arc 7 6 ( 1.375 1 1.2 )

BR/Pekka

[greenleader]

Disappointed to see that blockMeshDG still does not seem to be part of the standard distribution. Are the developers not aware of it? How do we make them aware of it? As an OF newbie it was the first thing I looked for when I was creating my first mesh!

About to download and try it for the first time (OF V2.1.1).....

Later:
Worked perfectly, but as pointed out by others earlier, you must make sure you specify an even number of cells. I found that if its an odd number, although blockMesh works fine, checkMesh crashes, as does paraFoam.

[wyldckat]

Greetings Steve,

Originally Posted by greenleader

Disappointed to see that blockMeshDG still does not seem to be part of the standard distribution. Are the developers not aware of it? How do we make them aware of it? As an OF newbie it was the first thing I looked for when I was creating my first mesh!

• They have already been made aware of this: http://www.openfoam.org/mantisbt/view.php?id=457 - but it has a low priority.
• They already provide the means for people to contribute with source code: http://www.openfoam.org/contrib/unsupported.php
• But I think the problem right now is that the original author of the modifications made for "blockMeshDG" should be the one to submit them. The other possibility is for someone else to write from scratch a similar algorithm and submit it according to the specifications made in the previous link.

In the mean time, this is a (good?) way to make new and old OpenFOAM users think a bit about exploring what the community has to offer and hopefully it will eventually reach critical mass and be part of the official code .

Best regards,
Bruno

[greenleader]

Thanks for that Bruno, appreciate you taking the time to reply!
Regards
Steve

[OpenF]

Hi Foamers,

I tried to install blockMeshDoubleGrading but after wmake I get this error :

/opt/openfoam220/wmake/wmake: line 222: make: command not found
/opt/openfoam220/wmake/wmake: line 223: make: command not found
wmake error: file 'Make/linux64GccDPOpt/objectFiles' could not be created in /tmp/blockMeshDG-1.6-ext

and I don't know why. I already succeeded to install this program with another computer..

thanks

Anselme

[akidess]

Anselme, your error is not related to blockMeshDG, but to your OpenFOAM installation. I'm guessing you can't compile any other program either.

[wyldckat]

Greetings Anselme,

As Anton indicated, you're missing the tools needed for compiling. Check the instructions shown in the section "System Requirements" for the "Source Pack" instructions: http://www.openfoam.org/download/source.php#x6-29000 - that section is all you need to follow, since you've already installed OpenFOAM.

Best regards,
Bruno

[OpenF]

Thanks a lot for your answer wyldckat and akidess, it works ! Now I would like to set a parabolic velocity inlet profile but I can't get the sources on

svn checkout http://openfoam-extend.svn.sourceforge.net/svnroot/\
openfoam-extend/trunk/Core/OpenFOAM-1.5-dev/src/finiteVolume/\

fields/fvPatchFields/derived/parabolicVelocity/

because of that http://openfoamwiki.net/index.php/Main_Page

Someone has an idee ?

Best regards,
Anselme

[akidess]

Anselme, you can use Swak4Foam/GroovyBC. If you run into problems in doing so please start a new thread so we can keep this one focused on blockMeshDG.

- Anton

[immortality]

Hi all
how can find a 2.2.0 version of blockMeshDG?

[wyldckat]

Hi Ehsan,

Originally Posted by immortality

how can find a 2.2.0 version of blockMeshDG?

Simply follow the instructions from here: http://openfoamwiki.net/index.php/Contrib_blockMeshDG - I suggest that you follow the instructions for the zip version.

Best regards,
Bruno

[akidess]

Bruno, did you ever test it on 2.2? If so, we could add the 2.2 template to the wiki...