In order to study flow pattern and hydraulic performance of vertical pumping station with bell inlet and worm outlet, which was used by South-to-North water transfers project, the incompressible N-S equations are solved by the control finite volume method. Based on the RNG k-ε model with Wall-Function Law, the SIMPLEC algorithm is applied for the solution of the discretization governing equations. Using multiple reference frames, the flow detail of whole vertical pumping system is attained. The named height of pump is put forward. The numerical hydraulic performance was computed. A good agreement was achieved between predicted data with experimental data on BEP. This type of pumping station will be applied in the East Route Project of South-to-North Water Transfers of China.

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