[ICEM] need help to use ICEM CFD as mesher

happy · January 7, 2013, 19:06

Quote:

Originally Posted by Far

I will upload video on youtube to show you step by step procedure.

Dear Far
Could you advise me when you do?
Regards

happy · January 16, 2013, 22:06

Dear Far,,,,,
First of all, thanks.
Second, I used Re14 to conduct the simulations; however, when I try to increase the number of meshing, I got something stranger where the mesh not unform completely. If you do not mind, see attached file and please tell me your suggestions for its cause.
Regards,
Happy

mohw2002 · January 17, 2013, 01:05

Hi For Everyone
Please can you help me, I am working on my geometry by ICEM-CFD I want to mesh it with Hexa meshing, but I cant because my geometry is complex (pipe 0.022 mm diameter 1300 mm, ten perforations each one has 6mm diameter normal to the surface and the other ten inclined by 30 degree with the z axis. These are perforations held on the first part of the pipe i.e. at 600mm but the other part is blank), I want to do it by hexa because I need to draw the wall shear stress at the wall. I did that by tetra but the result coming from that one the line like a zig-zag.
Thanks in advanced.

Far · January 17, 2013, 03:46

Quote:

Originally Posted by happy

Dear Far,,,,,
First of all, thanks.
Second, I used Re14 to conduct the simulations; however, when I try to increase the number of meshing, I got something stranger where the mesh not unform completely. If you do not mind, see attached file and please tell me your suggestions for its cause.
Regards,
Happy

You need to align vertices to get the smooth mesh

Far · January 17, 2013, 03:47

Quote:

Originally Posted by mohw2002

Hi For Everyone
Please can you help me, I am working on my geometry by ICEM-CFD I want to mesh it with Hexa meshing, but I cant because my geometry is complex (pipe 0.022 mm diameter 1300 mm, ten perforations each one has 6mm diameter normal to the surface and the other ten inclined by 30 degree with the z axis. These are perforations held on the first part of the pipe i.e. at 600mm but the other part is blank), I want to do it by hexa because I need to draw the wall shear stress at the wall. I did that by tetra but the result coming from that one the line like a zig-zag.
Thanks in advanced.

Show some pics...

mohw2002 · January 19, 2013, 15:52

hi for all
I tried many times to mesh by hexa for my geometry by ICEM-CFD but I faced difficult with it, sometimes I got the solution but without prism layer but I faced the same problem especially when I draw the geometry (quarter pipe), the problem at the CFX-solver as an error below please can anyone help me for hexa and with this problem.

ERROR #002100013 has occurred in subroutine Chk_Splane. |
| Message: |
| The symmetry boundary condition requires that the boundary patch |
| mesh faces form a plane or axis. However, face set 24 in the |
| symmetry boundary patch |
| |
| SYMMETRY1 |
| |
| is not in a strict plane, which means that at least one of its |
| faces is not parallel to the others. To make the solver run |
| you can do one of the following: |
| |
| (1) Make sure that this symmetry boundary patch is in a plane or |
| axis by checking and regenerating the mesh. |
| (2) If the symmetry boundary patch is an axis rather than a |
| plane, change the tolerance of the degeneracy check by |
| increasing the value of the Solver Expert Parameter |
| 'degeneracy check tolerance' (the default value is 1.e-4). |
| (3) Increase the value of the Solver Expert Parameter |
| 'vector parallel tolerance' (the default value is 1 deg.). |
| Note that the accuracy of the symmetry condition may decrease |
| as the tolerance is increased. This is because the tolerance |
| is the number of degrees that a mesh face normal is allowed |
| to deviate from the average normal for the entire face set.

Far · January 20, 2013, 01:10

it clearly says that symmetry plane is not in the x-y, x-y or z-x plane.

mohw2002 · January 20, 2013, 04:08

Quote:

Originally Posted by Far

it clearly says that symmetry plane is not in the x-y, x-y or z-x plane.

this my geometry

happy · January 21, 2013, 03:49

Hi there
can anyone show me if CFD post can draw customize plane to cover my split channel see fig 1?
pls, see the attached of top view of my configuration.
I would like to improve the plane which appear in fig 2 to conver all area within split channel at Y= value?
Any input can help.
Regards
Happy
fig 1.jpg

fig 2.jpg

happy · January 21, 2013, 04:13

Quote:

Originally Posted by happy

Hi there
can anyone show me if CFD post can draw customize plane to cover my split channel see fig 1?
pls, see the attached of top view of my configuration.
I would like to improve the plane which appear in fig 2 to conver all area within split channel at Y= value?
Any input can help.
Regards
Happy
Attachment 18336

Attachment 18337

Hi again
another question, can the CFX user draw half circule within CFX-post?
Does from file option can help to define my plane? If so explained to m please.
Regards
Happy

Far · January 21, 2013, 06:04

Quote:

Originally Posted by mohw2002

this my geometry

I cannt see any thing!!!

Far · January 21, 2013, 06:06

Quote:

Originally Posted by happy

Hi again
another question, can the CFX user draw half circule within CFX-post?
Does from file option can help to define my plane? If so explained to m please.
Regards
Happy

I can't get your point exactly

happy · January 21, 2013, 18:48

Quote:

Originally Posted by Far

I can't get your point exactly

Hi Far
I meant that define the plane normally (see fig 2) cannot cover whole surface area of flow within split channel because it is not circular totally.
My question is does CFX-post draw customized plane (see fig 3)?
If so could you show me the option to do so?
If CFX-post cannot and another softwrae can do, tell me about it, please.
fig 3.jpg

Regards
Happy

happy · January 23, 2013, 19:55

Quote:

Originally Posted by happy

Hi Far
I meant that define the plane normally (see fig 2) cannot cover whole surface area of flow within split channel because it is not circular totally.
My question is does CFX-post draw customized plane (see fig 3)?
If so could you show me the option to do so?
If CFX-post cannot and another softwrae can do, tell me about it, please.
Attachment 18376

Regards
Happy

Hi all
I did it
Regrads
Happy

January 21, 2013, 03:49	drawing customised plane	#29
happy Senior Member Safia Join Date: Oct 2010 Location: Australia Posts: 161 Rep Power: 15	Hi there can anyone show me if CFD post can draw customize plane to cover my split channel see fig 1? pls, see the attached of top view of my configuration. I would like to improve the plane which appear in fig 2 to conver all area within split channel at Y= value? Any input can help. Regards Happy fig 1.jpg fig 2.jpg

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January 17, 2013, 01:05		#23
mohw2002 New Member Mohammed Join Date: Oct 2012 Posts: 27 Rep Power: 13	Hi For Everyone Please can you help me, I am working on my geometry by ICEM-CFD I want to mesh it with Hexa meshing, but I cant because my geometry is complex (pipe 0.022 mm diameter 1300 mm, ten perforations each one has 6mm diameter normal to the surface and the other ten inclined by 30 degree with the z axis. These are perforations held on the first part of the pipe i.e. at 600mm but the other part is blank), I want to do it by hexa because I need to draw the wall shear stress at the wall. I did that by tetra but the result coming from that one the line like a zig-zag. Thanks in advanced.

January 19, 2013, 15:52		#26
mohw2002 New Member Mohammed Join Date: Oct 2012 Posts: 27 Rep Power: 13	hi for all I tried many times to mesh by hexa for my geometry by ICEM-CFD but I faced difficult with it, sometimes I got the solution but without prism layer but I faced the same problem especially when I draw the geometry (quarter pipe), the problem at the CFX-solver as an error below please can anyone help me for hexa and with this problem. ERROR #002100013 has occurred in subroutine Chk_Splane. \| \| Message: \| \| The symmetry boundary condition requires that the boundary patch \| \| mesh faces form a plane or axis. However, face set 24 in the \| \| symmetry boundary patch \| \| \| \| SYMMETRY1 \| \| \| \| is not in a strict plane, which means that at least one of its \| \| faces is not parallel to the others. To make the solver run \| \| you can do one of the following: \| \| \| \| (1) Make sure that this symmetry boundary patch is in a plane or \| \| axis by checking and regenerating the mesh. \| \| (2) If the symmetry boundary patch is an axis rather than a \| \| plane, change the tolerance of the degeneracy check by \| \| increasing the value of the Solver Expert Parameter \| \| 'degeneracy check tolerance' (the default value is 1.e-4). \| \| (3) Increase the value of the Solver Expert Parameter \| \| 'vector parallel tolerance' (the default value is 1 deg.). \| \| Note that the accuracy of the symmetry condition may decrease \| \| as the tolerance is increased. This is because the tolerance \| \| is the number of degrees that a mesh face normal is allowed \| \| to deviate from the average normal for the entire face set.

January 20, 2013, 01:10		#27
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	it clearly says that symmetry plane is not in the x-y, x-y or z-x plane.