Results 31 to 40 of about 363 (168)
Numerical investigation of labyrinth-shaft spillway
Applied Water Science, 2023 In the present study, a new type of hybrid spillway termed labyrinth-shaft spillway was introduced to improve the discharge capacity and efficiency of the spillway.
M. Cihan Aydin, Ali Emre Ulu
doaj +1 more source
Hydraulic performance of helical-step dropshaft
Water Science and Technology, 2021 Aiming to achieve energy dissipation and prevention of cavitation erosion, a kind of dropshaft in urban drainage systems called the helical-step dropshaft is introduced in this paper.
Weichen Ren +3 more
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Flow patterns in nappe flow regime down low-gradient stepped chutes
Journal of Hydraulic Research, 2009 Although modern gravity dam spillways include often steep chutes operating in skimming flow regime, succession of free-falling nappes (i.e. nappe flow regime) are more common on low gradient chutes and cascades, and this flow situation received little attention to date.
Thorwarth, J. +3 more
openaire +4 more sources
Stepped Spillway Hydraulic Model Investigation
Tikrit Journal of Engineering Sciences, 2006 An experimental hydraulic model investigation was conducted to evaluate the performance of a stepped overflow spillway . The spillway tested has a standard ogee profile with continuous steps cut into a straight portion of downstream face from tangential ...
Jaafar Sadeq Maatooq
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Sultan Qaboos University Journal for Science, 2014 The Batain coast along the northeastern margin of Oman between Ra’s Al-Hadd and Ra’s Jibsch, is comprised of Permian to Late Cretaceous complex stratigraphy in a tectonically deformed area recording Permian rifting to late Cretaceous Tethys closure ...
Iftikhar Ahmed Abbasi +2 more
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Permafrost and Periglacial Processes, EarlyView.ABSTRACT Freeze–thaw processes cause periglacial creep (otherwise known as solifluction) which forms solifluction lobes. These are lobate features characterized by a steep riser (front) and a smooth tread (body). Despite the widespread occurrence of these lobes, the controls on their morphometry remain poorly understood. Research into solifluction lobe
Jil S. van Etten +2 more
wiley +1 more source
Cache‐Cache: Dans les souffles du Grand Fleuve…
Anthropology of Consciousness, EarlyView.ABSTRACT Between ventriloquism and divination, devotion and consecration, an old and sublime marine game unfolds each day, with living breaths shared in the waters of the great river. In Tadoussac, on the north shore of the St. Lawrence Estuary, at the mouth of the Saguenay, the rumor of whales has long resonated.
David Jaclin +3 more
wiley +1 more source
Effects of Y-type spillway lateral contraction ratios on debris-flowpatterns and scour features downriver of a check dam [PDF]
Natural Hazards and Earth System Sciences, 2016 Debris flows often cause devastating damage to property and can injure or kill residents in mountainous areas. The construction of check dams in debris-flow valleys is considered a useful strategy for mitigating the damages downstream.
H. Chen +5 more
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Oxygen Transfer and Energy Dissipation by Nappe and Skimming Flow over Stepped Weir Structure [PDF]
Advances in Computer Science Research, 2016 Oxygen transfer and the energy dissipation by the flow types at the stepped weir structure were performed through hydraulic experiments. Nappe flow occurs at low flow rates and for relatively small step slope. Dominant features of an air pocket, nappe impact and subsequent hydraulic jump occurs. At larger flow rates, skimming flow occurs with formation
Min-Jee Li, Sunjung Kim, Jinhong Kim
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Journal of Metamorphic Geology, EarlyView.ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva +7 more
wiley +1 more source