Repercussions of uniform/non-uniform thermal gradients such as linear, parabolic, inverted piecewise linear gradient heated from below (PLHB), cooled above (PLCA) and step function (SF) in conjunction with magnetic flux on the onset Darcy-Rayleigh-Benard-Marangoni (DRBMM) convection a composite layer involving incompressible fluid holding horizontal adiabatic boundaries, rigid beneath porous fr...

Research has been carried out with a device to observe the phenomenon of Rayleigh Benard convection, made glass box bounded by lower plate and an upper plate. The bottom is hotter than top which functions heat horizontal fluid layer from below. This study aims water molecule movement. observation medium was mixed teak sawdust as representation particles average density mean=0.99 g/cm3. variatio...

INTRODUCTION In the process of drying, nonvolatile solutes (e.g., polymers, proteins, viruses, bacteria, DNA, microspheres, nanocrystals, carbon nanotubes, etc.) contained within a sessile droplet (i.e., unconstrained liquid) readily assemble into a diverse range of intriguing oneor two-dimensional structures, possessing dimensions of a few hundred submicrons and beyond. It is, in principle, a ...

We study asymptotic behavior of the global attractors to the Boussinesq system for Rayleigh-B enard convection at large Prandtl number. In particular, we show that the global attractors to the Boussinesq system for Rayleigh-B enard convection converge to that of the in nite Prandtl number model for convection as the Prandtl number approaches in nity. This o ers partial justi cation of the in ni...

The presence of an icy crust covering several satellites of the solar system (e.g. Europa, the jovian satellite) suggested us to accomplish the numerical simulation of the Rayleigh-Benard convection flow of a horizontal layer of mushy water, covered at the top by its own ice and immersed in a low gravity field. The phase transition occurring at the ice/mushy water interface, with release/absorp...

We report the numerical simulations of the horizontal convection within a rectangle cavity tank at high Rayleigh numbers. The physical solution of horizontal convection depends on the spatial resolution of the meshes. The necessary mesh number N is proportion to Ra. The unstable numerical solutions are obtained asN < cRa. This power law also implies that the spatial resolution is dominated by v...

Motivated by the roll-switching behavior observed in rotating Rayleigh-Benard convection, we define a Küppers-Lortz (K-L) state as a volume-preserving flow with periodic roll switching. For an individual roll state, the Lagrangian particle trajectories are periodic. In a system with roll-switching, the particles can exhibit three-dimensional, chaotic motion. We study a simple phenomenological m...