Results 271 to 280 of about 58,723 (313)

Flow and transport in channels with submerged vegetation

Acta Geophysica, 2008
This paper reviews recent work on flow and transport in channels with submerged vegetation, including discussions of turbulence structure, mean velocity profiles, and dispersion. For submerged canopies of sufficient density, the dominant characteristic of the flow is the generation of a shear-layer at the top of the canopy.
Heidi Nepf, Marco Ghisalberti
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Investigation of Submerged Debris Flows

2017
This chapter presents a numerical investigation of submerged debris flows using the DEM–CFD coupling model. The same DEM model configuration for granular column collapse as that discussed in Chap. 3 has been used in this research to simulate the mechanical behaviour of solid particles, while an incompressible, viscous fluid flow model has been ...
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Flow regimes in submerged gas injection

Metallurgical Transactions B, 1979
The behavior of gas discharging into a liquid has been investigated in the labora-tory and in plant. The laboratory work has involved the injection of different gases from a submerged, horizontal tuyere into water, zinc-chloride solution, and a mercury bath.
E. O. Hoefele, J. K. Brimacombe
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Hydrodynamics of a rigid submerged vegetated flow

Physics of Fluids
In this paper, the local flow and turbulence characteristics of rigid submerged vegetated flow are studied using the double-averaging methodology. Experimental results indicate that the double-averaged streamwise velocity profile above the canopy follows a logarithmic law, while the canopy-induced drag significantly reduces the velocity through the ...
Aishwarya Malothu, Mohammad Saud Afzal, Nadia Penna, Ellora Padhi, Roberto Gaudio, Subhasish Dey   +5 more
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Submerged Flow Characteristics of Throatless Flume

Journal of Irrigation and Drainage Engineering, 1988
The submerged flow discharge characteristics of throatless flumes are derived on the basis of a semi‐empirical analysis. A pressure correction factor is determined experimentally to account for the non‐hydrostatic pressure distribution at the throat section of the flume which acts as a control.
Amruther S. Ramamurthy, Ngoc Diep Vo, R. Balachandar   +2 more
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Turbulent flow with small relative submergence

1991
The turbulent structure of flow with small relative submergence, which should be clarified for advanced study of sediment transport in mountain rivers, is different from that with sufficient relative submergence which is familiar to us according to the recent development of research of turbulent open channel flow. In this study, in order to clarify and
Hiroji Nakagawa, Tetsuro Tsujimoto, Yoshihiko Shimizu   +2 more
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Measuring the flow resistance of submerged grass

Hydrological Processes, 2002
AbstractThrough laboratory experiments conducted in a grass‐lined flume, the hydraulic resistance of grass is measured and quantified. For the grass examined, it is found that Manning's n value is greater than those recommended in well‐established texts such as Chow (1959. Open Channel Flow.
C. A. M. E. Wilson, M. S. Horritt
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Flow Analysis Around a Submerged Groyne

2009
Groyne is a structure protruding into a channel from the bank to protect the channel bank by reducing flow velocity along the bank and control flow direction for navigation. Recently, one more function (environmental function) was added. It can be used as aquatic habitat and shelter during the flood by making the recirculation zone along the bank in ...
HongKoo Yeo, JoonGu Kang
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Flow through Partially Submerged Orifice

Journal of Irrigation and Drainage Engineering, 2017
AbstractVertically mounted circular orifices have been extensively used for flow measurements. The operation of a side orifice is not always under a high headwater above the crown of the orifice, a...
James C. Y. Guo, Ryan P. Stitt
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Free surface flows over submerged obstructions. [PDF]

, 2015
Steady and unsteady two-dimensional free surface flows subjected to one or multiple disturbances are considered. Flow configurations involving either a single fluid or two layers of fluid of different but constant densities, are examined. Both the effects of gravity and surface tension are included. Fully nonlinear boundary integral equation techniques
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