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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 CHARACTERISTICS OF SKIMMING FLOW IN A STEPPED CHANNEL
PROCEEDINGS OF HYDRAULIC ENGINEERING, 2004 Recently, research onto the hydraulics of stepped chutes was driven by needs for better design guidelines (OHTSU and YASUDA 1997, CHANSON and TOOMBES 2002, BOES and HAGER 2003). Although stepped channel flows are characterized by intense turbulence and strong flow aeration, most studies did not investigate the turbulence characteristics. In this study,
YASUDA, Youichi +2 more
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Turbulence characteristics in skimming flows on stepped spillways [PDF]
Canadian Journal of Civil Engineering, 2008 The stepped spillway design is characterized by an increase in the rate of energy dissipation on the chute associated with a reduction of the size of the downstream energy dissipation system. This study presents a thorough investigation of the air–water flow properties in skimming flows with a focus on the turbulent characteristics.
Carosi, Giovanna, Chanson, Hubert
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Modelling atmospheric dry deposition in urban areas using an urban canopy approach [PDF]
Geoscientific Model Development, 2015 Atmospheric dry deposition is typically modelled using an average roughness length, which depends on land use. This classical roughness-length approach cannot account for the spatial variability of dry deposition in complex settings such as urban ...
N. Cherin +3 more
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Zanco Journal of Pure and Applied Sciences, 2019 DOI: https://doi.org/ Keywords: Abstract Stepped cascades have obtained much attentiveness by engineers in hydraulic field from multiple sides as its high production in losing energy and simplicity of construction, mostly after spreading of RCC in ...
Shawnm Mudhafar Saleh, Sarhang M. Husain
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ANALYSIS OF NON-UNIFORM-AEREATED SKIMMING FLOWS IN STEPPED CHANNELS [PDF]
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering), 2013 For the hydraulic design of steep stepped channels, it is important to elucidate the aerated flow characteristics of skimming flows both in nonuniform and quasi-uniform flows. For the nonuniform aerated flow region, an analytical equation for calculation of the aerated flow depth is developed, and the surface profile and specific energy are calculated ...
Takahashi, M., Ohtsu, I.
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Aeration characteristics for skimming flow along the pre-aerator stepped spillways
Shui kexue jinzhan, 2014 Pre-aerator stepped spillways,where the aerator is placed prior to the primary step in the stepped spillway,can form a cavity chamber at the bottom to produce enough aeration concentration to avoid the cavitation erosion.
LIU Shanjun +5 more
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Investigation of the effects of some processing conditions on the fate of oxytetracycline and tylosin antibiotics in the making of commonly consumed cheeses from the East Mediterranean [PDF]
Veterinary World, 2021 Background and Aim: Transfer of antibiotics from raw milk to derived products is directly related to the processes involved in the manufacturing of dairy products, including East Mediterranean cheeses, since these have particular flow diagrams of ...
Hussein F. Hassan +8 more
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Hydraulics of skimming flows over stepped channels and spillways [PDF]
Journal of Hydraulic Research, 1994 Stepped channel applications include a broad range of domains. A detailed review (past and present) was published by the author (Chanson 1995). To date most studies on gepped chutes applies to gradually variedflows in rectangular prismatic channels with horizontal. The three-dimensional features of stepped chute flows are not accounted.
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Numerical investigation of air-entrainment in skimming flow over stepped spillways
Theoretical and Applied Mechanics Letters, 2016 As a widely used flood energy dissipator, the stepped spillway can significantly dissipate the kinetic or hydraulic energy due to the air-entrainment in skimming flow over the steps.
Jiemin Zhan, Jianbo Zhang, Yejun Gong
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