Results 11 to 20 of about 22,970 (166)
Water Science and Engineering, 2011 Free surface flows in macro- and intermediate roughness conditions have a high aeration potential causing the flow characteristics to vary with slopes and discharges.
Stefano Pagliara +2 more
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Predicting Hydraulic Jump Length on Rough Beds Using Data-Driven Models [PDF]
Journal of Rehabilitation in Civil Engineering, 2018 The hydraulic jump can be used for some purpose such as dissipating the flow energy in order to prevent bed erosion; aerating water and facilitating the mixing procedure of chemical that used for water purification.
Payam Khosravinia +2 more
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Impact of bed roughness and sediment permeability on mass exchange across sediment-water interface
Shui kexue jinzhan, 2020 The mass exchange process across sediment-water interface (SWI) plays an important role in contaminant migration and transformation in natural waters. The mass exchange across the SWI for rough bed depends on both bed roughness and sediment permeability.
Jingyu FAN +4 more
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Fluids, 2021 When using point measurement for environmental or sediment laden flows, there is well-recognised risk for not having aligned measurements that causes misinterpretation of the measured velocity data. In reality, these kinds of mismeasurement mainly happen
Jaan H. Pu
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Numerical Simulation of Flow over a Rough Bed [PDF]
Journal of Hydraulic Engineering, 2007 This paper presents results of a direct numerical simulation (DNS) of turbulent flow over the rough bed of an open channel. We consider a hexagonal arrangement of spheres on the channel bed. The depth of flow has been taken as four times the diameter of the spheres and the Reynolds number has been chosen so that the roughness Reynolds number is greater
Singh, K.M. +2 more
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Investigation of Pressure Fluctuations of Hydraulic Jump on Rough Bed [PDF]
علوم و مهندسی آبیاری, 2018 A hydraulic jump is a sudden transition from a supercritical to subcritical flow with a broad range of turbulence Scales. The fluctuating nature of the flow such as oscillations of jump toe position and production of large eddies are visible in pseudo ...
Parastoo Parsamehr +4 more
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PREDICTING MOVABLE BED ROUGHNESS IN COASTAL WATERS [PDF]
Coastal Engineering Proceedings, 2011 Accurately predicting movable bed roughness is essential to the analyses of transport processes, but when the bottom is rippled, as it commonly is in the coastal environment, characterizing the roughness is less straightforward than when the bottom is flat.
Humbyrd, Chelsea Joy, Madsen, Ole S.
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The effect of continuous natural roughness onhydraulic jump characteristics on the stone ramps
مجله آب و خاک, 2017 Introduction: The hydraulic jump happens when flow transfers from supercritical regime to subcritical regime. The hydraulic jump on smooth bed is called the classic hydraulic jump.
M. F. Maghrebi, B. Mirzendehdel
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Grain roughness controls on velocity and bed stress fields around a fully protruding obstacle in supercritical flow [PDF]
Earth Surface DynamicsSupercritical flows in mountain rivers create complex flow-obstacle interactions that govern infrastructure vulnerability and channel morphodynamics, yet current understanding remains focused mostly on smooth-bed assumptions that poorly represent natural
A. Monsalve, A. Monsalve, O. Link
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Numerical Study of the Rough Bed Impact on Energy Dissipation and Cavitation on Chute Spillways
علوم آب و خاک, 2022 Using a rough bed for spillway compare to common dissipation methods such as stilling basins, stepped spillways, ski jumps, and bed elements may be more efficient to boost energy dissipation.
H. Noury Hasanabady +3 more
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