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Forum: Main CFD Forum

February 4, 2016, 00:35

Replies: 15

Unsteady flow around a building

Views: 1,387

Posted By adrin

The average kinematic viscosity of (dry) air is...

The average kinematic viscosity of (dry) air is roughly 1.6E-5 m^2/s. So, Re based on your suggested U~65m/s and D~75m is Re ~ 3.1E8. Of course, you realize that all your dimensions should now be...

Forum: Main CFD Forum

February 3, 2016, 21:17

Replies: 15

Unsteady flow around a building

Views: 1,387

Posted By adrin

Just a correction: I said "the best D would be...

Just a correction: I said "the best D would be the largest width that is "normal" to the incoming flow (think of a long cylinder; D is still the diameter and not the cylinder length, because flow...

Forum: Main CFD Forum

February 3, 2016, 18:34

Replies: 15

Unsteady flow around a building

Views: 1,387

Posted By adrin

I second Alex with his response. Khaza, with due...

I second Alex with his response. Khaza, with due respect, your difficulty at this stage is not with CFD but with understanding the very basics of fluid dynamics. The Reynolds number is a parameter...

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