Double-diffusive convection is a mixing process driven by the interaction of two fluid
components which diffuse at different rates. Leading expert Timour Radko presents the first …

Double-diffusive instabilities are often invoked to explain enhanced transport in stably
stratified fluids. The most-studied natural manifestation of this process, fingering convection …

A theoretical model for the equilibrium double-diffusive transport is presented which
emphasizes the role of secondary instabilities of salt fingers in saturation of their linear …

Multiple alternating zonal jets observed in the ocean are studied with an idealized
quasigeostrophic model of flow in a zonal channel. The jets are maintained by the eddies …

Through an expansive series of simulations, we investigate the effects of spatially uniform
shear on the transport, structure, and dynamics of salt fingers. The simulations reveal that …

Salt-finger convection provides a key mixing process in geophysical and astrophysical fluid
flows. Because of its small characteristic spatial scale and slow diffusive time scale, this …

Mixing due to sheared salt fingers is studied by means of direct numerical simulations (DNS)
of a double-diffusively unstable shear layer. The focus is on the “moderate shear” case …

We describe three‐dimensional direct numerical simulations (DNS) of double‐diffusively
stratified flow interacting with inflectional shear. The extreme difference in diffusivity (and …

The real part of the dispersion relation σ r (k, l) for three illustrative cases:(a) pure salt
fingering: Re= 0, Gr= 10 6, R ρ= 1.6;(b) pure KH: Re= 300, Ri b= 0.1, R ρ= 100; and (c) KH …

We use being the thermal and chemical Rayleigh numbers. When the Reynolds number
exceeds a few tens, we report on a secondary instability which takes the form of large-scale …