Numerical simulation on rectification measure of inverted T-shaped sill at forebay of pump station
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Abstract:
In order to rectify the bad flow pattern at the forebay of the pump station, in this paper we conducted numerical simulation of the forebay with inverted T-shaped sill based on the Fluent software using the N-S equation and Reliable k-ε turbulence model, and analyzed the influence of the geometrical parameters of the sill on the flow pattern and lateral flow velocity at the forebay. The results showed that without the rectification measure, the flow pattern at the forebay was turbulent. Adding an inverted T-shaped sill could significantly increase the flow rate of the side unit and improve the uniformity of the velocity distribution at the forebay . The location parameter and superstructure size of the inverted T-shaped sill had significant influence on the flow pattern at the forebay . The recommended location of the inverted T-shaped sill is 7.5D to the entrance of the intake pool. The recommended superstructure is 0.4H high and 0.1B wide.
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