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Numerical Prediction and Risk Analysis of Hydraulic Cavitation Damage in a High-Speed-Flow Spillway
Joint Authors
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-30
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Hydraulic cavitation is usually an undesirable phenomenon since it can damage the concrete surface of a chute spillway.
In order to numerically predict the potential cavitation of a high-speed flow in a chute spillway, a compound risk assessment is proposed by combining probabilistic analysis with a computational fluid dynamics (CFD) technique.
Based on the local pressure and flow velocity of the nodes, the traditional cavitation number is introduced to characterize the possibility of cavitation.
The distribution of cavitation numbers was obtained according to the numerical simulation of the flow field in an open spillway.
A hydraulic experiment was conducted to validate the numerical result.
As a result, the potential cavitation region could be shown by visualizing the numerical result.
Comparing the numerical results with the experimental results, hydraulic model validates the numerical simulation.
The proposed numerical approach is economical and saves time; moreover, it can provide greater information about the potential cavitation region.
This approach is more convenient for designers in their efforts to optimize the spillway shape and protect the concrete structure from cavitation erosion while maintaining lower costs and achieving higher visualization.
American Psychological Association (APA)
Wan, Wuyi& Liu, Bin& Raza, Awais. 2018. Numerical Prediction and Risk Analysis of Hydraulic Cavitation Damage in a High-Speed-Flow Spillway. Shock and Vibration،Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1215068
Modern Language Association (MLA)
Wan, Wuyi…[et al.]. Numerical Prediction and Risk Analysis of Hydraulic Cavitation Damage in a High-Speed-Flow Spillway. Shock and Vibration No. 2018 (2018), pp.1-11.
https://search.emarefa.net/detail/BIM-1215068
American Medical Association (AMA)
Wan, Wuyi& Liu, Bin& Raza, Awais. Numerical Prediction and Risk Analysis of Hydraulic Cavitation Damage in a High-Speed-Flow Spillway. Shock and Vibration. 2018. Vol. 2018, no. 2018, pp.1-11.
https://search.emarefa.net/detail/BIM-1215068
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1215068