Numerical Simulation of Three Dimensional Turbulent Flow in Double-Suction Centrifugal Pumps

Min Yang (), Fujun Wang and Guohui Cong
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Min Yang: China Agricultural University, Department of Fluid machinery, College of Water Conservancy & Civil Engineering
Fujun Wang: China Agricultural University, Department of Fluid machinery, College of Water Conservancy & Civil Engineering
Guohui Cong: China Agricultural University, Department of Fluid machinery, College of Water Conservancy & Civil Engineering

A chapter in Computational Mechanics, 2007, pp 242-242 from Springer

Abstract: Abstract Double-suction centrifugal pumps are widely used in various fields because the flow rate of those is two times as much as single suction pump with the same diameter impeller and it is theoretically in axial balance. Along with the construction of many large projects, such as Water Transfer Project from South to North in China, the size and capacity of double-suction pump is constantly increasing. The design of those machines is mainly based on experience, and can not fully guarantee the performance of the pump. From the operation of large pump stations, there are general phenomena such as vibration and cavitation. Therefore, it is very imperative to study the internal flow within a double-suction centrifugal pump and provide scientific reference for its structure design and stable operation. This paper describes a numerical study in a double-suction centrifugal pump by using the Reynolds Averaged Navier-Stokes (RANS) approach with the Shear Stress Transport turbulent model (SST) at the different conditions (rated, small and large flow rate). A symmetry condition is employed to provide an easier handling of the geometry. The hydraulic performance is predicted and it is in very good agreement with experimental data. The velocity and pressure distribution in pump are analyzed at the design point and off-design points. Changes of the velocity and the pressure with flow rate are investigated at impeller eye and impeller exit.

Keywords: Hydraulic Performance; Free Surface Flow; Reynolds Average; Water Transfer Project; Scientific Reference (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1007/978-3-540-75999-7_42

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