Formula of flow rate decay of submerged jet area in falling-sill bottom-flow energy dissipation
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Abstract:
The flow pattern in the stilling basin of falling-sill bottom-flow energy dissipation was submerged jet and submerged jump mixing flow pattern. In order to understand hydraulic characteristics of the submerged jet region, the mainstream diffusion regularity of submerged jet area and the attenuation rule of mainstream axial maximum mean velocity was analyzed by applying plane turbulent jet theory. Based on the hydraulic model experiments, and the results of previous studies, the research on attenuation rule of the mainstream axial maximum mean velocity of submerged jet area was conducted. Based on the experimental research results, the Semi-empirical formula was deduced, in which the attenuation rule of mainstream axial maximum mean velocity of submerged jet area was controlled by the intake angle.
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