Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A Review: Cavitation on Dam Spillway
The spillway is a component of the dam's flow control channel that serves to enhance regulation and boost the flow rate that passes through the spillway building. By rapidly changing local pressure and velocity, surface cracks can cause cavitation damage. Cavitation is defined as the phenomenon where pressure is less than 1 atm, resulting in air bubbles on the building surface, causing holes due to the release of aggregate grains on the construction surface. Unremoved cavitation can endanger the bottom surface of the spillway due to scouring/erosion. Damage to the canal floor due to continuous scouring can cause water to enter through the scour cracks, thus disrupting the stability of the spillway. Hence, this article mainly discusses a cavitation study that was conducted at the dam spillway. Based on the review in this paper, to determine hydraulic cavitation features of a spillway, most research employ prototype observation, physical model observation, and numerical model simulation. Furthermore, more comprehensive results produced by numerical simulations than by actual investigation is proved by previous research reviewed in this paper. However, using both a physical model and a numerical simulation to determine a spillway's hydraulic cavitation characteristics is reliable.
A Review: Cavitation on Dam Spillway
The spillway is a component of the dam's flow control channel that serves to enhance regulation and boost the flow rate that passes through the spillway building. By rapidly changing local pressure and velocity, surface cracks can cause cavitation damage. Cavitation is defined as the phenomenon where pressure is less than 1 atm, resulting in air bubbles on the building surface, causing holes due to the release of aggregate grains on the construction surface. Unremoved cavitation can endanger the bottom surface of the spillway due to scouring/erosion. Damage to the canal floor due to continuous scouring can cause water to enter through the scour cracks, thus disrupting the stability of the spillway. Hence, this article mainly discusses a cavitation study that was conducted at the dam spillway. Based on the review in this paper, to determine hydraulic cavitation features of a spillway, most research employ prototype observation, physical model observation, and numerical model simulation. Furthermore, more comprehensive results produced by numerical simulations than by actual investigation is proved by previous research reviewed in this paper. However, using both a physical model and a numerical simulation to determine a spillway's hydraulic cavitation characteristics is reliable.
A Review: Cavitation on Dam Spillway
Water Res.Develop.Managem.
Mohd Sidek, Lariyah (Herausgeber:in) / Salih, Gasim Hayder Ahmed (Herausgeber:in) / Ahmed, Ali Najah (Herausgeber:in) / Escuder-Bueno, Ignacio (Herausgeber:in) / Basri, Hidayah (Herausgeber:in) / Zanial, Wan Norsyuhada Che Wan (Autor:in) / Zawawi, Mohd Hafiz (Autor:in) / Sidek, Lariyah Mohd (Autor:in) / Abas, Mohamad Aizat (Autor:in) / Dullah, Hayana (Autor:in)
International Conference on Dam Safety Management and Engineering ; 2023 ; Kuala Lumpur, Malaysia
Proceedings of the 2nd International Conference on Dam Safety Management and Engineering ; Kapitel: 58 ; 837-845
05.02.2024
9 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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Guide to protecting spillway structures from cavitation
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Gas transfer, cavitation, and bulking in self-aerated spillway flow
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