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#1 |
New Member
Carl vance
Join Date: May 2010
Location: Perth Western Australia
Posts: 3
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Hi folks,
I am a design engineer currently learning the ropes of CFX, I have a problem to solve of a moving gate valve, we are looking for cavitation issues behind the gate during high speed movement. I have set up the transient simulation using an immersed solid domain for the moving gate and specifying a linear motion of the gate as a function of time for the duration of the test. The fluid domain where the gate moves is of a fine mesh (finer than the solid) and contains interfaces with the other fluid domains. When I run the simulation I can see the solid moving but do not get any fluid movement or pressure changes. I have also run the tutorials without issue. Any suggestions would be great. cheers |
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#2 |
New Member
Carl vance
Join Date: May 2010
Location: Perth Western Australia
Posts: 3
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Its been a few days and I thought I would bump this thread just in case anyone missed it over the weekend.
All help appreciated. Thanks |
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#3 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
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Some comments:
* You should use units in your CEL expressions. "rotrpm" should be entered in units of rpm and then the conversion to rad/s is done internally. * I think your problem may be in using "atstep" is Disp. It should be written in terms of simulations time "t" |
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#4 |
New Member
Carl vance
Join Date: May 2010
Location: Perth Western Australia
Posts: 3
Rep Power: 16 ![]() |
Excellent advise my good man. I will pay closer attention to units from now on.
Getting some useful results now. Many thanks |
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cfx 12, fsi |
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