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Forum: CFX

August 30, 2011, 19:00

Replies: 12

Reference Pressure CFX

Views: 8,529

Posted By ghorrocks

That is just basic fluid mechanics from the...

That is just basic fluid mechanics from the definitions of Mach number and dynamic pressure, and anything else you already know about the flow.

Forum: CFX

August 29, 2011, 18:50

Replies: 12

Reference Pressure CFX

Views: 8,529

Posted By ghorrocks

As I said, the reference pressure should be set...

As I said, the reference pressure should be set to the atmospheric pressure.

It sounds like your condition of Ma=0.9 and dyn pressure of 4.5kPa can be evaluated to define the velocity, density,...

Forum: CFX

August 28, 2011, 06:46

Replies: 12

Reference Pressure CFX

Views: 8,529

Posted By ghorrocks

Your initial question was vague. A dynamic...

Your initial question was vague.

A dynamic pressure of 4.5kPa where? At the inlet? At a specific point in the domain? Isn't this simply a matter of setting the inlet velocity to a appropriate...

Forum: CFX

August 27, 2011, 07:15

Replies: 12

Reference Pressure CFX

Views: 8,529

Posted By ghorrocks

Density is calculated on absolute pressure. The...

Density is calculated on absolute pressure. The absolute pressure is the sum of the reference pressure (the one on the domain tab) and the pressure variable (which is static pressure).

Please do...

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