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- W2331288670 abstract "This paper develops a CFD model using an ensemble-averaged form of the Eulerian two-fluid equations and a RNG k-ε model. In the frame of the Eulerian model simulation, the local morphology of the phases has to be considered in the drag model. For example, the air is a dispersed phase (bubble) below the water level but a continuous phase above the water level. An improved drag model applies a drag coefficient for bubbles and a different drag coefficient for the free surface or gas cavity. The influences of various drag coefficients, bubbles diameter and bubbles distributions for air entrainment are discussed. It is found that air entrainment and air-water velocity can be adapted via these parameters. With fitting parameter values, the results showed that Eulerian model with the improved drag force model for predicting the air void fraction distributions and velocity profiles were suitable. There was a good agreement between modeled and measured results. The numerical model reproduces favorably the experimental results, giving a possible optimization tool for modeling air-water two-phase flow with high air concentration and turbulence." @default.
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- W2331288670 date "2011-05-19" @default.
- W2331288670 modified "2023-09-24" @default.
- W2331288670 title "Applying Improved Eulerian Model for Simulation of Air-Water Flow in a Hydraulic Jump" @default.
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- W2331288670 doi "https://doi.org/10.1061/41173(414)406" @default.
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