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VOF open channel flow simulation

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Old   February 25, 2017, 03:04
Default VOF open channel flow simulation
Masoud Ravan
Join Date: May 2016
Location: Tehran
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Hi everyone, I am simulating a hydraulic jump in the stilling basin. At the Beginning, flow starts from a rectangular channel. Fluent solved the problem but as you see in the pictures, there is a water surface reduction at the beginning...and I cannot find the reason . I will appreciate your help.
inlet boundary condition for water: velocity inlet
inlet boundary condition for air: Pressure inlet
outlet boundary condition for air: Pressure outlet
model: VOF, Implicit, transient
Thanks in advance.
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fluent, multiphase flow, open channel flow, vof

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