射流式自吸喷灌泵内部流场的数值分析

doi:10.3969／j.issn.1674—8530.2009.06.002

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Abstract In order to study the effect of the valve and outer pump casing on self-priming irrigation pump efficiency,the inner flow model of 50ZB-25D self-priming irrigation pump was built by three-dimensio-nal modeling software,and the pump efficiency was calculated by FLUENT software under three different conditions:recycling valve closed,recycling valve not used,recycling valve closed but the influence of outer pump casing ignored.To verify the calculation accuracy of pump efficiency with FLUENT,the pump efficiency was tested experimentally.To further study gas-liquid two-phase flow in the pump self-priming process,three-dimensional simulation was performed for the gas-liquid two-phase unsteady turbulent flow by using FLUENT software with Mixture model.The results indicate that the valve has great influence on the self-priming irrigation pump efficiency,but the complexity of the outer pump casing structure has little effect.The numerical results agree favorably with the experimental data with discreparcies less than 3% in efficiency and less than 1.5 meters in head.

Key words： self-priming irrigation pump gas-liquid two-phase flow internal flow field efficiency self-priming performance

Received: 19 August 2009 Published: 30 November 2009

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	Liu-Jian-Rui
	Su-Qi-Qin
	Xu-Yong-Gang
	Wang-Dong-Mei

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Liu-Jian-Rui,Su-Qi-Qin,Xu-Yong-Gang等. Numerical simulation of internal flow field of self-priming irrigation pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(6): 347-351.

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http://zzs.ujs.edu.cn/pgjx/EN/10.3969／j.issn.1674—8530.2009.06.002 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2009/V27/I6/347

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