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[GAMBIT] gambit error limited!!!

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Old   May 25, 2011, 11:20
Default gambit error limited!!!
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Hii,
I would like to know does the mesh of GAMBIT is limited? because when i meshed the domain I get the folloming error :

ERROR: Unable to write 32505856 bytes of data to descriptor 8.

-Instead -1 bytes were written

mesh of volume contains 8000000 highly skwed elements

Thanks for your help
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Old   May 27, 2011, 03:10
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decompose your domain into subdomains (splits)
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Old   May 27, 2011, 04:32
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Can you show me how i can decompose my domain (brick 3D)?? thanks




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decompose your domain into subdomains (splits)
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Old   May 27, 2011, 04:58
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show me your domain
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Old   May 27, 2011, 05:08
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My domain is a brick3D: [2cm, 1cm, 1cm], and i want to mesh this domain with an interval size of 0.005 along the x, y and z directions,



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show me your domain
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Old   May 27, 2011, 05:19
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like that for instance
Sans titre.png
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Old   May 27, 2011, 08:29
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Can you sent me this in form ".msh" plaise



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like that for instance
Attachment 7839
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Old   May 27, 2011, 08:36
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There is no mesh. It is only the volume decomposition.
I advice you to do it yourself, but I give you the journal file...
*********
volume create width 2 depth 1 height 1 brick
face cmove "face.3" multiple 1 offset 1 0 0
face cmove "face.1" multiple 1 offset 0 0 0.5
face cmove "face.2" multiple 1 offset 0 0.5 0
volume split "volume.1" faces "face.9" connected
volume split "volume.1" faces "face.8" connected keeptool
volume split "volume.2" faces "face.8" connected
volume split "volume.3" faces "face.7" connected keeptool
volume split "volume.1" faces "face.7" connected keeptool
volume split "volume.2" faces "face.7" connected keeptool
volume split "volume.4" faces "face.7" connected
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Old   May 27, 2011, 08:53
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Ok thanks, i'll test this journal file

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Originally Posted by -mAx- View Post
There is no mesh. It is only the volume decomposition.
I advice you to do it yourself, but I give you the journal file...
*********
volume create width 2 depth 1 height 1 brick
face cmove "face.3" multiple 1 offset 1 0 0
face cmove "face.1" multiple 1 offset 0 0 0.5
face cmove "face.2" multiple 1 offset 0 0.5 0
volume split "volume.1" faces "face.9" connected
volume split "volume.1" faces "face.8" connected keeptool
volume split "volume.2" faces "face.8" connected
volume split "volume.3" faces "face.7" connected keeptool
volume split "volume.1" faces "face.7" connected keeptool
volume split "volume.2" faces "face.7" connected keeptool
volume split "volume.4" faces "face.7" connected
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Old   May 27, 2011, 22:25
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Also, are you 32 bit or 64 bit...

You are not going to get 32 million cells out of 32 bit Gambit...

(the 32 million was just a coincidence... nothing to do with 32 bit... I don't think you could get 15 million cells out of 32 bit gambit...)
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Old   May 30, 2011, 03:48
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I m 32 bit not 64

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Also, are you 32 bit or 64 bit...

You are not going to get 32 million cells out of 32 bit Gambit...

(the 32 million was just a coincidence... nothing to do with 32 bit... I don't think you could get 15 million cells out of 32 bit gambit...)
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Old   June 1, 2011, 01:45
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I managed to get a 10 million cells mesh on 32 bit version.
No problem untill I wanted to export the mesh.
That's the problem..
I had to switch on linux64 bit partition with 8GB Ram. Then problem has been fixed
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Old   June 1, 2011, 09:54
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I also get the problem when I export the mesh .. Luckily for you I have note Linux 64! i have the 32bits (windows and linux)

Thanks for information MAX


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I managed to get a 10 million cells mesh on 32 bit version.
No problem untill I wanted to export the mesh.
That's the problem..
I had to switch on linux64 bit partition with 8GB Ram. Then problem has been fixed
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Old   October 9, 2012, 07:43
Default related problem
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Hello,

I use 64 bit linux version of Gambit 2.3.16.
I manage to create a big mesh, say, more than 12-13 mln, but the error occurs when I try to convert it to .neu. And I use this format further with some in-house code.

After completing meshing it starts to write the Neutral file, for example:

...
"Writing 14046777nodes, 13600000 elements, 1 group and 0 bc sets to GAMBIT Neutral file test_new.neu.
ERROR: Error writing to file at line 38008498
/ Closing readfile ..." etc

In the next message I attach a .jou file. You can run it from the command line as follows
gambit -inp name.jou
although I use alias:
alias gambit='FLUENT_ARCH=lnx86 gambit -x11'

I would be happy to any help since I fill uncomfortable to switch to another meshing tool.

Thank you for help.

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Old   October 9, 2012, 07:44
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It is not very clean though

Journal File for GAMBIT 2.3.16, Database 2.3.14, lnx86 SP2006033020
/ Identifier "default_id"
/ File opened for write Thu Oct 7 10:45:59 2010.
volume create width 1 depth 1 height 1 brick
undo begingroup
edge picklink "edge.4" "edge.12" "edge.1" "edge.9"
edge mesh "edge.9" "edge.1" "edge.12" "edge.4" successive ratio1 1 intervals \
100
undo endgroup
undo begingroup
edge picklink "edge.8" "edge.7" "edge.5" "edge.6"
edge mesh "edge.6" "edge.5" "edge.7" "edge.8" successive ratio1 1 intervals \
100
undo endgroup
undo begingroup
edge picklink "edge.3" "edge.2" "edge.10" "edge.11"
edge mesh "edge.11" "edge.10" "edge.2" "edge.3" successive ratio1 1 intervals \
80
undo endgroup
volume mesh "volume.1" map size 1
volume cmove "volume.1" multiple 16 unlinkmesh offset 0 0 1
solver select "Generic"
export gambit "test_new.neu"
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Old   October 9, 2012, 09:36
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No problem for me to export your *.neu file
It generates a 2.3GB file

PS: I generates it from GUI >> File/Run Journal...
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Old   October 9, 2012, 10:17
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Thanks for spending your time, -mAx-.

Than i have another question. Where did you download your gambit? is it legal?
Because I use a cracked one. Which version do you have?

Thanks again
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Old   October 10, 2012, 01:06
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I have legal license (2.4.6)
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Old   October 10, 2012, 05:50
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Hello All,

I want to do analysis of heat transfer from water flowing through pipes submerged inside concrete. I am modelling in GAMBIT and wish to analyse it on Ansys FLUENT.

Can anybody help me out, how to model and simulate?

Does any tutorials exist?
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Old   October 10, 2012, 12:17
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Hi,

You cas see this exemple,

http://fr.scribd.com/doc/49980814/47...luent-Training
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