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Changing Boundary condition depend on transient result |
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May 11, 2017, 21:24 |
Changing Boundary condition depend on transient result
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#1 |
New Member
HYUNGSIK UM
Join Date: Jun 2015
Posts: 4
Rep Power: 11 |
Hello.
I want to simulate the effect of rupture disc on the exhaust pipe. Rupture disc should be closed when the pressure is under 0.5 bar. But after the pressure reaches 0.5 bar, the disc should be open. How can I simulate this rupture disc? The boundary condition will be changed wall to outlet depends on pressure near the disc. I wander about pre setting and CEL Expression for this traisient simulation in CFX. Thank you!! |
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May 11, 2017, 22:31 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,870
Rep Power: 144 |
You could:
* Use the conditional opening feature on an interface, linked to a CEL expression which looks at the pressure * Use a momentum source term to freeze the flow when the valve would be closed * Model the valve directly as a rigid body simulation |
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Tags |
boundary, cel, change, rupture |
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