[ICEM] Mesh uniformity/smooting

RPFigueiredo · March 18, 2013, 10:20

Hello!

As I am sure you will notice I am very new at this whole CFD/Mesh/ICEM universe. However, I have already been asked to produce a mesh for two very complex parts, and I am struggling quite a bit with it.

My main issue relates to the uniformity of the mesh, as it can be seen in the picture below:

The blocking is fairly complex, and therefore adjusting the number of nodes in each edge in order to achieve a satisfactory uniformity would take a while. My main question is, therefore, is there an easier way in order to achieve this? What is the relationship between element size and number of nodes? Should they be dependent on each other?

As you can see, I've even tried using the smooth comand on the second part:

But surprinsingly, after the long process was over, the mesh quality actually decreased! Should I avoid this process?

Also, I have been trying to maintain good angles, which is actually hard due to the angled edges of the model. Would there be a better blocking strategy to handle such geometries?

Thank you very much in advance!

Far · March 18, 2013, 13:32

I dont see any problem in meshing. It is of good quality.

RPFigueiredo · March 18, 2013, 14:48

Well, that's good news!
Thanks for the reply.

RPFigueiredo · March 18, 2013, 15:21

I do have some problems regarding the periodicity. I know how to set periodicity under the global mesh setup, but I'm not sure about how to define the block vertices which are periodic.
Should I just select the vertices on one pariodic side, and not both?

March 18, 2013, 10:20	Mesh uniformity/smooting	#1
RPFigueiredo Member Rolando Figueiredo Join Date: Mar 2013 Posts: 41 Rep Power: 13	Hello! As I am sure you will notice I am very new at this whole CFD/Mesh/ICEM universe. However, I have already been asked to produce a mesh for two very complex parts, and I am struggling quite a bit with it. My main issue relates to the uniformity of the mesh, as it can be seen in the picture below: The blocking is fairly complex, and therefore adjusting the number of nodes in each edge in order to achieve a satisfactory uniformity would take a while. My main question is, therefore, is there an easier way in order to achieve this? What is the relationship between element size and number of nodes? Should they be dependent on each other? As you can see, I've even tried using the smooth comand on the second part: But surprinsingly, after the long process was over, the mesh quality actually decreased! Should I avoid this process? Also, I have been trying to maintain good angles, which is actually hard due to the angled edges of the model. Would there be a better blocking strategy to handle such geometries? Thank you very much in advance!

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March 18, 2013, 13:32		#2
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	I dont see any problem in meshing. It is of good quality.

March 18, 2013, 14:48		#3
RPFigueiredo Member Rolando Figueiredo Join Date: Mar 2013 Posts: 41 Rep Power: 13	Well, that's good news! Thanks for the reply.

March 18, 2013, 15:21		#4
RPFigueiredo Member Rolando Figueiredo Join Date: Mar 2013 Posts: 41 Rep Power: 13	I do have some problems regarding the periodicity. I know how to set periodicity under the global mesh setup, but I'm not sure about how to define the block vertices which are periodic. Should I just select the vertices on one pariodic side, and not both?