The unsteady component of axial flow of an incompressible fluid in the region lying between the annular spaces of two coaxial cylinders has been investigated. The outer cylinder is assumed to possess uniform permeability ...

A fully developed, axisymmetric, pulsatile motion of an incompressible Newtonian fluid,under the action of an oscillatory pressure gradient, has been considered in this work. The fl ow is assumed to take place in the ...

The two-field model (2-F) for natural convection in porous media is studied in relation to the one-field model (1-F), which is the result of the local thermal equilibrium assumption. These models are used to evaluate heat ...

The fluid-front dynamics resulting from the coexisting infiltration and evaporation phenomena in nanofluidic systems has been investigated. More precisely, water infiltration in both titania and silica mesoporous films was ...

Context. HR 4796A is surrounded by a well-structured and very bright circumstellar disc shaped like an annulus with many interesting features: very sharp inner and outer edges, brightness asymmetries, centre offset, and ...

The evaporation of water droplets on surfaces is an ubiquitous phenomenon in nature and has critical importance in a broad range of technical applications. Here we show a substantial enhancement of liquid evaporation rate ...