Coherent Structures in Wall-Bounded Turbulence
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Fluid Mechanics"
DOI: 10.1007/978-3-319-20388-1_3
Abstract: The current knowledge about some particular kinds of coherent structures in the logarithmic and outer layers of wall-bounded turbulent flows is briefly reviewed. It is shown that a lot has been learned about their geometry,… read more here.
Keywords: structures wall; bounded turbulence; wall bounded; coherent structures ... See more keywords
Statistics of turbulence in the energy-containing range of Taylor–Couette compared to canonical wall-bounded flows
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.625
Abstract: Considering structure functions of the streamwise velocity component in a framework akin to the extended self-similarity hypothesis (ESS), de Silva et al. (J. Fluid Mech., vol. 823, 2017, pp. 498–510) observed that remarkably the large-scale… read more here.
Keywords: taylor couette; canonical wall; energy containing; containing range ... See more keywords
A framework for input–output analysis of wall-bounded shear flows
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.418
Abstract: We propose a new framework to evaluate input–output amplification properties of nonlinear models of wall-bounded shear flows, subject to both square integrable and persistent disturbances. We focus on flows that are spatially invariant in one… read more here.
Keywords: input output; input; shear flows; bounded shear ... See more keywords
Dynamics of shear-layer coherent structures in a forced wall-bounded flow
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DOI: 10.1017/jfm.2020.839
Abstract: Abstract A model problem for analysing the interaction between coherent structures in shear flows with the presence of a convective instability is proposed in this work. Starting from Couette flow, a permanent forcing in the… read more here.
Keywords: wall bounded; bounded flow; flow; coherent structures ... See more keywords
Particle dynamics in wall-bounded thermal counterflow of superfluid helium
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DOI: 10.1063/1.4984913
Abstract: The motions of relatively small particles in wall-bounded thermal counterflow of superfluid helium are experimentally investigated, above 1 K, by using the particle tracking velocimetry technique. The effect of a solid boundary on this quantum… read more here.
Keywords: wall bounded; counterflow superfluid; bounded thermal; wall ... See more keywords
Direct simulation of stably stratified wall-bounded turbulence using the lattice Boltzmann method
Sign Up to like & getrecommendations! Published in 2023 at "Physics of Fluids"
DOI: 10.1063/5.0147475
Abstract: The lattice Boltzmann method (LBM) is employed to simulate stratified plane Couette (SPC) flows in their statistically stationary turbulent state. The aim is to assess the suitability of the LBM for direct simulation of wall-bounded,… read more here.
Keywords: wall; wall bounded; boltzmann method; lattice boltzmann ... See more keywords
On the prediction capabilities of two SGS models for large-eddy simulations of turbulent incompressible wall-bounded flows in OpenFOAM
Sign Up to like & getrecommendations! Published in 2019 at "Cogent Engineering"
DOI: 10.1080/23311916.2019.1679067
Abstract: Abstract A comprehensive evaluation of the prediction capabilities of two Sub-Grid-Scale (SGS) models, for Large-Eddy Simulations (LES) of incompressible turbulent flows, is performed by studying two cases of flows through wall-bounded domains: a standard smooth-wall… read more here.
Keywords: sgs models; capabilities two; prediction capabilities; wall bounded ... See more keywords
Self-sustaining processes at all scales in wall-bounded turbulent shear flows
Sign Up to like & getrecommendations! Published in 2017 at "Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences"
DOI: 10.1098/rsta.2016.0088
Abstract: We collect and discuss the results of our recent studies which show evidence of the existence of a whole family of self-sustaining motions in wall-bounded turbulent shear flows with scales ranging from those of buffer-layer… read more here.
Keywords: bounded turbulent; shear flows; turbulent shear; wall bounded ... See more keywords
Efficiency of laminar and turbulent mixing in wall-bounded flows.
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DOI: 10.1103/physreve.101.043104
Abstract: A turbulent flow mixes in general more rapidly a passive scalar than a laminar flow does. From an energetic point of view, for statistically homogeneous or periodic flows, the laminar regime is more efficient. However,… read more here.
Keywords: laminar turbulent; efficiency; wall bounded; turbulent ... See more keywords
Aerodynamically driven motion of a wall-bounded drop on a smooth solid substrate
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Fluids"
DOI: 10.1103/physrevfluids.4.024001
Abstract: The motion of wall-bounded drops moving on solid substrates driven by a fully turbulent channel flow is experimentally investigated. A scaling is found to describe the dimensionless drop velocity in terms of a dimensionless flow… read more here.
Keywords: aerodynamically driven; motion wall; drop; wall bounded ... See more keywords