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[ICEM] Interfaces between different 3 domains

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Old   March 11, 2021, 02:46
Unhappy Interfaces between different 3 domains
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Larissa C.Pinheiro
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Hi all,

I have been struggling some days now with an ICEM interface problem, ANY help would be much appreciated.

I attached some self-explaining images of the geometry and the mesh. These images and questions are related to a reduced model of my real problem (three annular tubes inside a fluid domain).

In the underlying model, I have 3 domains: two fluid domains and a solid domain (the tube). The external domain is fluid which encompasses an annular tube with some wall thickness. Fluid is also flowing through (inside) the tube.

When a mesh the external fluid, the face against the tube should be an interface between it and both the tube and the inner fluid. However, while I have just one interface at the external fluid domain I got 2 faces touching it: one from the tube and another from the inner fluid.

When I open this mesh in CFX-Pre it eighter tells me that I can only use one face from each domain to create a domain interface or put this face as a "default wall" (in case I don't assign a boundary condition to it).

Any help would be much appreciated since I have tried many unsuccessful tricks.
Attached Images
File Type: jpg geom_annular.jpg (77.7 KB, 11 views)
File Type: jpg geom_annular2.jpg (55.2 KB, 10 views)
File Type: jpg mesh_annular1.jpg (89.7 KB, 11 views)
File Type: jpg mesh_annular2.jpg (120.3 KB, 11 views)
File Type: jpg mesh_annular3.jpg (103.1 KB, 11 views)
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Old   March 15, 2021, 15:06
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Larissa C.Pinheiro
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My problem is actually that I have interfaces with different sizes. Anyone has ever faced such a problem?

Last edited by Shanaylla; March 15, 2021 at 15:06. Reason: grammar
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ansys, cfx-pre, icem, interface defining

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