Mixing efficiency in the ocean

MC Gregg, EA D'Asaro, JJ Riley… - Annual review of marine …, 2018 - annualreviews.org
Mixing efficiency is the ratio of the net change in potential energy to the energy expended in
producing the mixing. Parameterizations of efficiency and of related mixing coefficients are …

Ocean mixing by Kelvin-Helmholtz instability

WD Smyth, JN Moum - Oceanography, 2012 - JSTOR
ABSTRACT Kelvin-Helmholtz (KH) instability, characterized by the distinctive finite-
amplitude billows it generates, is an important mechanism in the development of turbulence …

Goldilocks mixing in oceanic shear-induced turbulent overturns

A Mashayek, CP Caulfield, MH Alford - Journal of Fluid Mechanics, 2021 - cambridge.org
We present a new, simple and physically motivated parameterization, based on the ratio of
Thorpe and Ozmidov scales, for the irreversible turbulent flux coefficient. Importantly …

The butterfly effect and the transition to turbulence in a stratified shear layer

CL Liu, AK Kaminski, WD Smyth - Journal of Fluid Mechanics, 2022 - cambridge.org
In a stably stratified shear layer, multiple competing instabilities produce sensitivity to small
changes in initial conditions, popularly called the butterfly effect (as a flapping wing may …

The effects of boundary proximity on Kelvin–Helmholtz instability and turbulence

CL Liu, AK Kaminski, WD Smyth - Journal of Fluid Mechanics, 2023 - cambridge.org
Studies of Kelvin–Helmholtz (KH) instability have typically modelled the initial flow as an
isolated shear layer. In geophysical cases, however, the instability often occurs near …

Shear-induced mixing in geophysical flows: does the route to turbulence matter to its efficiency?

A Mashayek, WR Peltier - Journal of Fluid Mechanics, 2013 - cambridge.org
Motivated by the importance of diapycnal mixing parameterizations in large-scale ocean
general circulation models, we provide a detailed analysis of high-Reynolds-number mixing …

Underlying physics of mixing efficiency for shear-forced, stratified turbulence

YR Yi, JR Koseff - Physical Review Fluids, 2023 - APS
We study three types of homogeneous, shear-forced, stably stratified turbulence in a triply
periodic domain over a wide range of stratification strengths. The shear forcings correspond …

Revised mixing coefficient scaling for sheared stably stratified turbulence

RY Young, JR Koseff - Journal of Fluid Mechanics, 2022 - cambridge.org
We revisit and extend the turbulent Froude number (. We emphasize that our revised scaling
is applicable only for stably stratified, vertically sheared turbulence with weak spatio …

[图书][B] Ocean mixing

MC Gregg - 2021 - books.google.com
The stratified ocean mixes episodically in small patches where energy is dissipated and
density smoothed over scales of centimeters. The net effect of these countless events effects …

Diapycnal diffusivities in Kelvin–Helmholtz engendered turbulent mixing: the diffusive–convection regime in the Arctic Ocean

Y Ma, WR Peltier - Journal of Fluid Mechanics, 2022 - cambridge.org
Recent progress in the direct measurement of turbulent dissipation in the Arctic Ocean has
highlighted the need for an improved parametrization of the turbulent diapycnal diffusivities …