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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Spatially-averaged oscillatory flow over a rough bed [PDF]
, 2008 Peer reviewedPublisher ...
Coleman, Stephen E. +2 more
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Potential application of mesh-free SPH method in turbulent river flows [PDF]
, 2016 A comprehensive review has been completed on the simulation of turbulent flow over rough beds using mesh-free particle models. Based on the outcomes of this review, an improved Smoothed Particle Hydrodynamics (SPH) method has been developed for open ...
A Marion +30 more
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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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Computational fluid dynamics simulation of rough bed open channels using openFOAM
Frontiers in Environmental Science, 2022 With increased flood risk due to climate change, population expansion and urbanisation; robust waterway design and management are critical. One common type of waterway used to gather and transport ground water is the open channel. Most simulations do not
Yun-Hang Cho +3 more
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Effect of the Artificial Bed Roughness’s Shape on Hydraulic Jump’s Characteristics [PDF]
علوم و مهندسی آبیاری, 2018 Hydraulic jumps are the most important type of rapidly variable flow that occur in from the supercritical state to the subcritical state with the sudden increase of the water free surface in a relatively short path, and usually has a high kinetic energy ...
Saeid Salamiasl +2 more
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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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Vertical scales and shear stresses in wave boundary layers over movable beds [PDF]
, 2010 Unified scaling rules are provided for smooth and rough wave boundary layers. It is shown that the rough equivalent of the smooth, or viscous, vertical scale √2v/ω, the Stokes' length, is √0.008rA, where r is the Nikuradse roughness and A is the near-bed
Guard, Paul A., Nielsen, Peter
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Prediction of the hydraulic jump length on sloping rough beds using meta- heuristic neuro-fuzzy model and differential evolution algorithm [PDF]
Journal of Applied Research in Water and Wastewater, 2019 Generally, Hydraulic jumps usually happen at the downstream of hydraulic structures like ogee spillways. In addition, one of the parameters affecting the proper design of stilling basin is calculation of the hydraulic jump length. In this study, a hybrid
Rahim Gerami Moghadam +3 more
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Effect of near‐bed turbulence on chronic detachment of epilithic biofilm: Experimental and modeling approaches. [PDF]
, 2010 The biomass dynamics of epilithic biofilm, a collective term for a complex microorganism community that grows on gravel bed rivers, was investigated by coupling experimental and numerical approaches focusing on epilithic biofilm‐flow interactions.
Ahmed Kettab +65 more
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