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himanshu28 October 22, 2012 14:03

problem in HEX-tet mesh generation in ICEM
1 Attachment(s)

i am attaching the geometry for which i have generated elementary mesh in icem but i want tet mesh on the surface and remaining region i want hex mesh. I am new to ICEM.
please help me by guiding the steps of generating a hybrid mesh and providing a link for and good ICEM tutorial .

diamondx October 22, 2012 14:24

steps for converting quad to tetra.
1- go to "edit mesh" tab, you find convert mesh icon there
2- select convert quad to tetra.
now you have to select only the quad in that surface this is how you will do it:
select only one quad, then use the filter "select all items attached... up to a curve". you will then have all the quad surrounded by a curve selected. middle mouse button that and you will get your tetra.

himanshu28 October 23, 2012 06:52

Hi Ali,

Thanks for the help ,I am unable to get good ICEM tutorial which include all the key ideas how to generate mesh using ICEM if you have any material about it or you know any site please do reply. and you can also mail to me at

Himanshu sharma

diamondx October 23, 2012 20:26

have you got access to customer portal in ansys's website ?

himanshu28 October 24, 2012 08:54

i am a student at IIT using the non commercial student version of ansys.

himanshu28 October 24, 2012 11:04

2 Attachment(s)

I have generated have generated this hexahedral mesh but due to transition in the geometry i am not able to control becoz i think i am not able to connect the vertex with the curve. please can you help me with the procedure doing it i have attached the block picture of the geom and i am unable attaching the ICEm file please help Becoz i am very new to ICEM.:confused::confused::(Attachment 16366

Attachment 16367

diamondx October 24, 2012 14:57

is there a blocking there ? can you share your project ? i'll take a look at it

Far October 24, 2012 15:13


Originally Posted by diamondx (Post 388356)
is there a blocking there ? can you share your project ? i'll take a look at it

Is seems that there is blocking but he is generating mesh from compute mesh panel.

himanshu28 October 26, 2012 08:04

MY geom.prj file
1 Attachment(s)
Hi Ali,
i have attached my project icem file i am stucked in block genration for my geometry please have a look.........:( :(

Far October 26, 2012 08:26

attach tin and blk

himanshu28 October 26, 2012 08:55

new attachement
1 Attachment(s)
hi far,

I have attached the .tin and .blk and prj file in folder.

himanshu28 October 26, 2012 09:18


Originally Posted by Far (Post 388675)
attach tin and blk

Hi ,

Sir do you have any tutorial for iCEm bcoz i am new to it and unable to understand the geometry is quite simple but its the toughest for me i am struggling alot...

energy382 October 26, 2012 10:49

2 Attachment(s)
good luck with your project

himanshu28 October 26, 2012 11:03

Thank you
1 Attachment(s)
hi christoph thanx...:) :) . but please tell me how can i improve upon my skills in ICEM do u have any good tutorial...and if i want to add prism layer near the wall so what procedure i need to follow..... i have done some work also please see that i am attaching my jpegs but i am stucked again in how to remove the bad elements as you would see in the figure i have attached :confused:

Far October 26, 2012 12:43

1 Attachment(s)
No need to add prisms if you want all Hexa. See this one as well.

Far October 26, 2012 13:56

Ok. Here it is prism + tetra mesh. Very few clicks and done (less than one minute)

himanshu28 October 27, 2012 14:09

unable to generate volume mesh
how to convert this into Hex -volume mesh so that i can use this in the CFX solver i have genereted the mesh but while i am saving the file in .uns formate it showing me error again and again......i am stucked again....:rolleyes: so... please help again...!!!!

Far October 27, 2012 14:24

You are talking about HEXA meshing previously done!!!

1. Create inlet, outlet, and wall surfaces or whatever as deemed necessary. This is done on left pan and right click on part and then create part.

2. Dont forget to create the unstructured mesh by right click on the premesh and then create unstructured mesh.

3. Go to output panel and do following

a) select the solver ANSYS CFX
b) Do not set the boundary conditions
c) output the mesh

4. Open CFX pre

5. Make new case with general settings

6. Import mesh and in the import mesh panel choose the ICEM mesh (*.cfx, *.cfx5). Also choose the appropriate mesh units.

amin_gls October 28, 2012 02:54

hi if i have time sent to you a tutorial . i am new like you in icem cfd .

Far October 28, 2012 05:19

You need tutorials on ICEM CFD? Some of them are sent through pm

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