Experimental investigation of velocity fluctuations in a radial diffuser pump

被引：4
|
作者：
Feng Jian-jun [1 ,2 ]
Luo Xing-qi [1 ]
Benra, Friedrich-Kar [2 ]
Dohmen, Hans-Josef [2 ]
机构：
[1] Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Peoples R China
[2] Univ Duisburg Essen, Fac Engn, Dept Mech Engn, D-47048 Duisburg, Germany
来源：
JOURNAL OF HYDRODYNAMICS | 2015年 / 27卷 / 03期
基金：
中国国家自然科学基金; 国家教育部博士点专项基金资助;
关键词：
laser Doppler velocimetry (LDV); radial pump; impeller-diffuser interaction; velocity fluctuations; CENTRIFUGAL PUMP; QUANTITATIVE VISUALIZATION; UNSTEADY-FLOW; SIMULATION; IMPELLER; DESIGN; VANES; PIV;
D O I：
10.1016/S1001-6058(15)60490-5
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The strong interaction in a radial pump due to the relative movement between the impeller and the diffuser may excite not only strong pressure fluctuations but also velocity fluctuations. In this paper, the laser Doppler velocimetry (LDV) technique is successfully applied to. measure the periodic flow field in a radial diffuser pump with low-specific speed, in order to investigate the velocity fluctuations caused by the impeller-diffuser interactions both in the impeller and diffuser regions. The velocity fluctuations in the impeller region are quantitatively examined at different radial positions, and the flow structure at the radial gap between two flow components is analyzed at different relative positions. In addition, the downstream effect on the diffuser flow is quantitatively and qualitatively assessed and compared with the turbulence effect.
引用
收藏
页码：332 / 339
页数：8
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