Enhanced solar evaporation of water from porous media, through capillary mediated forces and surface treatment

Capillary forces in the acoustics of patchy-saturated porous media.

A linearized theory of the acoustics of porous elastic formations, such as rocks, saturated with two different viscous fluids is generalized to take into account a pressure discontinuity across the fluid boundaries. The latter can arise due to the surface tension of the membrane separating the fluids. We show that the frequency-dependent bulk modulus K(omega) for wavelengths longer than the cha...

Enhanced evaporation from an oscillating liquid in a capillary tube

the study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media

امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...

experimental study of capillary effects on the dynamics of surface evaporation of water droplets

the evaporation of liquid droplets is of fundamental importance in a large number of practical situations ranging from technological applications such as ink-jet printing, spray cooling and various coating processes, to a variety of biological and geophysical contexts. in this study, the behavior of the surfaces of glass, plexiglas, aluminum and copper in the evaporation of water droplets is st...

The effect of capillary forces on immiscible two-phase flow in heterogeneous porous media

A selection of these reports is available in PostScript form at the Faculty's anonymous ftp-Abstract We consider the one-dimensional two-phase ow including capillary eeects through a heterogeneous porous medium. The heterogeneity is due to the spatial variation of the absolute permeability and the poros-ity. Both these quantities are assumed to be piecewise constant. At interfaces where the roc...