Learning Forum

[helen.durand]

Hello!

I am trying to create a mesh in ICEM CFD and am having difficulty getting it to work the way I want.

My simulation consists of a pipe with a fluid inner region and a solid outer region. The goal is to be able to simulate the interactions between the fluid and solid regions as a fluid flows through the pipe.

Currently my mesh looks like this:

The issue I am currently having is that meshes at the walls of the interface to not match, which can be seen in the image below in the way that the radial 'spokes' (lines) do not line up. This is a consequence in the way in which I made the mesh. I created each region in individual files and combined the results to get the mesh I currently have.

I have tried to remedy this situation in the following two ways, but both do not give good results.

1). Using the "Align Nodes" tool, I can only get the radial spokes to like up on a face but the alignment does not get applied to the rest of the simulation. Only one face is aligned properly and the rest of the mesh is unaltered.

2). Using the "Merge Meshes" tool, I am able to align the meshes at the interface but I get poor results. The radial spokes become distorted near the boundary and the result contains many poor quality elements.

 

I would really appreciate if anyone has an idea that will allow the meshes at the interface to align while maintaining a similar overall look to the mesh.

Please let me know if there is anything I can clarify.

Thank you!

[helen.durand]

Hello, just wondering if anyone has had a chance to look at this.

 

Thanks!

 

P.S. I have been unable to attach the .msh file, as the attach feature causes the page to time out. I will try again at another time.

[Behrad]

I had the same problem and fuse mesh in Fluent worked for me

[Rob]

Good suggestion but, unfortunately, fuse only works when the facets on each face align.  With independent meshes it's luck whether the facets align. Can you build the mesh in one ICEM CFD session? 

[helen.durand]

In case someone finds this thread in the future, I figured out what I was doing wrong. 

The issue is that I didn't know that you needed to assign blocks to each region (the fluid and solid regions) in ICEM CFD. By default, ICEM CFD was assuming all of the block to be liquid. I was trying to combine two separate files, but this means that the meshes do not align. It is better to create everything in one file and then add the blocks to the appropriate region. I did this by right clicking on the name of the region under parts (in ICEM CFD) and then adding the blocks to their appropriate regions.

Thank you to everyone who replied to this thread! 

[hassanahmed_93]

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Thank you for leaving the thread. Appreciate your effort.

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[mounaraha]

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please how did you represent or draw the interface between the two bodies in ICEM

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