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open channel openings boundary conditions

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Old   October 25, 2013, 01:23
Default open channel openings boundary conditions
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Svetlana Tkachenko
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Is CFX's "Entrainment - Opening pressure" boundary condition on "Opening" same as stress-free[1] boundary condition? In an open channel with buoyancy-driven flow, is such condition suitable for the channel openings?

[1] T. C. Papanastasiou, N. Malamataris and K. Ellwood, A new outflow boundary condition, International Journal for Numerical Methods in Fluids, vol. 14, pp. 587-608, 1992.
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boundary condition, buoyancy, open channel, opening

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