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Old   March 25, 2012, 08:03
Unhappy trouble with fluentmeshtofoam
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Hi ,friends.I use fluent to get a .cas file with ascii format.when i use the command of fluent3DMeshToFoam Lask.cas.I get the following error:--> FOAM FATAL ERROR:
Do not understand characters: /
on line 157058

From function fluentMeshToFoam::lexer
in file fluent3DMeshToFoam.L at line 747.

FOAM exiting
I do not understand why there are so many error about the characters.Please tell me how to get rid of it if you know.Thanks a lot.
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Old   March 25, 2012, 08:37
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Hi,

fluent3DMeshToFoam takes the fluent ".msh" mesh file as an input, not the fluent case file.

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Old   March 25, 2012, 08:50
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when i use .msh file ,i also get trouble:--> FOAM FATAL ERROR:
Do not understand characters:
on line 1066402

From function fluentMeshToFoam::lexer
in file fluent3DMeshToFoam.L at line 747.

FOAM exiting

can you tell me how to get rid of it.thanks a lot.
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Old   March 25, 2012, 09:00
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It should work with the mesh ".msh" file.
Essentially fluent3DMeshToFoam is complaining that it doesn't recognise the character on line 1066402 of the msh file, is it possible that the msh file is corrupt?

It seems like quite a large mesh, maybe try converting a simple small mesh and see if it works.

Or you can upload a msh you are having trouble with here and I can try it out.

Philip
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Old   March 25, 2012, 09:06
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I am so sorry i do not know how to upload my case on it.Can you tell me ?Thanks a lot.
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Old   March 25, 2012, 09:15
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I saw some people use dos2unix,is my file's format wrong?
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Old   March 25, 2012, 09:17
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if you are free.i can give you my case through e-mail.
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Old   March 25, 2012, 09:45
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You do not need to convert the file with dos2unix.

You can create a dropbox account (www.dropbox.com), then upload the msh file and post the public link to the file here.

Did you try making a small simple msh file?

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Old   March 25, 2012, 10:04
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No,becase i am in the ubuntu system.and i think the number of the mesh should not the matter ,but i will try it tommrow.i will also upload my mesh to the dropbox.
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Old   March 26, 2012, 03:29
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Are you converting an ASCII file? Binary won't work (I know, I wrote it).

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Old   March 26, 2012, 07:23
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Yes,i get .cas file through fluent,and i delete the binary.I make my number of mesh become smaller,it works.Can you find the reason? thanks a lot.
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Old   March 26, 2012, 07:24
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I make a small simple mesh .it works. can you find the reason?thanks a lot.
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Old   March 26, 2012, 07:52
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hei@ge,

There may be a number of reasons why your large mesh is not being converted, possibly there are errors in your large mesh, or maybe your large mesh is not being written correctly, or maybe the mesh file is being corrupted if it is not copied properly.

I would check in fluent that your mesh does not have errors. Also you could try upload a dropbox link to your mesh here and I can have a look at it.

Philip
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Old   March 26, 2012, 07:56
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Thank you very much for your sincere help.I do not have a dropbox. and i am in the ubuntu,can you give me your e-mail adreass if you are free.Thanks again.
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Old   March 26, 2012, 08:04
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i try to get a account of dropbox ,but i fail.
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Old   March 26, 2012, 08:13
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the following is the information for Grid Check in fluent
Grid Check
Domain Extents:
x-coordinate: min (m) = -1.500000e+003, max (m) = 6.894960e+002
y-coordinate: min (m) = -1.199900e+003, max (m) = 1.500000e+003
z-coordinate: min (m) = 0.000000e+000, max (m) = 1.500000e+003
Volume statistics:
minimum volume (m3): 2.909061e+003
maximum volume (m3): 4.902152e+004
total volume (m3): 8.715825e+009
Face area statistics:
minimum face area (m2): 1.248621e+002
maximum face area (m2): 2.106185e+003
Checking number of nodes per cell.
Checking number of faces per cell.
Checking thread pointers.
Checking number of cells per face.
Checking face cells.
Checking bridge faces.
Checking right-handed cells.
Checking face handedness.
Checking face node order.
Checking element type consistency.
Checking boundary types:
Checking face pairs.
Checking periodic boundaries.
Checking node count.
Checking nosolve cell count.
Checking nosolve face count.
Checking face children.
Checking cell children.
Checking storage.
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Old   March 26, 2012, 09:04
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hei@ge,

I am not familiar with fluent grid check.

If you go to www.dropbox.com, you can create an account for free using your email address. then upload your mesh and post a public link to it here.

Philip
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Old   March 26, 2012, 21:16
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https://dl-web.dropbox.com/u/69253136/Lask.cas,this is my .cas file.please help me to check it when you are free.Thanks again.
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Old   March 27, 2012, 01:01
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Hi,bigphil,Thanks very much for your help.I get another .cas file which also has a large number of mesh. To my surprised ,it works.but i do not know the reason. do you have a look at my case? I hope you can get the reason.thanks again.
My English is so so.
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Old   March 27, 2012, 04:46
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Quote:
Originally Posted by hei@ge View Post
https://dl-web.dropbox.com/u/69253136/Lask.cas,this is my .cas file.please help me to check it when you are free.Thanks again.
This mesh converts correctly for me using fluent3DMeshToFoam in OpenFOAM-1.6-ext.

I am not sure why some of your meshes convert correctly and some do not. Just make sure the mesh files are copied properly when moving them.

Philip
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