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Forum: CFX

November 30, 2011, 16:57

Replies: 6

Hydro Penstock Boudary conditions

Views: 2,027

Posted By ghorrocks

There is a big difference between checking...

There is a big difference between checking whether cavitation is possible and modelling cavitation.

Checking if cavitation is possible can be done with a simple model with no hydrostatic pressure....

Forum: CFX

November 30, 2011, 04:59

Replies: 6

Hydro Penstock Boudary conditions

Views: 2,027

Posted By ghorrocks

Why do you say the flow is "almost laminar"? For...

Why do you say the flow is "almost laminar"? For a 11ft diameter duct with water that would mean a flow of no faster than about 1 mm/s. Unless you are modelling these low flow velocities then your...

Forum: CFX

November 29, 2011, 16:23

Replies: 6

Hydro Penstock Boudary conditions

Views: 2,027

Posted By ghorrocks

The question is whether the head makes any...

The question is whether the head makes any difference. Do you have buoyancy, variable fluid properties or some fluid path which is affected by the head pressure? If so then better include it. If not...

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