Effects of Impeller Diameter on High-Speed Rescue Pump
Joint Authors
Bai, Yuxing
Kong, Fanyu
Xia, Bin
Zhao, Fei
Liu, Yingying
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-29
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
Impeller diameter is a crucial design parameter of high-speed rescue pumps because it affects the performance and inner flow characteristics of these pumps.
In this study, a pump with an impeller diameter of 248 mm was modeled and its performance was tested.
Numerical simulations were conducted under steady and unsteady states, in which the sizes of the impeller diameters were designated as 248 mm (original), 235.6 mm (5% trimmed), 223.2 mm (10% trimmed), and 210.8 mm (15% trimmed).
ANSYS software was used to test the shear stress transport (SST k-ω) of the four models, and results agreed well with experimental data.
Diameter size affected impeller characteristics in both steady and unsteady states.
Subsequently, the differences in performance, hydraulic loss, pressure pulsation, and radial force of the impellers were evaluated.
In the performance test, the head and efficiency of the pump decreased as impeller diameter was reduced.
The result trends are in accordance with the trim law within the acceptable error range.
In terms of hydraulic loss, the impeller and diffuser vane components presented opposite trends with flow rate increase.
Finally, in terms of pressure pulsation and radial force, the amplitude diminished while periodicity improved as impeller diameter decreased.
American Psychological Association (APA)
Bai, Yuxing& Kong, Fanyu& Xia, Bin& Zhao, Fei& Liu, Yingying. 2017. Effects of Impeller Diameter on High-Speed Rescue Pump. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1189495
Modern Language Association (MLA)
Bai, Yuxing…[et al.]. Effects of Impeller Diameter on High-Speed Rescue Pump. Mathematical Problems in Engineering No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1189495
American Medical Association (AMA)
Bai, Yuxing& Kong, Fanyu& Xia, Bin& Zhao, Fei& Liu, Yingying. Effects of Impeller Diameter on High-Speed Rescue Pump. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1189495
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189495