Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes

Yabin Liu, Lei Tan, Ming Liu, Yue Hao and Yun Xu
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Yabin Liu: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Lei Tan: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Ming Liu: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Yue Hao: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Yun Xu: State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China

Energies, 2017, vol. 10, issue 5, 1-14

Abstract: The energy performance and pressure fluctuations in a centrifugal pump with inlet guide vanes (IGVs) are investigated experimentally and numerically in a prewhirl angle range of ?24° to 24° and in an axial distance range of 280 mm, 380 mm, and 460 mm. The reliability and accuracy of the numerical method are validated by the satisfactory agreement between the experimental data and numerical results. Prewhirl regulation with IGVs can significantly increase the energy performance and broaden the efficient operation range for the centrifugal pump due to the improvement of flow pattern at the impeller inlet. The prewhirl angle has an obvious impact on pump energy performance, and the maximum amplitudes of pressure fluctuations on the blade leading edge of the pressure and suction sides decrease by 69% and 89%, respectively. The axial distance has a slight impact on pump energy performance, but the maximum amplitudes of pressure fluctuations drop by 35.4% on the blade leading edge of pressure side when the axial distance extends from 280 mm to 460 mm.

Keywords: centrifugal pump; inlet guide vane; prewhirl regulation; energy performance; pressure fluctuation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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