Clustering and turbulence modulation in particle-laden shear flows [PDF]
Journal of Fluid Mechanics, 2011 AbstractTurbulent fluctuations induce the common phenomenon known as clustering in the spatial arrangement of small inertial particles transported by the fluid. Particles spread non-uniformly, and form clusters where their local concentration is much higher than in nearby rarefaction regions. The underlying physics has been exhaustively analysed in the
GUALTIERI, Paolo +3 more
openaire +7 more sources
Nonlinear transverse cascade and two-dimensional magnetohydrodynamic subcritical turbulence in plane shear flows [PDF]
Physical review. E, Statistical, nonlinear, and soft matter physics, 2014 We find and investigate via numerical simulations self-sustained two-dimensional turbulence in a magnetohydrodynamic flow with a maximally simple configuration: plane, noninflectional (with a constant shear of velocity) and threaded by a parallel uniform
Chagelishvili, G. D. +3 more
core +4 more sources
The lift-up effect: the linear mechanism behind transition and turbulence in shear flows [PDF]
, 2014 The formation and amplification of streamwise velocity perturbations induced by cross-stream disturbances is ubiquitous in shear flows. This disturbance growth mechanism, so neatly identified by Ellingsen and Palm in 1975, is a key process in transition ...
Brandt, Luca
core +2 more sources
Modeling the transition to turbulence in shear flows [PDF]
, 2011 One-dimensional models are presented for transitional shear flows. The models have two variables corresponding to turbulence intensity and mean shear.
Dwight Barkley, Vollmer
core +2 more sources
Turbulence in forced stratified shear flows
Journal of Fluid Mechanics, 2020 Continuously forced, stratified shear flows occur in many geophysical systems, including flow over sills, through fjords and at the mouths of rivers and estuaries.
Katherine M. Smith +2 more
semanticscholar +1 more source
Metastability of Kolmogorov Flows and Inviscid Damping of Shear Flows [PDF]
Archive for Rational Mechanics and Analysis, 2017 First, we consider Kolmogorov flow (a shear flow with a sinusoidal velocity profile) for 2D Navier–Stokes equation on a torus. Such flows, also called bar states, have been numerically observed as one type of metastable state in the study of 2D ...
Zhiwu Lin, Mingxi Xu
semanticscholar +1 more source
Direct numerical simulation of statistically stationary and homogeneous shear turbulence and its relation to other shear flows [PDF]
, 2016 Statistically stationary and homogeneous shear turbulence (SS-HST) is investigated by means of a new direct numerical simulation code, spectral in the two horizontal directions and compact-finite-differences in the direction of the shear. No remeshing is
A. Sekimoto, Siwei Dong, J. Jim'enez
semanticscholar +1 more source
Dynamic Mode Decomposition for Large-Scale Coherent Structure Extraction in Shear Flows
IEEE Transactions on Visualization and Computer Graphics, 2021 Large-scale structures have been observed in many shear flows which are the fluid generated between two surfaces moving with different velocity. A better understanding of the physics of the structures (especially large-scale structures) in shear flows ...
Duong B. Nguyen +3 more
semanticscholar +1 more source
Turbulence and Shear Flow Phenomena-5 Symposium [PDF]
Journal of Turbulence, 2009 The International Biennial Symposia on Turbulence and Shear Flow Phenomena (TSFP) is aimed at promoting research and communication of important results in turbulence research and various associated...
T. Miyauchi, N. Adams
openaire +1 more source
Condensation of microturbulence-generated shear flows into global modes [PDF]
, 2000 In full flux-surface computer studies of tokamak edge turbulence, a spectrum of shear flows is found to control the turbulence level and not just the conventional (0,0)-mode flows.
A. B. Hassam +17 more
core +2 more sources