Results 11 to 20 of about 1,349 (263)
Journal of High Energy Physics, 2021 Abstract In traditional models only an order one fraction of energy is transferred from the inflaton to radiation through nonperturbative resonance production in preheating immediately after inflation, due to backreaction effects.
JiJi Fan, Kaloian D. Lozanov, Qianshu Lu
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On the Effect of Block Roughness in Ogee Spillways with Flip Buckets
Fluids, 2020 In this study, the effect of the presence of bed-block roughness in an ogee spillway on energy dissipation and jet length is investigated. A series of experimental and numerical tests were conducted using an ogee spillway with block roughness on the bed ...
Rasoul Daneshfaraz +3 more
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, 2021 Levees are built on many rivers and mountain torrents to protect populations against floods. During medium floods, a well-constructed levee offers sufficient protection without requiring additional hydraulic structures. But this same levee represents a source of danger during high floods, since there is a risk of overtopping.
Degoutte, Gérard, Tourment, Rémy
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Flow Over the Spillway of AlAdhiam Dam Under Gated Condition
Journal of Engineering, 2022 The AlAdhaim Dam is located 133 kilometers northeast of Baghdad. It is a multipurpose dam and joints the Iraqi dam system in 2000. It has a storage capacity of 1.5 billion m3. The dam has an ogee spillway with a length of 562 m, a crest level of 131.5 m.
Maryam H. Azeez, Riyadh Z. Azzubaidi
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Capacity of second spillway of Boguchanskaya HPP [PDF]
E3S Web of Conferences, 2023 The main problem in designing the discharge of water flow from the upstream to the downstream is to ensure the capacity of spillway structures. This article discusses the design options for the design top of the spillway: with water diversion through a ...
Gouriev A. P. +4 more
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LABSKÁ – MODEL RESEARCH OF SHAFT SPILLWAY [PDF]
Civil Engineering Journal, 2017 The article deals with the hydraulic investigation of a shaft spillway on the Labská Dam. A physical model of the right shaft spillway of the Labská Dam was built in the Hydrotechnical Laboratory and placed in the measuring flume.
Martin Králík
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Numerical Investigation of Erosion Wear Characteristics of Hydraulic Spillway
Applied Sciences, 2021 There are many sand-laden waters in China, and the wear of hydraulic structures caused by sand-laden water diversion has been paid more and more attention.
Cong Zhang +4 more
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Effect of Height and Geometry of Stepped Spillway on Inception Point Location
Applied Sciences, 2019 Air entrainment in a stepped spillway is very important to protect the spillway from cavitation damage. The inception point is the location where air starts entering the non-aerated flow zone. The inception point location depends on different parameters,
Wuyi Wan, Awais Raza, Xiaoyi Chen
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Dashijian Reservoir spillway physical shape optimisation design using model experiment
LHB Hydroscience Journal, 2023 In the field of water conservancy engineering, a spillway is a common hydraulic structure that plays a role in flood discharge and dam protection. The selection of the weir surface curve and shape scale of the spillway is significant, and the physical ...
Xiaolei Zhang +4 more
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Uji Model Fisik Bangunan Pelimpah Bendungan Saka Gilas Dengan Skala 1:50
Jurnal Teknik Pengairan, 2019 The physical hydraulic model carried out in the laboratory is intended to determine the hydraulic behavior of the flow in hydraulic structures. The aim of Hydraulic model test of Sakagilas Dam spillway is to determine the flow profile that occurs in ...
Rahmah Dara Lufira +3 more
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