Results 221 to 230 of about 18,374 (266)

Continuous‐Flow Surface Aeration Systems

Chemical Engineering & Technology, 2010
AbstractAn aeration process in an activated sludge plant is a continuous‐flow system. In this system, there is a steady input flow (flow from the primary clarifier or settling tank with some part from the secondary clarifier or secondary settling tank) and output flow connection to the secondary clarifier or settling tank.
B. Kumar, A. R. Rao
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Developing Zone Characteristics in Aerated Flows

Journal of the Hydraulics Division, 1978
A knowlegde of air concentration distribution is very essential in the study of flow characteristics in the developing zone. The local mean air concentration along the flow is correlated with Froude number. The developing zone is classified into a dispersion zone and a diffusion zone based on the variation of wall concentration.
Thandaveswara, BS, Rao, Nagar Lakshmana S   +1 more
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Flow aeration at stepped cascades [PDF]

, 1997
In storm waterways, at dam outlets and in water treatment plants, it is common to design stepped waterways and cascades nowadays. Stepped channel flows are characterised by a substantial flow aeration (i.e. 'white water') and there is presently little information on the air-water flow characteristics.
Chanson, Hubert, Toombes, Luke
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Uniform Aerated Chute Flow

Journal of Hydraulic Engineering, 1991
Uniform flow with natural air entrainment on spillway chutes is considered. Based on the experimental data of Straub and Anderson, the air-concentration profiles are first investigated. A similarity plot is presented, which unifies the data pertaining to various chute slopes. First, an expression for the average air concentration is deduced. The latter
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Measuring bubble size in aerated flow

Journal of Hydrodynamics, 2006
Abstract The effect of reducing cavitation damage in high-speed flow structure not only relate with entrained air concentration, but also relate with air bubble density has been discovered in recent research. The air bubbles in aerated flow with diameter below then 0.2mm or 0.5mm plays important role in reducing cavitation damage.
Xian-Pu CHEN, Dong-Chao SHAO
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Cavity flow regime for spillway aerators

Science China Technological Sciences, 2013
It is well known that the effect of air entrainment for cavitation damage controls is related not only to the air discharge into aerator devices but also the flow regime of the cavity below them. On the basis of the hydraulic characteristics of the flow, the aerator devices were for the first time classified.
JianHua Wu, Fei Ma
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Chute Aerators: Preaerated Approach Flow

Journal of Hydraulic Engineering, 2011
Long spillways often include more than one chute aerator to assure an appropriate cavitation protection. The first aerator guarantees sufficient bottom air concentration along a limited streamwise distance attributed to deaeration. Further downstream, the air concentration may be insufficient to protect the chute from cavitation damage. There, a second
Pfister, Michael, Lucas, Jill, Hager, Willi H.   +2 more
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Flow aeration and surface fluctuations in moderate-slope stepped chute: from aeration inception to fully developed aerated flow

Journal of Hydraulic Research, 2022
Hang Wang, Zhongtian Bai, Xuechun Liu, Ruidi Bai, Shanjun Liu   +4 more
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On the incipient aerated flow in chutes and spillways

Journal of Hydraulic Research, 2002
Natural self-aeration of water flows in open channels protects surfaces in contact with the flow from cavitation damage if enough air content is reached (Falvey [6] [7], Peterka [10], Russel & Sheenan [11]), although it could lead to an increase in both flow depth and velocity.
Antonio Monino Ferrando, Jaime Riera Rico   +1 more
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Forced aeration of high velocity flows

Journal of Hydraulic Research, 1987
An attempt is made to structure and unify a sizable amount of valuable but dispersed information in the relatively new field of forced aeration. This concept materialized as a measure to prevent cavitation in hydraulic structures with high velocity flows.
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