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Forum: CFX

June 13, 2012, 07:28

Replies: 3

Raise pressure level in simulation to avoid negative pressures

Views: 1,504

Posted By ghorrocks

Well, for the bonus prize: A big problem...

Well, for the bonus prize:

A big problem with spool valves is that when they crack open at high pressure the very high velocity just as it opens causes the pressure to collapse (due to bernoulli)...

Forum: CFX

June 12, 2012, 19:40

Replies: 3

Raise pressure level in simulation to avoid negative pressures

Views: 1,504

Posted By ghorrocks

I did some spool valve design work many years...

I did some spool valve design work many years ago....

It is well known that spool valves cavitate when they crack open. That limits the pressures to approximately the vapour pressure of the oil....

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