shear flows
Reduced description of exact coherent states in parallel shear flows
... other shear flows, has required substantial computational ...base shear flow, standard methods based on linear theory cannot be used to identify them, and more sophisticated algorithms (or ...
18
Turbulent laminar patterns in shear flows without walls
... wall-bounded shear flows. Here we study the idealised shear between stress-free boundaries driven by a sinusoidal body force and demonstrate quantitative agreement between turbulence in this flow and ...
14
Analysis of non-spherical particle transport in complex internal shear flows
... A computational model was developed for ellipsoidal particle transport and deposition, con- sidering the impact of anisotropic shape effects on non-spherical particle dynamics in shear flows. Transport ...
27
Stratified Kelvin–Helmholtz turbulence of compressible shear flows
... Abstract. We study scaling laws of stratified shear flows by performing high-resolution numerical simulations of invis- cid compressible turbulence induced by Kelvin–Helmholtz instability. An implicit large ...
20
Evolution of forced shear flows in polytropic atmospheres: A comparison of forcing methods and energetics
... driving shear flows in different objects are not known in detail, the relaxation method provides a tool to adjust the force such that a more suitable flow can be ...or shear regions in more massive ...
15
Mean flow evolution of saturated forced shear flows in polytropic atmospheres
... astrophysical shear regions in detail, ana- lytical and numerical techniques have to be used to investigate the motions present in such ...of shear flows that lead to turbulence exploit an unforced ...
6
Resonant alignment of microswimmer trajectories in oscillatory shear flows
... turbulent flows cells accumulate in transiently downwelling [7–9] or strongly accelerated [10] ...Horizontal shear flows can trap gyrotactic swimmers (a mechanism for oceanic thin layers) [3] and ...
5
Effect of enhanced dissipation by shear flows on transient relaxation and probability density function in two dimensions
... (63) drops more rapidly for large x. Interestingly, this is sim- ilar to the narrowing of Gaussian PDFs by shear flows shown in Sec. IV. Finally, going back to our discussion on the PDF method in Sec. II, ...
14
Time-Dependent Probability Density Functions and Attractor Structure in Self-Organised Shear Flows
... self-organised shear flows, where the formation of shear flows is induced by a finite memory time of a stochastic forcing, manifested by the emergence of a bimodal PDF with the two peaks ...
18
Time-Dependent Probability Density Functions and Attractor Structure in Self-Organised Shear Flows
... large-scale shear flows (such as zonal flows and streamers in laboratory plasmas, in the atmosphere and oceans, and in giant planets) and differential rotations in the Sun and other stars emerge from ...
19
Shear banding instability of arbitrarily inelastic granular shear flows
... granular flows, the shearbanding in granular flows—in particular—has received tremendous attention mainly due to its analogy with the shearbanding in soft matters, ...granular shear flow, one of the ...
21
A Note on The Stability of Generalized Hydromagnetic Thermal Shear Flows in the Presence of Horizontal Magnetic Fied
... Abstract— The paper presents a mathematical analysis of the stability of generalized hydromagnetic thermal shear flows in the Presence of horizontal magnetic field. The physical configuration is that of a ...
7
Dynamic settling of particles in shear flows of shear-thinning fluids
... the shear rate of the background ...background shear rate of the suspending fluid varies, an effect which does not occur in Newtonian ...of shear-thinning ...particles. Flows with a velocity ...
30
Particle fluid mechanics in shear flows, acoustic waves, and shock waves
... speed of sound at some reference state c specific heat of the part icle cloud c, specific he at of the p article cloud with radius specific heat of the particle cloud with radius specifi[r] ...
197
Discrete element modelling of material non coaxiality in simple shear flows
... cient shear stress near frictional boundaries ...simple shear simulations, there appears no report of any successful realisation of uniform distribution of force ...large shear rates is another ...
21
Stability of Double Tearing Mode in the Presence of Shear Flows
... into two eigen states with the same growth rate but opposed propagating direction. These two eigen modes show single tearing mode structure due to one of two islands is prevented by the Alfv´en resonance (AR). However, ...
5
Nested separatrices in simple shear flows: the effect of localized disturbances on stagnation lines
... of the saddle points at this scale, it is possible to see a closed eddy surrounding the first elliptic stagnation point in the chain — particularly for the larger cylinder, which obviously creates a more severe ...
34
Exact coherent structures in an asymptotically reduced description of parallel shear flows
... In future work we will report on the stability properties of these states, including slow streamwise variation, and on their relation to the ECS of the full 3D problem. In addition, new ECS can be identi fi ed in the ...
12
Estimation of the Shear-Induced Lift Force on a Single Bubble in Laminar and Turbulent Shear Flows Using Interface Tracking Approach
... complexity flows (low shear, low relative velocity, laminar flows) the “whole domain” method proved to be more robust and allowed for quick control ...the shear rates and relative velocities ...
151
Resonant alignment of microswimmer trajectories in oscillatory shear flows
... Horizontal shear flows can trap gyrotactic swimmers (a mechanism for oceanic thin layers) [3] and modify hydrodynamic instabilites and patterns (bioconvection) [11, ...and shear flow can combine to drive cell ...
6