CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[ICEM] Meshing a curved Pipe 3D

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree3Likes
  • 1 Post By FJSJ
  • 1 Post By FJSJ
  • 1 Post By stuart23

Reply
 
LinkBack Thread Tools Display Modes
Old   October 19, 2013, 15:25
Default Meshing a curved Pipe 3D
  #1
Senior Member
 
Daniel
Join Date: Mar 2013
Posts: 177
Rep Power: 9
Daniel_Khazaei will become famous soon enough
Hello guys

I want to use ICEM to mesh a curved 3D pipe. I am able to mesh it with out any problem, but I have a specific question regarding this mesh.

As you can see in the attachment, I have 3 faces that I want to be completely identical(e.g. edge length, vertex's position and location of inner square and every other things)

Is it possible in ICEM?


regards
Attached Images
File Type: jpg test_1.jpg (57.6 KB, 28 views)
File Type: jpg test_2.jpg (49.2 KB, 22 views)
Daniel_Khazaei is offline   Reply With Quote

Old   October 19, 2013, 15:58
Default
  #2
Senior Member
 
Javi
Join Date: Jan 2013
Posts: 256
Rep Power: 7
FJSJ is on a distinguished road
Hi Daniel,

but.. this faces are not identical? I donīt understand you...
FJSJ is offline   Reply With Quote

Old   October 19, 2013, 16:18
Default
  #3
Senior Member
 
Daniel
Join Date: Mar 2013
Posts: 177
Rep Power: 9
Daniel_Khazaei will become famous soon enough
Quote:
Originally Posted by FJSJ View Post
Hi Daniel,

but.. this faces are not identical? I donīt understand you...
I have made them almost identical manually by moving vertices, but I need them to be identical precisely.

On each faces, you can see 4 oblique edges, 1 inner square(4 edges) and 1 outer square(4 edges).

The outer circle is the same along the tube.

I want these squares and edges to be at the same location on each faces, so when I project faces 1, 2 and 3 on each other, they cover themselves completely.
Daniel_Khazaei is offline   Reply With Quote

Old   October 19, 2013, 16:54
Default
  #4
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,959
Blog Entries: 6
Rep Power: 39
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
use move vertices commands.
Far is offline   Reply With Quote

Old   October 19, 2013, 17:19
Default
  #5
Senior Member
 
Daniel
Join Date: Mar 2013
Posts: 177
Rep Power: 9
Daniel_Khazaei will become famous soon enough
Quote:
Originally Posted by Far View Post
use move vertices commands.
Can you please be more specific? I will describe what I want to do with an example:

you can see 3 vertices in the attached image. I want them to have the same y position while preserving their own x an z position.

Is there any command to do this?


regards
Attached Images
File Type: jpg Capture.jpg (54.3 KB, 11 views)
Daniel_Khazaei is offline   Reply With Quote

Old   October 20, 2013, 05:41
Default
  #6
Senior Member
 
Javi
Join Date: Jan 2013
Posts: 256
Rep Power: 7
FJSJ is on a distinguished road
Yes, sure. You can do that. As Juan says, you need to use move vertex tools. For example:

Go to Blocking -> Move vertex -> Set Location

In Ref. Vertex choose (vertex nš 1 in your picture). Then click on "Modify Y". Finally, in "vertices to set" choose vertex nš2 and nš3. And Apply!!

You can do this with any direction. And, maybe, itīs useful too use "Align Vertices".
Daniel_Khazaei likes this.
FJSJ is offline   Reply With Quote

Old   October 20, 2013, 06:06
Default
  #7
Senior Member
 
Daniel
Join Date: Mar 2013
Posts: 177
Rep Power: 9
Daniel_Khazaei will become famous soon enough
Quote:
Originally Posted by FJSJ View Post
Yes, sure. You can do that. As Juan says, you need to use move vertex tools. For example:

Go to Blocking -> Move vertex -> Set Location

In Ref. Vertex choose (vertex nš 1 in your picture). Then click on "Modify Y". Finally, in "vertices to set" choose vertex nš2 and nš3. And Apply!!

You can do this with any direction. And, maybe, itīs useful too use "Align Vertices".

Thanks for the tip.

Now I have another question. Is it possible to set the position of these vertices locally? (with respect to their own faces)

like having a local coordinate system on the center of each circles (faces) and then modifying the vertices? (this way I can have identical details on each faces, while the global position is different)

As you can see in my geometry, I can only modify the y position with your suggestion, but I also need to modify the z location of vertices.


regards
Daniel_Khazaei is offline   Reply With Quote

Old   October 20, 2013, 07:13
Default
  #8
Senior Member
 
Javi
Join Date: Jan 2013
Posts: 256
Rep Power: 7
FJSJ is on a distinguished road
Quote:
Originally Posted by Daniel_Khazaei View Post
Thanks for the tip.

like having a local coordinate system on the center of each circles (faces) and then modifying the vertices? (this way I can have identical details on each faces, while the global position is different)

As you can see in my geometry, I can only modify the y position with your suggestion, but I also need to modify the z location of vertices.


regards

Yes, If you want to move a vertex in Z direction you have to do exactly the same thing but, you have to choose "Modify Z".

Yes. You can do it. But itīs hard work (I mean, create LCS, etc..). If you want to move a vertex from you LCS itīs exactly the same way but.. you have to specify the lenght you wanna move it (blank space at side of "Modify Y") and the LCS from.
Daniel_Khazaei likes this.
FJSJ is offline   Reply With Quote

Old   October 20, 2013, 22:11
Default
  #9
Senior Member
 
Stuart Buckingham
Join Date: May 2010
Location: United Kingdom
Posts: 267
Rep Power: 16
stuart23 will become famous soon enough
The *best* way to do this would be as follows:

Get one face of your swept mesh as you want it.

Use the Vertex Associations tool and associate all the face vertices to themselves. This will create points from the vertices.

You can then use the Geometry > Translate and Rotate tool to copy the points to the swept faces. Use the Curve -> Curve selection method and select the curves that define the face on both sides. If the curve is a full circle (or any other shape where the start, mid and end points are all colinear), you will first have to cut the curve in half or else the points will not be properly rotated.

Once you have the points in place, go ahead and associate the verticies to these points. Also, you will want to do your edge sizings with "Copy to all parallel" selected.


Good Luck

Stu
Daniel_Khazaei likes this.
__________________
http://bc247.wordpress.com
stuart23 is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[ICEM] Pipe 90 elbow joint meshing issue sihaqqi ANSYS Meshing & Geometry 25 April 17, 2015 04:59
Meshing the pipe . Pavelko ANSYS Meshing & Geometry 14 May 30, 2013 23:10
[ICEM] blocking splined curve pipe jyh3134 ANSYS Meshing & Geometry 9 January 6, 2013 13:43
Meshing a pipe joint for OpenFoam--Hex or Tet???? nileshjrane OpenFOAM 4 August 14, 2010 05:38
Meshing of circular pipe in CFX-mesh Fatnes CFX 3 March 27, 2009 07:29


All times are GMT -4. The time now is 19:22.