旋流自吸泵突台结构数值模拟及对性能的影响

doi:10.3969／j.issn.1674—8530.2010.06.004

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Abstract The inner flow field of a rotational flow selfpriming pump was simulated based on large eddy simulation（LES）with threedimensional nonstructural mesh and finite volume method, and proper boundary conditions were determined according to this issue. The commercial CFD software Fluent was applied. The distribution of inner flow field within pump and boss region nearby was obtained. In order to study the influence of boss structure with different parameters, computation of performance prediction was carried out under several different operating conditions, and the performance curves were obtained. According to the numerical results, the relations between the inner flow field within boss region and the overall characteristics were investigated based on the performance curves. The influence of boss structure on performance was revealed by comparing the external characteristics with different boss parameters. It is found that boss structure has greater impact on head and efficiency, but lesser impact on shaft power. The optimal value of boss parameters can be obtained by use of CFD aided design and comparative analysis of performances with different boss structure parameters, which can provide a reference for pump optimal redesign.

Key words： rotational flow selfpriming pump boss large eddy simulation flow computation performance prediction

Received: 14 October 2009 Published: 30 November 2010

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	Articles by authors
	WANG Chun-Lin
	DING
	JIAN
	Shi-Ya-Ting
	吕Ya-Yun
	LI Chang-Jun

Cite this article:

WANG Chun-Lin,DING,JIAN等. Numerical simulation of boss structure and its impact on rotational flow selfpriming pump performance[J]. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(6): 474-478.

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http://zzs.ujs.edu.cn/pgjx/EN/10.3969／j.issn.1674—8530.2010.06.004 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2010/V28/I6/474

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