Subtropical catastrophe: Significant loss of low‐mode tidal energy at 28.9°

JA MacKinnon, KB Winters - Geophysical Research Letters, 2005 - Wiley Online Library
An idealized numerical study of a northward propagating internal tide reveals a dramatic
loss of energy to small‐scale subharmonic instabilities near 28.9° N. Inspired by …

Similarity scaling and vorticity structure in high-Reynolds-number stably stratified turbulent wakes

PJ Diamessis, GR Spedding… - Journal of Fluid …, 2011 - cambridge.org
The mean velocity profile scaling and the vorticity structure of a stably stratified, initially
turbulent wake of a towed sphere are studied numerically using a high-accuracy spectral …

Near-inertial energy propagation inside a Mediterranean anticyclonic eddy

MP Lelong, Y Cuypers… - Journal of Physical …, 2020 - journals.ametsoc.org
Motivated by observations of a strong near-inertial wave signal at the base of the
semipermanent anticyclonic Cyprus Eddy during the 2010 Biogeochemistry from the …

Simulation of the Navier–Stokes equations in three dimensions with a spectral collocation method

CJ Subich, KG Lamb, M Stastna - International Journal for …, 2013 - Wiley Online Library
This paper describes a nonlinear, three‐dimensional spectral collocation method for the
simulation of the incompressible Navier–Stokes equations under the Boussinesq …

Langmuir turbulence in shallow water. Part 2. Large-eddy simulation

AE Tejada-Martinez, CE Grosch - Journal of Fluid Mechanics, 2007 - cambridge.org
Results of large-eddy simulation (LES) of Langmuir circulations (LC) in a wind-driven shear
current in shallow water are reported. The LC are generated via the well-known Craik …

Numerical investigation of solitary internal wave-induced global instability in shallow water benthic boundary layers

PJ Diamessis, LG Redekopp - Journal of physical …, 2006 - journals.ametsoc.org
The time-dependent boundary layer induced by a weakly nonlinear solitary internal wave in
shallow water is examined through direct numerical simulation. Waves of depression and …

A spectral multidomain penalty method model for the simulation of high Reynolds number localized incompressible stratified turbulence

PJ Diamessis, JA Domaradzki, JS Hesthaven - Journal of Computational …, 2005 - Elsevier
A spectral multidomain penalty method model has been developed for the simulation of high
Reynolds number localized stratified turbulence. This is the first time that a penalty method …

A three-component model for the coupled evolution of near-inertial waves, quasi-geostrophic flow and the near-inertial second harmonic

GL Wagner, WR Young - Journal of Fluid Mechanics, 2016 - cambridge.org
We derive an asymptotic model that describes the nonlinear coupled evolution of (i) near-
inertial waves (NIWs),(ii) balanced quasi-geostrophic flow and (iii) near-inertial second …

Identifying unstable modes in stratified shear layers

JR Carpenter, NJ Balmforth, GA Lawrence - Physics of Fluids, 2010 - pubs.aip.org
One interpretation of the mechanism of instability in stratified shear flows is based on the
idea that two independently propagating waves may interact to cause mutual growth in one …

Differential diffusion in breaking Kelvin–Helmholtz billows

WD Smyth, JD Nash, JN Moum - Journal of Physical …, 2005 - journals.ametsoc.org
Direct numerical simulations are used to compare turbulent diffusivities of heat and salt
during the growth and collapse of Kelvin–Helmholtz billows. The ratio of diffusivities is …