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[ICEM] problem when reading mesh

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Old   April 19, 2013, 07:45
Default how to generate a mesh
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Quote:
Originally Posted by diamondx View Post
When you convert the mesh to unstructured, under edit tab run check mesh, to look for possible error
Hi,I have draw a geometry in ICEM, how could I block it and generate a mesh? Could you give me your email address so that I could send you the specific question.
I am looking forward to your reply ASAP. Thanks.
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Old   April 19, 2013, 07:50
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Dear okko, please have a look at this thread:
Before you start a thread, see if you can find answers here
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Old   April 19, 2013, 07:57
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after I draw a geometry in ICEM, how could I block it and generate a mesh? what is block used for? I am looking forward to your reply ASAP. Thanks .
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Old   April 19, 2013, 08:00
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thanks for your reply. Yes, I have saw the extra resourses, but I still don't know how could I block and what is the aim for block?
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Old   April 19, 2013, 08:00
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Hi, I can highly recommend these videos (in my link is 1/3, but you will find 2 others on youtube).
http://www.youtube.com/watch?v=tYrbScUH9RE
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Old   April 22, 2013, 10:18
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hello again!

I'm still fighting with ICEM...
I have a new kind of problem: my interior faces are not seen by fluent as interior but as wall. In ICEM, these interior faces are in a same part, named "INTERIOR" and for the boundary conditions, I give the "interior" conditions. But it is still not ok.
Any idea?
Thanks again.
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Old   April 23, 2013, 09:15
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hello everyone,

I am, of course, still "fighting" wit ICEM.
So, I've divided my domain in several parts.
I have encountered several problems:
- For creating each part, I start from the entire geometry and I delete all the parts I don't need. But when I click to have the figure centered in the screen it remains at a corner, as if there were still some remaining parts that I can't see.
- when splitting a block, very often, the common face is not seen as "interior" but "wall" by Fluent.
and, last but not least :
- one of my part consists in a cylinder but, just 1/8 of it, so, I have a triangle...How can I deal with that?

Thanks for any help and sorry to bother again !
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Old   April 23, 2013, 09:17
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PS: are there some good tutorials for meshing (O-grid or Y-grid). At work, I can't read video on youtube...
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Old   April 23, 2013, 09:52
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Hi, I will try to answer the questions I can:
1) If you change the interior faces to "interior" in fluent, I never had problems with that. What do you mean by "But it is still not ok"?
2) I sometimes have such problems, when I create new parts and put some blocks into it. I have never encountered problems. Maybe VORFN block stuff? I have no clue what they mean...
3) When splitting a block, the common face is inside the domain. There is no connection of this face to fluent, exept you create a part and put it into it. How comes you even see them in fluent?
4) Look at the link far showed in this thread and go to post No. 10:
o-grid generation in ANSYS MESHING
You can see how you must create the blocks for triangle shape.
5) Tell your company IT to open fucking youtube for you. It's for work not for Justin Bieber...
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Old   April 23, 2013, 10:17
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Hi Rodriguez,

thanks a lot for your reply.
1 . So, about my "interior" problem : "it's still not ok" because when importing into fluent, these parts appear as wall and there's no way in fluent to change to interior. But I think it's ok now : when creating the block, I was taking all the sufaces, including these interior surfaces; I've just tried without selecting them, and fluent did not see them.
2. I still don't know why there seem to be some other things remaining. I very often have problems with VORFN I think because sometimes, when clicking on "pre-mesh", appear thousand of yellow blocks...
4. I will star with O-grid now, thanks for the link
5. Well, it's not about youtube, it's just that the computers where we have ANSYS installed are old and not updated...and of course, we don't have root password to update or install anything new...so I have a nice "missing plugin message" when trying to read video :-)
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Old   April 23, 2013, 10:25
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1) Why do you even see the VORFN blocks? I always switch them off. I have never used them at all and also don't know what they are good for.
Also: What are you doing with the surfaces, I don't get it. If you create your first block, you select a name and that's the part where all the following "child" blocks will be in. What do you mean by "I was taking all the surfaces"?

I don't know any ICEM tutorials. When I started I watched the video I linked above. That gave me a good idea about many things in ICEM. The rest I learned by miserably failing and trying again and again...
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Old   April 23, 2013, 11:11
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Quote:
I still don't know why there seem to be some other things remaining. I very often have problems with VORFN I think because sometimes, when clicking on "pre-mesh", appear thousand of yellow blocks...
make sure the points, the curves the surfaces and the bodies are all checked, and all your part are checked too
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Old   April 23, 2013, 13:31
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HI Rodriguez and Diamondx,

I have watched the video (o-grid generation in ANSYS MESHING , post10). It's really interesting, but I don't get how the quarter O-grid "appeared".
I'm sending you a file, a part of the entire geometry, where I have this problem of figure in the corner of the window when I use the tool "fit window". I have checked the geometry in Geometry/Repair geometry, but nothing.
In this geometry, as you'll see maybe, I have sometimes the problem of many blocks appearing...I don't know where they come from, when it happens, I close ICEM and open it again. I don't use either VORFN, it's always disabled.
And Rodriguez, I use surface for creating blocks when I want the block to be juste around a part of the geometry, to delimitate...
But with all these mistakes (the file I'm sending you is not even read by FLUENT), I think I really don't get "how ICEM works". But I keep on trying.
Thanks again.
Attached Files
File Type: zip Mesh.zip (28.7 KB, 4 views)
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Old   April 24, 2013, 04:16
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Hi,

The problem lies in part "GEOM". For some reason the info says
--------------------------------------------------------------------------
Info for part GEOM
--------------------------------------------------------------------------
Geometry Info ----
Part contains 11 curves
Part contains 39 (23 dormant) points
...

although it only has 9 curves and 6 points. I can't see the others and don't know how to let them appear.
But these quick steps worked:
Make only part "GEOM" visible, by deselecting the others. Now create a new part (right click on "Parts"). Then, chose "Create part by selection". Use "select entities" to select all the 9 lines and 6 dots. Give the new part some name and click on apply. Delete the old "GEOM" part (right click on it) and rename the new part to "GEOM". Here we go.
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Old   April 24, 2013, 04:39
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Hi Rodriguez,

Thanks a lot, I've cancelled all the dormant and unattached points and curves from the ICEM panel and it worked also in this way. Now it's ok for that.
But I still can't read the mesh in Fluent. I've
1. created a block
2. given the pairs of vertices for periodicity
3. associated vertices and curves
4. created a quarter O block
5. cancelled the first block
6. ran check/fix and fix inverted block
7. done the mesh
but when opening it in fluent I have :

Quote:
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x155e716]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x1562588]
/lib64/libc.so.6(+0x33620)[0x7f362f88b620]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x155e716]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Fill_Exterior_Faces+0x539)[0xe6ff39]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x1562588]
/lib64/libc.so.6(+0x33620)[0x7f40b4ca5620]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0xe6bf62]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Fill_Exterior_Faces+0x539)[0xe6ff39]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Create_Neighborhood+0x2fb)[0xe6972b]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Build_Grid+0xfb7)[0x4c87e7]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0xe6bf62]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x687617]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(eval+0x7e5)[0x1573b55]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Create_Neighborhood+0x2fb)[0xe6972b]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Command_Start+0x110c)[0x6befec]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Build_Grid+0xfb7)[0x4c87e7]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Node_repl+0x2e)[0x6bd51e]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x687617]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(main+0x332)[0x10cdba2]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(eval+0x7e5)[0x1573b55]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f362f876b6d]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Command_Start+0x110c)[0x6befec]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x48e59a]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Node_repl+0x2e)[0x6bd51e]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(main+0x332)[0x10cdba2]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f40b4c90b6d]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x48e59a]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x155e716]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x155e716]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x1562588]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x1562588]
/lib64/libc.so.6(+0x33620)[0x7fda62c3b620]
/lib64/libc.so.6(+0x33620)[0x7f08c9cd0620]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Fill_Exterior_Faces+0x539)[0xe6ff39]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Fill_Exterior_Faces+0x539)[0xe6ff39]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0xe6bf62]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0xe6bf62]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Create_Neighborhood+0x2fb)[0xe6972b]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Create_Neighborhood+0x2fb)[0xe6972b]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Build_Grid+0xfb7)[0x4c87e7]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Build_Grid+0xfb7)[0x4c87e7]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x687617]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x687617]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(eval+0x7e5)[0x1573b55]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(eval+0x7e5)[0x1573b55]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Command_Start+0x110c)[0x6befec]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Command_Start+0x110c)[0x6befec]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Node_repl+0x2e)[0x6bd51e]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Node_repl+0x2e)[0x6bd51e]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(main+0x332)[0x10cdba2]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(main+0x332)[0x10cdba2]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f08c9cbbb6d]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7fda62c26b6d]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x48e59a]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x48e59a]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x155e716]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x155e716]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x1562588]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x1562588]
/lib64/libc.so.6(+0x33620)[0x7fd68dd47620]
/lib64/libc.so.6(+0x33620)[0x7f360ee9a620]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Fill_Exterior_Faces+0x539)[0xe6ff39]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Fill_Exterior_Faces+0x539)[0xe6ff39]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0xe6bf62]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0xe6bf62]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Create_Neighborhood+0x2fb)[0xe6972b]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Create_Neighborhood+0x2fb)[0xe6972b]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Build_Grid+0xfb7)[0x4c87e7]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(Build_Grid+0xfb7)[0x4c87e7]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x687617]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x687617]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(eval+0x7e5)[0x1573b55]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(eval+0x7e5)[0x1573b55]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Command_Start+0x110c)[0x6befec]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Command_Start+0x110c)[0x6befec]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Node_repl+0x2e)[0x6bd51e]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(PRF_Node_repl+0x2e)[0x6bd51e]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(main+0x332)[0x10cdba2]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0(main+0x332)[0x10cdba2]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7fd68dd32b6d]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f360ee85b6d]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x48e59a]
/ansys_inc/v130/fluent/fluent13.0.0/lnamd64/3ddp_node/fluent_mpi.13.0.0[0x48e59a]
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Old   April 24, 2013, 04:41
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Can you upload all the ICEM files?
Why did you need to fix something?
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Old   April 24, 2013, 04:55
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well, I just did it in case there could be problems because when I ran the check/fix, it didn't tell me anything...but the first time I did all that, I didn't do any check and the problem was the same, so I did all again with that check/ fix and fix
I send you all the files.
Attached Files
File Type: zip meshF.zip (80.7 KB, 3 views)
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Old   April 24, 2013, 05:15
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I didn't find any problem. This is not the problem of ICEM, check Fluent .

Can you read any other mesh file into Fluent (try some tutorial mesh files comes with Fluent) ?

Do you get this problem with serial fluent or parallel fluent? Are you using Linux or Windows?
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Old   April 24, 2013, 05:22
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Sijal Ahmed Memon (turboenginner@gmail.com)
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try this mesh...
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Old   April 24, 2013, 05:25
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I get
"...
shell 2108 has node 1781 which has no twin
there are problems with the periodicity"

warnings during check mesh. Is that ok? I never did the periodic setup with ICEM. I use FLUENT for that.
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