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Simulatling Two-fluid models..?

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Old   May 27, 2012, 10:04
Exclamation Simulatling Two-fluid models..?
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Mahdiar Farhoudi
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I wanna simulate 3-sided spillway (U-shaped spillway) model using two-fluid.
Due to the Help menu:
CUSTOM TUTORIALS > Hydraulics Tutorial > Variation: Run as a Two-Fluid Problem
that say's when the two fluid densities vary by a significant amount, a two-fluid model is not accurate!
so how can i simulate my problem?!

Note: The model is highly turbulent.
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Old   May 27, 2012, 18:03
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michael barkhudarov
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Should be ok - have you tried already?
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Old   May 28, 2012, 06:48
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Mahdiar Farhoudi
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yes i tried it, but i didn't get correct outputs.
as it say, densities vary by a significant amount.
The primary problem here is that there is only one (mixture) velocity calculated at each cell face. In reality, because the densities are so different for the two different fluids, there is significant discrepancy between the velocity of the air and the velocity of the water. When the densities of the two fluids differ greatly, i.e., roughly by more than a factor of 10, this mixture velocity may not adequately represent the flow, since velocities of each of the fluids in the same cell can be very different.

did anyone Run such a two-fluid case with air & water??
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