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Numerical simulation of solidliquid twophase turbulent flowin submersible axialflow pump |
SHI Wei-Dong , LONG Fei, ZHANG De-Sheng, LENG Hong-Fei, WANG Guo-Tao |
(1.Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China) |
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Abstract The solidliquid twophase turbulent flow in a submersible axialflow pump was simulated by using a softwareFluent with the mixture multiphase flow model,RNG k-ε turbulence model and SIMPLEC algorithm to study the characteristics of such a flow. The results of twophase flow have been compared with those of water flow. The flow patterns at several volume fractions, particle diameters and solid densities were revealed. It is concluded that solid particles mainly accumulate near the leading edge of pressure surface of blades but close to the hub in the flow channels of impeller. Solid particles tend to move to the suction side of blades as their diameter is increased at the same volume fraction. For the particles with the same diameter, as the solid volume fraction is increased, the solid particles on the pressure side tend to move to the blade leading edge and the hub, and those on the suction side tend to move to the outlet of impeller and the hub.
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Received: 10 June 2011
Published: 30 September 2012
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[1]关醒凡.轴流泵与斜流泵:水力模型、设计、实验及工程应用[M].北京:中国宇航出版社,2009.[2]李红,袁寿其,袁建平,等.基于泵内纸浆悬浮液数值计算的纸浆泵设计[J].江苏大学学报:自然科学版,2007,28(1):51-55.Li Hong,Yuan Shouqi,Yuan Jianping, et al. Stock pump design based on numerical simulation of pulp fiber suspension in pump[J].Journal of Jiangsu University:Natural Science Edition,2007,28(1):51-55.(in Chinese)[3]沈宗沼.国内固液两相流泵的设计研究综述[J].流体机械,2006,34(3):32-38.Shen Zongzhao.Design summary of liquidsolid twophase flow pump[J].Fluid Machinery,2006,34(3):32-38.(in Chinese)[4]王福军.计算流体动力学分析——CFD软件原理与应用[M].北京: 清华大学出版社,2004.[5]赵斌娟,袁寿其,刘厚林,等.基于Mixture多相流模型计算双流道泵全流道内的固液两相湍流[J].农业工程学报,2008,24(1):7-12.Zhao Binjuan,Yuan Shouqi,Liu Houlin, et al. Simulation of solidliquid twophase turbulent flow in doublechannel pump based on Mixture model[J].Transactions of the CSAE, 2008,24(1):7-12.(in Chinese)[6]施卫东,冷洪飞,张德胜,等.轴流泵内部流压力脉动性能预测与试验[J].农业机械学报,2011,42(5):44-48.Shi Weidong,Leng Hongfei,Zhang Desheng,et al.Performance prediction and experiment for pressure fluctuation of interior flow in axialflow pump [J].Transactions of the Chinese Society for Agricultural Machinery,2011,42(5):44-48.(in Chinese)[7]Shi Weidong,Zhang Desheng,Guan Xingfan,et al. Numerical and experimental investigation of highefficiency axialflow pump [J].Chinese Journal of Mechanical Engineering,2010,23(1):38-44.[8]Zhang Desheng,Shi Weidong,Chen Bin,et al. Unsteady flow analysis and experimental investigation of axialflow pump[J].Journal of Hydrodynamics,2010,22(1):35-44.[9]沈宗沼,杨定军.液固两相流泵叶轮内流场数值分析与试验研究[J].煤矿机械,2010,31(1):56-59.Shen Zongzhao,Yang Dingjun.Numerical analysis of flow field in impeller and experimental studying for liquidsolid twophase flow pump[J].Coal Mine Machinery,2010,31(1):56-59.(in Chinese)[10]徐永刚.脱硫泵固液两相流数值计算及磨损分析[D]. 镇江:江苏大学流体机械工程技术研究中心,2009. |
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