Lattice Boltzmann simulations of high-order statistics in isotropic turbulent flows
Sign Up to like & getrecommendations! Published in 2017 at "Applied Mathematics and Mechanics"
DOI: 10.1007/s10483-018-2254-9
Abstract: The lattice Boltzmann method (LBM) is coupled with the multiple-relaxation-time (MRT) collision model and the three-dimensional 19-discrete-velocity (D3Q19) model to resolve intermittent behaviors on small scales in isotropic turbulent flows. The high-order scaling exponents of… read more here.
Keywords: turbulent flows; velocity; lattice boltzmann; high order ... See more keywords
Isogeometric divergence-conforming variational multiscale formulation of incompressible turbulent flows
Sign Up to like & getrecommendations! Published in 2017 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2016.10.015
Abstract: A new residual-based variational multiscale (RBVMS) formulation for incompressible turbulent flows is proposed that is suitable for discretization using divergence-conforming B-splines. The proposed methodology results in a pointwise satisfaction of the zero-divergence constraint on the… read more here.
Keywords: turbulent flows; formulation; divergence; incompressible turbulent ... See more keywords
Power performance assessment of H-rotor vertical axis wind turbines with different aspect ratios in turbulent flows via experiments
Sign Up to like & getrecommendations! Published in 2019 at "Energy"
DOI: 10.1016/j.energy.2019.01.140
Abstract: Abstract Vertical axis wind turbines (VAWTs) are suitable for applications in urban areas. Their ultimate power production relies on both the structural parameters and wind conditions. In this study, the power performance of H-rotor VAWTs… read more here.
Keywords: rotor; turbulent flows; power performance; power ... See more keywords
Direct numerical simulation of liquid metal free-surface turbulent flows imposed on wall-normal magnetic field
Sign Up to like & getrecommendations! Published in 2018 at "Fusion Engineering and Design"
DOI: 10.1016/j.fusengdes.2018.04.041
Abstract: Abstract To investigate Magneto-Hydro-Dynamics (MHD) effects on structures of turbulence near a free surface, Direct Numerical Simulations (DNS) of free surface turbulent flows imposed on a wall-normal magnetic field were conducted under the friction Reynolds… read more here.
Keywords: surface; free surface; turbulent flows; surface turbulent ... See more keywords
Sliding Mode Control for Turbulent Flows
Sign Up to like & getrecommendations! Published in 2017 at "IFAC-PapersOnLine"
DOI: 10.1016/j.ifacol.2017.08.554
Abstract: The control of turbulent flows is a growing field with major interest, such as in aeronautical industries. This paper deals with the control of a flow separation. The dynamical model of the flow is identified… read more here.
Keywords: sliding mode; control turbulent; control; turbulent flows ... See more keywords
Large eddy simulations of the turbulent flows of twin parallel jets
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2018.10.069
Abstract: Abstract Turbulent jet interactions play a significant role in terms of momentum and heat transfer. For example, in next generation nuclear reactors, high temperature flow mixing in the lower plenum and mixing fluctuations in the… read more here.
Keywords: turbulent flows; eddy simulations; large eddy; twin parallel ... See more keywords
Drag reduction in turbulent flows by diutan gum: A very stable natural drag reducer
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Non-newtonian Fluid Mechanics"
DOI: 10.1016/j.jnnfm.2019.104223
Abstract: Abstract We study the ability of diutan gum (DG), a polysaccharide that belongs to a class called sphingans, to improve drag reduction (DR) in turbulent flows. This new drag reducer is very stable. Its efficiency… read more here.
Keywords: diutan gum; reduction turbulent; turbulent flows; drag reducer ... See more keywords
Lattice Boltzmann method and RANS approach for simulation of turbulent flows and particle transport and deposition
Sign Up to like & getrecommendations! Published in 2017 at "Particuology"
DOI: 10.1016/j.partic.2016.02.004
Abstract: Abstract Using the lattice-Boltzmann computational approach in conjunction with the Reynolds averaged Navier–Stokes (RANS) model, several turbulent flows and the transport and deposition of particles in different passages were studied. The new lattice Boltzmann method… read more here.
Keywords: transport deposition; turbulent flows; transport; lattice boltzmann ... See more keywords
Cascades and transitions in turbulent flows
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DOI: 10.1016/j.physrep.2018.08.001
Abstract: Turbulence is characterized by the non-linear cascades of energy and other inviscid invariants across a huge range of scales, from where they are injected to where they are dissipated. Recently, new experimental, numerical and theoretical… read more here.
Keywords: energy; turbulent flows; turbulence; direct inverse ... See more keywords
Helicoidal particles in turbulent flows with multi-scale helical injection
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.237
Abstract: We present numerical and theoretical results concerning the properties of turbulent flows with strong multi-scale helical injection. We perform direct numerical simulations of the Navier–Stokes equations under a random helical stirring with power-law spectrum and… read more here.
Keywords: turbulent flows; multi scale; helicity; scale helical ... See more keywords
Extreme events and non-Kolmogorov $-5/3$ spectra in turbulent flows behind two side-by-side square cylinders
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2019.456
Abstract: Turbulent flows behind two side-by-side square cylinders with three different gap ratios, namely, $L_{d}/T_{0}=4,$ 6 and 8 ( $L_{d}$ is the separation distance between two cylinders and $T_{0}$ is the cylinder thickness) are investigated by… read more here.
Keywords: gap; turbulent flows; extreme events; flows behind ... See more keywords