SPH modelling of depth‐limited turbulent open channel flows over rough boundaries
Sign Up to like & getrecommendations! Published in 2017 at "International Journal for Numerical Methods in Fluids"
DOI: 10.1002/fld.4248
Abstract: Summary A numerical model based on the smoothed particle hydrodynamics method is developed to simulate depth‐limited turbulent open channel flows over hydraulically rough beds. The 2D Lagrangian form of the Navier–Stokes equations is solved, in… read more here.
Keywords: channel flows; limited turbulent; open channel; model ... See more keywords
Shallow turbulent mixing layers in open-channel flows
Sign Up to like & getrecommendations! Published in 2025 at "Environmental Fluid Mechanics"
DOI: 10.1007/s10652-025-10013-9
Abstract: A mixing layer (ML) forms when two streams of different speeds or densities merge. MLs are ubiquitous in nature and can be often observed in the atmosphere, ocean, rivers, canals, lakes and reservoirs. This review… read more here.
Keywords: open channel; smls; channel flows; shallow turbulent ... See more keywords
Treatments of Micro-channel Flows Revisited: Continuum Versus Rarified Gas Considerations
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The Institution of Engineers (India): Series C"
DOI: 10.1007/s40032-020-00586-3
Abstract: There are numerous treatments of micro-channel flows available that point out the breakdown of the Navier–Stokes equations under molecular flow conditions when continuum conditions should still apply. The wrong conclusion regarding the validity of the… read more here.
Keywords: rarified gas; channel flows; micro channel; treatments micro ... See more keywords
The effect of cube-roughened walls on the response of rough-to-smooth (RTS) turbulent channel flows
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2018.05.008
Abstract: Abstract Direct numerical simulations of cube-roughened rough-to-smooth channel flows are performed with the objective of studying the response of turbulence statistics in the developing flow over smooth walls. Non-equilibrium effects persist and the global recovery… read more here.
Keywords: effect cube; channel flows; response; cube roughened ... See more keywords
Asymmetric reverse transition phenomenon in internal turbulent channel flows due to temperature gradients
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DOI: 10.1016/j.ijthermalsci.2020.106463
Abstract: Abstract Laminarization of a turbulent flow due to wall heating has been known for more than 50 years, to the point that it is sometimes used as means of reducing friction. However this phenomenon has… read more here.
Keywords: channel flows; reverse transition; temperature; moment ... See more keywords
Consistent equations for open-channel flows in the smooth turbulent regime with shearing effects
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.626
Abstract: Consistent equations for turbulent open-channel flows on a smooth bottom are derived using a turbulence model of mixing length and an asymptotic expansion in two layers. A shallow-water scaling is used in an upper –… read more here.
Keywords: channel flows; open channel; flows smooth; consistent equations ... See more keywords
The colour of forcing statistics in resolvent analyses of turbulent channel flows
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2020.802
Abstract: Abstract In resolvent analyses of turbulent channel flows it has been common practice to neglect or model the nonlinear forcing term that forms the input of the resolvent. However, the spatiotemporal structure of this term… read more here.
Keywords: channel flows; turbulent channel; channel; nonlinear forcing ... See more keywords
Mechanisms underlying how free surfaces influence very-large-scale motions in turbulent plane open channel flows based on linear non-modal analysis
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2024.1140
Abstract: Abstract Linear non-modal analyses are performed to study the mechanism of how deformable free surfaces influence very-large-scale motions (VLSMs) in turbulent open channel flows. The mean velocity and eddy viscosity profiles obtained from direct numerical… read more here.
Keywords: open channel; non modal; linear non; channel flows ... See more keywords
Modelling high-Reynolds-number effects in fully developed channel flows using a two-scale Reynolds stress model
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DOI: 10.1017/jfm.2024.984
Abstract: Abstract Reynolds-averaged models for solving the Navier–Stokes equations are implicitly based on Kolmogorov's theory for describing energy transfers between the different turbulent scales, which means that all the energy produced at large scales is transferred… read more here.
Keywords: scale reynolds; high reynolds; two scale; channel flows ... See more keywords
Quantitative Characterization of Streaky Structures in Open-Channel Flows
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DOI: 10.1061/(asce)hy.1943-7900.0001353
Abstract: AbstractStreaky structures have been reported in open-channel flows by various investigations in the inner and outer layer. Although the ubiquity of streaks is well recognized, it remains unclear h... read more here.
Keywords: channel flows; quantitative characterization; open channel; streaky structures ... See more keywords
Scales of turbulence in open-channel flows with low relative submergence
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DOI: 10.1063/1.5127562
Abstract: The present work aims at studying the turbulence structure developed over a highly rough bed in open-channel flows (OCFs) by varying the relative submergence through the use of three sediment sizes ranging from gravels to… read more here.
Keywords: channel flows; submergence; premultiplied spectra; time ... See more keywords