Double-averaged velocity and stress distributions for hydraulically-smooth and transitionally-rough turbulent flows [PDF]
, 2008 Peer ...
Cameron, Stuart M. +2 more
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Rough Correlations: Meta‐Analysis of Roughness Measures in Gravel Bed Rivers [PDF]
Water Resources Research, 2020 AbstractBed roughness height (k) is a key parameter for velocity prediction in open‐channel flows. There is not yet a firm consensus about whether characteristic particle size D84 or (standard deviation of the channel thalweg) better describes k in gravel bed streams.
Xingyu Chen +3 more
openaire +1 more source
Friction dependence of shallow granular flows from discrete particle simulations [PDF]
, 2011 A shallow-layer model for granular flows is completed with a closure relation for the macroscopic bed friction or basal roughness obtained from micro-scale discrete particle simulations of steady flows. We systematically vary the bed friction by changing
Bokhove, Onno +3 more
core +2 more sources
Spatially averaged flows over mobile rough beds : definitions, averaging theorems, and conservation equations [PDF]
, 2013 Peer ...
Ballio, Francesco +3 more
core +1 more source
Aerodynamic roughness of fixed sandy beds [PDF]
Journal of Geophysical Research: Solid Earth, 2001 The nature of interactions between surface winds and sand surfaces that can be characterized by aerodynamic roughness length has important implications for aeolian sediment transport. Here we report the wind tunnel results of systematic tests of the aerodynamic roughness lengths of different sized fixed sand beds at different free‐stream wind ...
Zhibao Dong +4 more
openaire +1 more source
Hydrodynamic investigation of fluvial sediment transport with Soil Protrusion Apparatus (SPA)
Open Engineering, 2014 In order to understand sediment transport process based on knowledge of their soil properties and hydrodynamic behaviour a series of 2D laboratory controlled small-scale experiments were conducted using the Ahlborn sediment mobile bed tank (4.0×0.6×0.2 m)
Jayaratne Ravindra, Salim Sarik
doaj +1 more source
Understanding Laser Powder Bed Fusion Surface Roughness [PDF]
Journal of Manufacturing Science and Engineering, 2020 Abstract Surface roughness is a well-known consequence of additive manufacturing methods, particularly powder bed fusion processes. To properly design parts for additive manufacturing, a comprehensive understanding of the inherent roughness is necessary.
Jacob C. Snyder, Karen A. Thole
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Influence of Right Triangular Prism Rough Beds on Hydraulic Jumps
Applied SciencesA hydraulic jump phenomenon is exciting in turbulent flow as it causes large-scale turbulence and high-energy loss. This paper investigates the hydraulic jump characteristics of right triangular prism rough beds.
Cong Ty Trinh +2 more
doaj +1 more source
Journal of Fundamental and Applied Sciences, 2015 This study has for objective to study the theoretical relation of the hydraulic jump by sill, evolving in an U-shaped channel, with a rough bed. Functional relations, in non-dimensional form, relating the jump characteristics, seeming the effect of the ...
A. Ghomri, M. Debabeche, F. Riguet
doaj +1 more source
Evaluation drag coefficients for circular patch vegetation with different riverbed roughness
Cogent Engineering, 2022 The drag coefficient of a one-line circular patch of emergent sparse vegetation in an open-channel flow or riverbeds with varying bed roughness sizes was experimentally investigated.
Karim R. Gubashi +3 more
doaj +1 more source