Numerical study of double-diffusive natural convective heat transfer in a curved cavity filledwith a porous medium has been carried out in the current study. Polar system has beenselected as coordinate system. As a result, all equations have been discredited in r and θdirections. Brinkmann extended Darcy model has been utilized to express fluid flow inporous matrix in the enclosure. Smaller and...

Beneath its ice cover the Arctic Ocean is a low energy environment. The weak turbulent activity allows other, more esoteric mixing mechanisms to become important in transforming the water masses. One such process is double-diffusive convection, which is triggered by the different molecular diffusion rates of heat and salt and utilises the potential energy stored in the unstably stratified compo...

This paper deals with a mathematical and numerical investigation of double-diffusive natural convective heat mass transfer in cavity filled Newtonian fluid significant density diffusivity changes. In such situation, the assumption Boussinesq approximation is not justified, an appropriate model based on set Low Mach Number equations used. The active parts two vertical walls are maintained at fix...

Two - component / Double Diffusive Marangoni (DDM) convection with Dufour effects, in a two-layered system, has been studied analytically by using Darcy – Brinkmann Model. For fluid layer, the upper boundary is free surface tension depending on both temperature and concentration, for porous layer lower rigid boundaries are insulating to heat mass. At interface, normal velocity, stress, shear ma...

The study of convective motions produced by unstable density distributions in a fluid is now highly developed. Most attention has been given to the case of a thin horizontal layer of fluid, heated below and cooled above, and results obtained using a combination of Boussinesq theory and laboratory experiments have been success­ fully applied in many contexts (Chandrasekhar 1961, Spiegel 1971). T...