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Annulus Flow Through Multiple Inlets and Outlets, Fluent (Student)

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Old   July 7, 2021, 16:43
Default Annulus Flow Through Multiple Inlets and Outlets, Fluent (Student)
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Jk
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Hello,

Case Setup:
I'm doing my first fluid analysis in FLUENT where I'm trying to set up a case with 22 inlets and 22 corresponding outlets within an annulus, all on the same plane (in symmetry). The fluid is air and is assumed laminar, all inlets experience the same physical effects.

Problem:
In "Cell Zone Conditions" and "Boundary Conditions", I get a very messy layout where I have problems assigning the proper values to the right geometry.

My Approach To the Problem:
Different configurations with regards to geometry setup have been tested, such that I can apply proper boundary conditions in "Setup". Figure_1 displays my latest approach where I sliced the bodies in the middle plane, such that I can apply different names for outlet and inlets. (See Figure mesh setup).


My Question(s) Are:
  • How should I model this to obtain an easy setup for my boundary conditions?
  • Where should I put the named selection for Wall, the whole body, or each circular body?
  • Is there a symmetry setting that can be applied, e.g., slicing?


My goal is to find the flow rate and velocity and compare it to an exact copy but with a different (not circular) geometry.


Thank you for your time and help
Attached Images
File Type: jpg Figure_1_Geometry.jpg (56.4 KB, 5 views)
File Type: jpg Figure_2_Mesh_Setup.jpg (113.8 KB, 6 views)
File Type: jpg Figure_3_Cell zones.jpg (126.5 KB, 3 views)
File Type: jpg Figure_4_Boundary conditions.jpg (131.8 KB, 1 views)
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Old   July 9, 2021, 04:19
Default Resolved
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Jk
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This has been resolved. Since I've only been working with OpenFOAM, I realized that with regards to geometry formation, it's the fluid domain that needs to be modeled. (i.e., caps/lids as in Solidworks fluid simulation or OF is not the way to do it)

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