[ICEM] ICEM not adapting Premesh to newly set parameters

max.e · June 15, 2021, 04:49

Hi folks,

within the context of my bachelor thesis, I have to adapt preexisting meshs of a cooling channel with the goal of achieving the lowest cell count possible for RSM simulations.

This worked very well for the first couple of meshs I did, but now I have run into an issue.

I have reduced the number of nodes on several edges of the blocking structure through the "copy to all parallel edges" function. I know that the individual mesh laws of every parallel edge get overwritten during this process, but just adapting the node count on one edge also did not work properly.
For my geometry, I edit every edge with Pre-Mesh Params, the changes I make have no effect on the resulting premesh structure anymore. Weirdly, this problem only applies to edges in the fluid, also not to every edge in the fluid domain. Changes made for edges in the solid still show after mesh regeneration.
I did not make the original geometry and blocking and while being less noticeable, that problem seemed to exist for the original too. Sadly, I could not find anything that is different for the problematic edges. They also have no locked parameters, etc...
All suggestions are greatly appreciated

Thank you very much in advance!

Cheers,
Max

Screenshot (46).jpg

Screenshot (48).jpg

aero_head · June 15, 2021, 22:49

I would say to re-mesh the pieces individually then put them together after you are happy with them.

When you are re-meshing, are you selecting the option to replace or merge the mesh? You say there are no locked parameters, but are you using bunching?

max.e · June 17, 2021, 05:01

Thank you for your reply!
I have found the problem now, it seemed like periodic references for the node placement on the edges were set on the outlet part of the channel and not on the inlet. This meant that I only had to change the placement of nodes on edges on the opposite side of the channel to make it work... This isn't the case for the edges in the solid and also the reason why I was originally confused.

June 15, 2021, 04:49	ICEM not adapting Premesh to newly set parameters	#1
max.e New Member Max E Join Date: Jun 2021 Posts: 6 Rep Power: 4	Hi folks, within the context of my bachelor thesis, I have to adapt preexisting meshs of a cooling channel with the goal of achieving the lowest cell count possible for RSM simulations. This worked very well for the first couple of meshs I did, but now I have run into an issue. I have reduced the number of nodes on several edges of the blocking structure through the "copy to all parallel edges" function. I know that the individual mesh laws of every parallel edge get overwritten during this process, but just adapting the node count on one edge also did not work properly. For my geometry, I edit every edge with Pre-Mesh Params, the changes I make have no effect on the resulting premesh structure anymore. Weirdly, this problem only applies to edges in the fluid, also not to every edge in the fluid domain. Changes made for edges in the solid still show after mesh regeneration. I did not make the original geometry and blocking and while being less noticeable, that problem seemed to exist for the original too. Sadly, I could not find anything that is different for the problematic edges. They also have no locked parameters, etc... All suggestions are greatly appreciated Thank you very much in advance! Cheers, Max Screenshot (46).jpg Screenshot (48).jpg

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June 15, 2021, 22:49		#2
aero_head Senior Member Kira Join Date: Nov 2020 Location: Canada Posts: 435 Rep Power: 8	I would say to re-mesh the pieces individually then put them together after you are happy with them. When you are re-meshing, are you selecting the option to replace or merge the mesh? You say there are no locked parameters, but are you using bunching?

June 17, 2021, 05:01		#3
max.e New Member Max E Join Date: Jun 2021 Posts: 6 Rep Power: 4	Thank you for your reply! I have found the problem now, it seemed like periodic references for the node placement on the edges were set on the outlet part of the channel and not on the inlet. This meant that I only had to change the placement of nodes on edges on the opposite side of the channel to make it work... This isn't the case for the edges in the solid and also the reason why I was originally confused.