新型自吸离心泵数值模拟及试验研究

doi:10.3969／j.issn.1674—8530.2011.06.005

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Abstract Based on CFD software Fluent,the flow field of a selfpriming centrifugal pump with deflector and jet nozzle was simulated numerically. The internal flow field variables such as velocity vector,static and total pressures were analyzed,and the pump efficiency was predicted.The numerical simulation showed that the velocity vector distribution in the pump is smooth,the static pressure distribution at the two outlets of the new type deflector is uniform and the pressure in each channel is close to an axisymmetric distribution.At the design point the pump head and efficiency predicted are higher than observations by 6.9% and 0.5%,respectively. The performance curve predicted is quite similar to that measured.The experimental results showed that the performance curve of the pump is flat andthe pump has an expanded high efficiency zone.The entire technical specifications of the pump have met the design requirements; also the efficiency is better by 16.34% than the imported pumps with the same specifications.To reduce weight and cost the pump casing is made of die casting aluminium alloy,causing the pump is featured with reasonable design,novel structure,small size,light weight,reliable operation and easy for use.

Key words： self priming centrifugal pump deflector flow field numerical simulation efficiency

Received: 02 October 2011 Published: 30 November 2011

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	MA Dong-Qi

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MA Dong-Qi. Numerical simulation and experiment research on new type self priming centrifugal pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(6): 483-486.

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http://zzs.ujs.edu.cn/pgjx/EN/10.3969／j.issn.1674—8530.2011.06.005 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2011/V29/I6/483

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