Double-diffusive convection, in which a fluid is acted upon by two fields (such as temperature and salinity) that affect the density, has been widely studied areas diverse oceans stellar atmospheres. Assuming classical Fickian diffusion for both heat salt, evolution of salinity are governed parabolic advection–diffusion equations. In reality, there small extra terms these equations render hyper...

Motivated by the ablation of vertical ice faces in salt water, we use three-dimensional direct numerical simulations to investigate heat and fluxes two-scalar convection. For parameters relevant ice-ocean interfaces convection-dominated regime, observe that salinity field drives convection is essentially transported as a passive scalar. By varying diffusivity ratio (i.e., Lewis number $Le$), id...