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Forum: FLUENT

October 8, 2023, 11:09

Replies: 6

Compressbible flow in zigzag duct with high Ma vs Fanno theory

Views: 331

Posted By DrZoidberg

Ok, now I tried more mesh settings and varied esp...

Ok, now I tried more mesh settings and varied esp the outlet domain. The results look more realistic now.

The bigger the outlet domain, the better - that was the idea behind the new mesh. It is...

Forum: FLUENT

October 1, 2023, 06:10

Replies: 6

Compressbible flow in zigzag duct with high Ma vs Fanno theory

Views: 331

Posted By DrZoidberg

Yes, there is laminar separation in the bends....

Yes, there is laminar separation in the bends. The image shows the profile in the first bends (near to inlet).

Forum: FLUENT

September 30, 2023, 19:43

Replies: 6

Compressbible flow in zigzag duct with high Ma vs Fanno theory

Views: 331

Posted By DrZoidberg

Hi LoGaL, thank you for the tip! That will save...

Hi LoGaL,
thank you for the tip! That will save some time ;) I tried again with an improved mesh at the outlet. Now it ran at least, but the solution is stuck at this point. Residuals oscillate...

Forum: FLUENT

September 29, 2023, 19:37

Replies: 6

Compressbible flow in zigzag duct with high Ma vs Fanno theory

Views: 331

Posted By DrZoidberg

Compressbible flow in zigzag duct with high Ma vs Fanno theory

Dear CFD community,

I want to simulate the loss coefficient in a zigzag duct. My basic case setup is:

-strucutred mesh ~1e6 elements (see image of inlet section enclosed)
-steady...

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