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Old   February 1, 2016, 03:20
Default hydraulic diameter
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Jongmin Choi
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Hi, I 'm doing ANSYS fluent tutorial

While I'm following 'chap. 7 using a non-conformal mesh,' I have been confused because of hydrulic diameter. It is little bit different from the knowledge that I 've learned from 'Fluid Mechanics' class in undergraduate, i.e.,

By using that equation, I could get a hydraulic diameter of 1.3 in but, the tutorial says that it should be 5 in.
I thought that the material that flows the main duct is air so I can use that equation.
I attach the captures of problem and tutorial.

Thank you all my ANSYS teachers!!
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