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Inlet boundary condition

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Old   December 30, 2013, 01:36
Default Inlet boundary condition
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Dear all,

I am going to specified upstream boundary condition at inlet of bottom outlet of a high dam. Now, is it necessary to simulate all of reservoir upstream water elevation or not?

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Old   December 31, 2013, 12:43
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Jeff Burnham
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No, it is not necessary to simulate all of the upstream reservoir, as long as you know the depth of the upstream reservoir acting on the outlet. Use a pressure-type boundary, and set the pressure at the boundary = Patm + RHO*g*h, with h = distance from the surface to the pipe.
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