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May 20, 2008, 09:20 |
Hello.
Now I'm getting to m
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Senior Member
Sebastian Gatzka
Join Date: Mar 2009
Location: Frankfurt, Germany
Posts: 729
Rep Power: 20 |
Hello.
Now I'm getting to my next problem: The rise of sperical bubble to it's terminal velocity. I used the test-setup described in http://test.interface.free.fr/Case01.pdf Unfortunately there is nothing about the boundary conditions in this case. As the boundary should not have an influence on the shape and even on the terminal veloctiy (if the computational domain is large enought), i chosed the following: left: symmetryPlane for all values (U,pd,gamma) (I use an axisymmetric description top: totalPressure (0) for pd, uniform (0 0 0) for U, zeroGradient for gamma left & bottom: zeroGradient for pd and gamma, uniform (0 0 0) for U To initialize the bubble I used funkySetFields to create a gamma-field at the center of the domain. Here is the image: I used the same function to initialize the pressure inside the bubble to the value defined by sigma/radius: Transport Properties were taken from the test-case description mentioned above. Sounds bad, but it's real: the solver is doing nothing: Exec : interFoam . . Date : May 20 2008 Time : 15:16:11 Host : M1530 PID : 6392 Root : /home/sega/OpenFOAM/sega-1.4.1/run/rise Case : . Nprocs : 1 Create time Create mesh for time = 0 Reading environmentalProperties Reading field pd Reading field gamma Reading field U Reading/calculating face flux field phi Reading transportProperties Selecting incompressible transport model Newtonian Selecting incompressible transport model Newtonian Calculating field g.h time step continuity errors : sum local = 0, global = 0, cumulative = 0 #0 Foam::error::printStack(Foam:stream&) So, there must be something wrong. Any ideas? My OpenFOAM-case is located here: http://therealsega.th.funpic.de/openfoam/rise.tar.gz
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