# [ICEM] Cylinder Meshing

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 March 15, 2012, 11:10 Cylinder Meshing #1 New Member   Join Date: Mar 2012 Posts: 4 Rep Power: 7 I was wondering what the best process for using ICEM would be to mesh a cylinder. I wanted the circular surface to have a mesh that radially grows from the center. I have tried using ANSYS meshing but I could not get the circular surface to complete the radially mesh. I had gotten around this by using a small square in the middle of this surface and divided the rest of the surface into four pieces. I am now trying to find a way to get a purely radially mesh. I am new to ICEM and was just wondering what the process would be to complete this mesh, if possible, in ICEM.

 March 15, 2012, 11:36 #2 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,352 Blog Entries: 6 Rep Power: 45 this may be helpful http://www.cfd-online.com/Forums/ans...cylinders.html

 March 15, 2012, 11:38 #3 New Member   Carles Join Date: Jan 2012 Location: Karlsruhe Posts: 29 Rep Power: 7 I think that the easy way is to make a o-grid and use the bunching laws: geometric 1 or 2. donīt forget to associate the edges to the curves at the top and the bottom of your cylinder. it could be good that u check the tutorials.

March 15, 2012, 12:28
#4
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I tried following the tutorial for the 3D pipe, but I end up with just a rectangular mesh inside of my cylinder. I associated the edges of the squares at the end of the block to the circular curve. I have attached the image of the block and geometry curves, as well as the incorrect mesh.
Attached Images
 block.JPG (28.4 KB, 48 views) badmesh.JPG (87.4 KB, 67 views)

 March 15, 2012, 12:46 #5 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,352 Blog Entries: 6 Rep Power: 45 There may be three possible problems 1. Edge association is not correct. 2. If step 1 is done, use edit edge >>> spline 3. Create four points on each circle and associate vertex to point. To improve quality, create O-block as well.

March 15, 2012, 16:54
#6
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I suspect you have made a very basic mistake about association. Check attached tin and blk files

Attached Files
 cylinder.zip (11.2 KB, 23 views)

 April 20, 2014, 13:42 #7 New Member   Join Date: Apr 2014 Posts: 1 Rep Power: 0 Hi, I am struggling with the same issue. I want to create a mesh, radially growing from the center. I am using KIVA and hence not allowed to use o-grid mesh. Here a picture: I am fairly new to ICEM and really dont understand why it is so hard. When I am doing a partially circle ( i.e. 90 degrees ) the mesh is automatically starting from the edge. Thanks a lot for your help!

April 20, 2014, 13:49
#8
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Quote:
 Originally Posted by Utzname Hi, I am struggling with the same issue. I want to create a mesh, radially growing from the center. I am using KIVA and hence not allowed to use o-grid mesh. Here a picture: I am fairly new to ICEM and really dont understand why it is so hard. When I am doing a partially circle ( i.e. 90 degrees ) the mesh is automatically starting from the edge. Thanks a lot for your help!
Create ogrid first. then merge vertices of inner ogrid.

Attached Images
 Untitled.jpg (47.0 KB, 144 views)

 April 4, 2017, 19:09 #9 New Member   Sergi Join Date: Mar 2017 Posts: 1 Rep Power: 0 Far could you please extend a little bit more the explanation about how to obtain your fully radial resultant mesh with ICEM? I am struggled with the same problem and find no solution... Hope you can help me! Thank you in advance.

April 5, 2017, 06:31
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Start with normal ogrid for a cylinder. See the first attached picture attached pictures. Then merge the inner vertices of the ogrid with the merge vertices tool (picture2). Do this for both sides of your cylinder and you get a structure like shown in picture 3.

You can also use an alternative approach by extrusion. Here I started with a 2D surface planar blocking (picture 4). Convert it to unstructered mesh the usual way and then do a full 360 degree extrusion by rotation with the 2D grid. Both methods end up with a grid shown in picture 5.
Attached Images
 radial1.jpg (83.0 KB, 15 views) radial2.jpg (80.8 KB, 15 views) radial3.jpg (78.1 KB, 15 views) radial4.jpg (81.5 KB, 15 views) radial5.jpg (84.4 KB, 16 views)

 April 5, 2017, 13:52 #11 Super Moderator   Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,352 Blog Entries: 6 Rep Power: 45 kad explained very well.

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