Experimental and Numerical Studies on Flow Characteristics of Centrifugal Pump under Air-water Inflow

Qiaorui Si; Wenting He; Gerard Bois; Qianglei Cui; Shouqi Yuan; Keyu Zhang

doi:10.5293/IJFMS.2019.12.1.031

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자료유형: 학술저널

저자정보: Qiaorui Si (Jiangsu University) Wenting He (Jiangsu University) Gerard Bois (Arts et Métiers ParisTech) Qianglei Cui (Jiangsu University) Shouqi Yuan (Jiangsu University) Keyu Zhang (SAIC Motor)

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.12 No.1

발행연도: 2019.3

수록면: 31 - 38 (8page)

DOI: 10.5293/IJFMS.2019.12.1.031

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A two-phase liquid pumping test ring is built to study the flow induced characteristics of centrifugal pump under the air-water flow working condition. Pump performances are measured under different flow rates and different inlet air void fraction (a). Pressure pulsation signal spectrums and their probability density maps are also recorded. The calculations, using URANS k-epsilon turbulence model combined with the Euler-Euler inhomogeneous two-phase model, are also performed to obtain inner flow structure inside the impeller and volute channels under different air-water conditions in order to understand the pump characteristic evolutions. The results show that the performance of centrifugal pump is more sensitive to air inlet injection at low flow rates. The maximum air void fraction of model pump could reach 10% when the pump operates at the highest efficiency point, and the performance drops sharply when the air void fraction is more than 8%. The dominant frequency of pump outlet pressure pulsation is still at the blade passing frequency even under two-phase condition. Frequency amplitude increases with the increase of a. The greater the a, the more of low frequency appears in broadband characteristics. With the increase of a, the probability density amplitude of pressure pulsation decreases gradually, and its span becomes gradually wider as well. Comparisons between numerical local results and experimental unsteady pressure can explain part of the phenomena that are found in the present paper.

#two phase flow #centrifugal pump #flow characteristic #Euler-Euler inhomogeneous model

참고문헌 (25)

참고문헌 신청

Murakami, M. / 1974 / Effects of Entrained Air on the Performance of Centrifugal Pumps: 2nd Report, Effects of Number of Blades / Bulletin of JSME 40(330):459~470

Chisely, E. A. / 1997 / Two-phase Flow Centrifugal Pump Performance / Dissertation Abstracts International 58-07(Section: B):3901

Sato, S. / 2008 / Air-water Two-Phase Flow Performance of Centrifugal Pump Impellers with Various Blade Angles / Bulletin of the JSME 39(2):223~229

Pak, E. T. / 1998 / Performance and Pressure Distribution Changes in a Centrifugal Pump under Two-phase Flow / Proceedings of the Institution of Mechanical Engineers. Part A. Journal of Power & Energy 212(3):165~171

Romero, M. / 1999 / An Evaluation of an Electrical Submersible Pumping System for High GOR Wells

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