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1. Research on Coanda effect of surface jet by Remold Stress Model | |||
FU Xiaoli | |||
Hydraulic Engineering 07 November 2012 | |||
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Abstract:In this paper, Coanda effect is observed to attract the water to free surface. A surface jet attracts water from the surroundings and the phenomenon is called water entrainment, which is found to be resulting from one of the combined effects-Coanda effect. To capture these surface currents several turbulence model are used. In this paper, two isotropic and anisotropic turbulent models (standard k-ε, Realizable k-ε and RSM) are employed with different boundary conditions to compare with the experimental data. The simulated results indicated Realizable k- ε and standard are unable to capture streamwise vorticity and surface current. The RSM with proper boundary condition is proved to have good agreement with experimental data and to predict the Coanda effect best. The results showed that an anisotropic RANS model with the appropriate boundary conditions can give good results for the surface jets, at least for this simple geometry. It also can predict the Coanda effect more properly than the isotropic models. | |||
TO cite this article:FU Xiaoli. Research on Coanda effect of surface jet by Remold Stress Model[OL].[ 7 November 2012] http://en.paper.edu.cn/en_releasepaper/content/4494487 |
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