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francis1 April 17, 2013 21:55

Meshing 2D
1 Attachment(s)
Hi all,

From the attachment, I face some problem in meshing the top part of the channel. I am interested in meshing 2D, thus I would like to mesh the top part of the channel as a single rectangular cell instead of a rectangular cell containing two triangles, as shown from the attachment. Any help on this is much appreciated. Thanks and looking forward to your response.


jrunsten April 18, 2013 05:22

Look into sweep meshing. One element in sweep direction

francis1 April 18, 2013 07:26

Thanks for the reply. I am also interested to apply inflation near the wall. The sweep method seems not compatible with inflation method, may I know is there any alternative way to do it?

jrunsten April 18, 2013 07:28

Right click on the sweep method and choose "inflate this method".
When sweeping you inflate a face from an edge, then sweep that face through the body. This is not the same as other methods where you inflate a body by selecting the wall surfaces.

ok___ko April 19, 2013 08:06

Hi, could you explain why we need block after drawing the geometry, before the mesh? Thanks

Far April 19, 2013 17:08

Blocking means you are subdividing your volume into smaller blocks which can be mapped mesh.

ok___ko April 19, 2013 17:11

OK. Thank you for your reply.

francis1 April 20, 2013 07:15

Thank Josef!

ok___ko April 20, 2013 10:34

after pre-mesh in ICEM

I met a problem after I finish my mesh. After I pre-mesh it, and I 'loading from block', in the command window, it says
'Unloaded unstructured domain
--- Unloading existing mesh
Loading domain "hex.uns" ...
domain has 0 nodes'

Does anyone know why, and where I have made the mistake? I am looking forward to your reply. Thank you.

Far April 20, 2013 10:42

Right click on premesh and choose option "convert to unstructured mesh"

tita I would suggest you to open new thread on your problem.

ok___ko April 20, 2013 11:02

well, I am sorry for that, I am new here, but I know how to open new thread now.

And thanks for your answer,it has nodes now, but hexas=0, and I cannot import the mesh into FLUENT, and in the fluent command, it says 'Error: Null Domain Pointer'.
Do you know why?

Far April 20, 2013 11:04

It is 2d case? Did you choose 2d option while exporting mesh? are you opening this mesh in 2d version of Fluent?

ok___ko April 20, 2013 11:18

yes, I have already choose 2D in the FLUENT. But it still cannot be imported.

knotbhp September 7, 2013 05:44

hi everybody,

could you inform detailly about sweep mesh ?,and also when apply inflation layer, skewness increases, what do i do now?


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