Numerical Investigation of Pressure Fluctuation Characteristics in a Centrifugal Pump with Variable Axial Clearance
Joint Authors
Cao, Lei
Xiao, Yexiang
Luo, Yongyao
Zheng-wei, Wang
Source
International Journal of Rotating Machinery
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-04-26
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Clearance flows in the sidewall gaps of centrifugal pumps are unsteady as well as main flows in the volute casing and impeller, which may cause vibration and noise, and the corresponding pressure fluctuations are related to the axial clearance size.
In this paper, unsteady numerical simulations were conducted to predict the unsteady flows within the entire flow passage of a centrifugal pump operating in the design condition.
Pressure fluctuation characteristics in the volute casing, impeller, and sidewall gaps were investigated with three axial clearance sizes.
Results show that an axial clearance variation affects the pressure fluctuation characteristics in each flow domain by different degree.
The greatest pressure fluctuation occurs at the blade pressure surface and is almost not influenced by the axial clearance variation which has a certainly effect on the pressure fluctuation characteristics around the tongue.
The maximum pressure fluctuation amplitude in the sidewall gaps is larger than that in the volute casing, and different spectrum characteristics show up in the three models due to the interaction between the clearance flow and the main flow as well as the rotor-stator interaction.
Therefore, clearance flow should be taken into consideration in the hydraulic design of centrifugal pumps.
American Psychological Association (APA)
Cao, Lei& Zheng-wei, Wang& Xiao, Yexiang& Luo, Yongyao. 2016. Numerical Investigation of Pressure Fluctuation Characteristics in a Centrifugal Pump with Variable Axial Clearance. International Journal of Rotating Machinery،Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1107054
Modern Language Association (MLA)
Cao, Lei…[et al.]. Numerical Investigation of Pressure Fluctuation Characteristics in a Centrifugal Pump with Variable Axial Clearance. International Journal of Rotating Machinery No. 2016 (2016), pp.1-11.
https://search.emarefa.net/detail/BIM-1107054
American Medical Association (AMA)
Cao, Lei& Zheng-wei, Wang& Xiao, Yexiang& Luo, Yongyao. Numerical Investigation of Pressure Fluctuation Characteristics in a Centrifugal Pump with Variable Axial Clearance. International Journal of Rotating Machinery. 2016. Vol. 2016, no. 2016, pp.1-11.
https://search.emarefa.net/detail/BIM-1107054
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1107054