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Which solver suits for liquid (!) incompressible pipe flow?

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Old   January 26, 2012, 09:27
Exclamation Which solver suits for liquid (!) incompressible pipe flow?
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Stefan Wilhelm
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Hi all,

I need your help in finding the right solver for my Bachelor thesis. In the simulation should show the propagation and reflection of pressure waves in a pipe. Therefore I think I needed a compressible solver.
The fluid should be water. My problem is that all compressible solvers I can find in OpenFOAM (v. 1.7.1) work with perfect gas equations.
Does anyone know a fitting solver or if it is possible to use the solvers with assumption of perfect gas under certain conditions?

Im looking forward to recieving your answeres
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Old   January 27, 2012, 10:21
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Alberto Passalacqua
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For transonic and supersonic liquids there is ~/OpenFOAM/OpenFOAM-2.1.x/applications/solvers/compressible/sonicFoam/sonicLiquidFoam

There is an example application in the programmer's guide (Decompression of a tank).
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Old   February 11, 2012, 13:02
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Stefan Wilhelm
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Hi alberto,

Thanks a lot! this solver really fits
Im fighting now with setting an inital flow profile due to undesired pressure waves at that time. But this is an other topic.

Greetings
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Old   February 12, 2012, 11:24
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Stefan Wilhelm
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I just read in the description of the solver, that it is for trans-sonic/supersonic, laminar flow of a compressible liquid.
Does it mean the liquid should flow with transonic speed or is it possible that the fluid flows far below sonic speed (0.2 m/s) but observes pressure waves with sonic speed?
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