LAPSE:2020.0050
Published Article
LAPSE:2020.0050
Unsteady Flow Process in Mixed Waterjet Propulsion Pumps with Nozzle Based on Computational Fluid Dynamics
Can Luo, Hao Liu, Li Cheng, Chuan Wang, Weixuan Jiao, Di Zhang
January 7, 2020
The unsteady flow process of waterjet pumps is related to the comprehensive performance and phenomenon of rotating stall and cavitation. To analyze the unsteady flow process on the unsteady condition, a computational domain containing nozzle, impeller, outlet guide vane (OGV), and shaft is established. The surface vortex of the blade is unstable at the valley point of the hydraulic unstable zone. The vortex core and morphological characteristics of the vortex will change in a small range with time. The flow of the best efficiency point and the start point of the hydraulic unstable zone on each turbo surface is relatively stable. At the valley point of the hydraulic unstable zone, the flow and pressure fields are unstable, which causes the flow on each turbo surface to change with time. The hydraulic performance parameters are measured by establishing the double cycle test loop of a waterjet propulsion device compared with numerical simulated data. The verification results show that the numerical simulation method is credible. In this paper, the outcome is helpful to comprehend the unsteady flow mechanism in the pump of waterjet propulsion devices, and improve and benefit their design and comprehensive performance.
Keywords
Computational Fluid Dynamics, test, unsteady flow process, waterjet propulsion pump
Suggested Citation
Luo C, Liu H, Cheng L, Wang C, Jiao W, Zhang D. Unsteady Flow Process in Mixed Waterjet Propulsion Pumps with Nozzle Based on Computational Fluid Dynamics. (2020). LAPSE:2020.0050
Author Affiliations
Luo C: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China; Key Laboratory of Fluid and Power Machinery of Ministry of Education, Xihua University, Chengdu 610039, China
Liu H: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Cheng L: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Wang C: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Jiao W: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Zhang D: College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225009, China
Journal Name
Processes
Volume
7
Issue
12
Article Number
E910
Year
2019
Publication Date
2019-12-03
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr7120910, Publication Type: Journal Article
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LAPSE:2020.0050
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doi:10.3390/pr7120910
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Jan 7, 2020
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Calvin Tsay
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