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Negative Total Pressure in cavitatingFoam RAS/Throttle Case in OF 1.6 |
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August 30, 2010, 16:59 |
Negative Total Pressure in cavitatingFoam RAS/Throttle Case in OF 1.6
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#1 |
New Member
Michael Ahlmann
Join Date: Feb 2010
Posts: 27
Rep Power: 16 |
I'm working on modelling cavitating flow in a series of control valves, and my plan was to use cavitatingFoam to do so. However, when running the "Throttle" tutorial case in the "RAS" subfolder, I noticed that the total pressures (calculated using ptot utility) go negative which seems unphysical. I know that in some other CFD solvers there is a reference pressure somewhere, does OpenFOAM use anything similar? If not, can somebody explain why the negative pressure shows up?
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September 6, 2010, 06:36 |
same problem...
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#2 |
New Member
Join Date: Sep 2010
Posts: 1
Rep Power: 0 |
I need to simulate the cavitation in an injector. To get more familiar with the code dedicated to the cavitation in openFoam, I try to run the throttle tutorials case.
I also got some negative value for the pressure. Moreover I can observe some backflow from the outlet and a kind of pressure wave... I donīt know how to solve the problem. If you have any idea, would be great! thx |
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Tags |
cavitatingfoam, multiphase, negative pressure, negative total pressure |
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