53 citations · 188 across the 10 of their papers we have counts for
8 papers · 1 filter
Multi-modal excitation to model the Quasi-Biennial Oscillation
Pierre Léard, Daniel Lecoanet, Michael Le Bars
The Quasi-Biennial Oscillation (QBO) of stratospheric winds is the most striking example of mean-flow generation and reversal by the non-linear interactions of internal waves. Prev…
Shape and size of large-scale vortices: A generic fluid pattern in geophysical fluid dynamics
Louis-Alexandre Couston, Daniel Lecoanet, Benjamin Favier +1
Planetary rotation organizes fluid motions into coherent, long-lived swirls, known as large-scale vortices (LSVs), which play an important role in the dynamics and long-term evolut…
Buoyancy-Driven Entrainment in Dry Thermals
Brett McKim, Nadir Jeevanjee, Daniel Lecoanet
\citet{turner1957} proposed that dry thermals entrain because of buoyancy (via a constraint which requires an increase in the radius ). This however, runs counter to the scaling…
The energy flux spectrum of internal waves generated by turbulent convection
Louis-Alexandre Couston, Daniel Lecoanet, Benjamin Favier +1
We present three-dimensional direct numerical simulations of internal waves excited by turbulent convection in a self-consistent, Boussinesq and Cartesian model of convective--stab…
Order Out of Chaos: Slowly Reversing Mean Flows Emerge from Turbulently Generated Internal Waves
Louis-Alexandre Couston, Daniel Lecoanet, Benjamin Favier +1
We demonstrate via direct numerical simulations that a periodic, oscillating mean flow spontaneously develops from turbulently generated internal waves. We consider a minimal physi…
Entrainment in Resolved, Dry Thermals
Daniel Lecoanet, Nadir Jeevanjee
Entrainment in cumulus convection remains ill-understood and difficult to quantify. For instance, entrainment is widely believed to be a fundamentally turbulent process, even thoug…