Learning Forum

[ghassan.abusultanah]

I'm trying to mesh a large Air volume with small openings but I get a mesh failed

output message In "messages" tab 

"Mesh requires attention.

1. MultiZone blocking decomposition failed."

 

What could cause this this issue ? and how I can solve it ? 

[Subashni Ravichandran]

Hello Ghassan. AbuSultanah

Based on the blocking approach, the meshing function automatically tries to decompose the geometry into blocks and attempts to generate a hex mesh.

It could help if you could split the geometry(volume) in a way such that blocks are created.
Please ensure that the opposite faces of these blocks are mappable to ensure smooth hex mesh. 

[ghassan.abusultanah]

Subashni This simple 100'x100' hanger, with supply Air from the front and Exahust from the top as shown in attached picture 

[Subashni Ravichandran]

Hello Ghassan. AbuSultanah

I created a geometry quite similar to your image and made a few splits as shown in the attached image and mesh task was successful.

 You may apply similar splits to your geometry and give it a try.

[ghassan.abusultanah]

Subashni

The mesh for solid is created successfully but not for the Air Volume Inside. Could you please share with me the mesh settings you are using ? Please see the picture below for the mesh I got for the solid part. 

[Subashni Ravichandran]

Hello Ghassan. AbuSultanah

I just created a solid based on the image shared by you. I would be able to help you better with the mesh settings if you could share your model with me. 

If your model is proprietary I can share the ANSYS Secure Transfer link to share the model.

[ghassan.abusultanah]

Subashni Yes, Please send me Secure Transfer Link

[Subashni Ravichandran]

Hi Ghassan. AbuSultanah

I have shared the Secure Transfer link.

[Subashni Ravichandran]

Hello Ghassan. AbuSultanah

I have not received any model from you.
Are you facing any difficulties using Secure Transfer?

[ghassan.abusultanah]

Subashni this is issue is solved, Thanks!