Abstract：With commercial software FLUENT,two equations standard k-ε turbulence model and SIMPLEC algorithm were adopted to simulate the internal flow-field of a centrifugal pump with single and double volutes.The distribution laws of static pressure field and velocity field were analyzed,and the radial forces were calculated by empirical formula.The comparing analysis indicates that centrifugal pump with single volute may have large pressure difference,which acts on impeller to produce radial forces,in both sides of tongue tip at off-design conditions.Some high speed unsymmetrical flows appear on impeller exit at low flow rates.While centrifugal pump with double volute can effectively improve the energy conversion in volute at off-design conditions,and the flows at low flow rates are more symmetrical,which can reduce the pressure difference and to balance the radical forces.The calculating result indicates that,the design can reduce the radial forces effectively at off-design conditions,the results of numerical simulation can basicly match with existing theory,and also offer some basis for better understanding the double volute pump.
刘建瑞， 徐永刚， 苏起钦， 王董梅. 基于FLUENT的单-双涡室离心泵径向力分析[J]. 排灌机械工程学报, 2009, 27(2): 83-86.
Liu Jianrui,Xu Yonggang,Su Qiqin,Wang Dongmei. Analysis of radial forces in centrifugal pump with single and double volute based on FLUENT. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(2): 83-86.
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