Pressure Fluctuation of the Low Specific Speed Centrifugal Pump

Qiang Fu; Shou Qi Yuan; Rong Sheng Zhu

doi:10.4028/www.scientific.net/AMM.152-154.935

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 152-154Pressure Fluctuation of the Low Specific Speed...

Pressure Fluctuation of the Low Specific Speed Centrifugal Pump

Abstract:

In order to study the rules of pressure fluctuation and the radial force under different positions in a centrifugal pump with low specific speed, and to find the relationship between each other, the three-dimensional ,unsteady Reynolds-averaged Navier-stokes equations with shear stress transport turbulent models were solved. The pressure fluctuation was obtained. The results showed that the pressure fluctuations were visible. The pressure fluctuations in the volute were relatively low at the design flow rate condition. The blade passing frequency dominates the pressure fluctuations, high frequency contents were found on the outlet of impeller but no high frequency information occured in casing. The radial force on the impeller was unsteady especially at the small flow rate.

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Periodical:

Applied Mechanics and Materials (Volumes 152-154)

Pages:

935-939

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.152-154.935

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Online since:

January 2012

Authors:

Qiang Fu, Shou Qi Yuan, Rong Sheng Zhu

Keywords:

Frequency-Domain Analysis, Low Specific Speed Centrifugal Pump, Pressure Fluctuation

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