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Creating different meshes in two different geometries in contact with each other

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Old   September 29, 2022, 10:12
Default Creating different meshes in two different geometries in contact with each other
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Hello everyone,

I'm trying to do a validation study, but I have a few problems with the mesh part.

I have a solid plate and a cooling channel geometry with refrigerant flowing through it. Since it is symmetrical, I divided it into two and applied the symmetry boundary condition.

The problem is I want to mesh two fluid and solid domains differently. But I did not understand how to do it. I tried various methods. You can access it from pdf.

Meshing_question_compressed.pdf
How can I mesh them iindependently?

(I am trying to learn cfd. thank you for your patience)
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Old   September 30, 2022, 02:06
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to mesh fluid and solid separably you may do following:
1. simply make 2 different meshes and load them into fluent one by one, assign interface

2. in design modeler (geometry) put fluid and solid zone into different parts (so you will have 2 parts). Go to mesher, created mesh. In name selections define interface between fluid and solid: you need 2 surfaces -> surface of solid part adjusted to fluid and surface of fluid part adjusted to solid (they are overlapped)

however, personally I think you don't have any problems with model, try to use other setting. Use more iterations.
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Old   September 30, 2022, 09:00
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Thank you for your reply AlexanderZ,

As you said , I named one of the conflicting faces as "interface" in the mesh section. When I open the Fluent, I encountered a message like this:
------------------
Fluent can try to improve the mesh quality via the TUI command
/mesh/repair-improve/improve-qualityNote: zone-surface: cannot create surface from sliding interface zone.
Creating empty surface.
Note: zone-surface: cannot create surface from sliding interface zone.
Creating empty surface.
Note: zone-surface: cannot create surface from sliding interface zone.
Creating empty surface.
Note: zone-surface: cannot create surface from sliding interface zone.
Creating empty surface.
------------------
When I searched for this error on the internet, I read that I need to introduce these overlapping surfaces in Fluent.

Did I understand correctly or should I have done the naming differently?
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Old   October 4, 2022, 02:15
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to make it more clear for you, mesh your zones separately, then load in fluent one of them and append another. Next define interface
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Old   October 4, 2022, 04:03
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Quote:
Originally Posted by AlexanderZ View Post
to make it more clear for you, mesh your zones separately, then load in fluent one of them and append another. Next define interface
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Thank you so much AlexanderZ. I solved the problems.
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