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Fluid dynamics in zero-g

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Old   September 11, 2009, 13:01
Smile Fluid dynamics in zero-g
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Charles West
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Hello,
I am new to computational fluid dynamics and have some questions about OpenFOAM's capabilities. Could this library simulate a spinning fixed amount fluid in zero g, taking into account gravity? (It would be nice if it could account for thermal radiation/viscosity change, but not necessary)

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Old   September 14, 2009, 02:14
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J. Cai
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Hello, dear Charles, all the standard solvers are listed in,
http://www.opencfd.co.uk/openfoam/do...l#x13-890003.5

enjoy,
chiven
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Old   September 15, 2009, 04:31
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Paul Schiefer
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Quote:
Originally Posted by charles_west View Post
Could this library simulate a spinning fixed amount fluid in zero g, taking into account gravity?
Please explain yourself. Zero g means zero gravity? Then how do you take into account gravity? Do you mean the gravity due to the mass of the fluid itself? In droplets of water you can neglect gravitational forces compared to surface tension.
Maybe you are talking about star formation?
Or do you refer to parabolic flights? Then you still have the gravitational force of the earth and there is nothing special when it comes to fluid dynamics. Try the icoFoam or interFoam solvers for the start.
Without further explanations I'm afraid nobody will be able to tell you how to take into account gravity if there is no gravity.

Paul
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