Influence of Support Shapes on the Efficiency of Bulb Tubular Pumps
(0) With the characteristics of high efficiency, small hydraulic loss, compact unit structure, simple construction arrangement and low cost both for construction and operation, bulb tubular pumps are especially suitable for large discharge and low lift head pumping stations of the east route of South to North Water Diversion Project in China. It is important to analyze the flow characteristics and performance of bulb tubular pumps. The flow inside the flow-passage components is threedimensional incompressible turbulence flow. Bulb support unit which including manhole and bottoM support is an important flow-passage component of bulb tubular pumps. In this paper CFD method is used to simulate a bulb tubular pump with different support shapes. Based on the RNG k-ε turbulent model with Wall-Function Law, the SIMPLEC algorithm is applied for the solution of the discretizaton governing equations. The results of the calculation indicate that the shape of support has affected total hydraulic losses of the pump and it also obvious influence on flow pattern. Reasonable support shapes not only improve the turbulent flow, but also reduce circumference velocity.
bulb tubular pump supporting shapes hydraulic loss numerical simulation
Yan Jin Chao Liu Fangping Tang
College of Hydraulic Engineering, Yangzhou University, 131, Jiangyang Middle Road, Weiyang District, Yangzhou University, 88 South University Ave. Yangzhou, Jiangsu 225009, China
国际会议
The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)
北京
英文
301-305
2008-11-25（万方平台首次上网日期，不代表论文的发表时间）