A numerical investigation has been carried out for mixed convection flow in a rectangularventilated cavity with a heat conducting solid circular cylinder at the center. Forced convection flowconditions were imposed by providing an inlet at the bottom of the left wall and an outlet vent at the topto the other sidewall. In this paper, the effect of cavity aspect ratio as well as the mixed convect...

this paper a novel homotopy perturbation method has been presented for forced convection boundary layer problems in a porous medium. Noting the infinite condition, a homotopy form which is similar to the singular perturbation form has been considered. The inner and outer solutions have been achieved and the coincidence of the results has been investigated with a proper matching method. The resu...

Under nonlocal convection theory, convection extends without limit therefore no apparent boundary can be defined clearly as in the local theory. From the requirement of a similar structure for both local and non-local models having the same depth of con-vection zone, and taking into account the driving mechanism of turbulent convection, we argue that a proper definition of the boundary of a con...

Convection of an internally heated fluid, confined between top and bottom plates of equal temperature, is studied by direct numerical simulation in two and three dimensions. The unstably stratified upper region drives convection that penetrates into the stably stratified lower region. The fraction of produced heat escaping across the bottom plate, which is one half without convection, initially...

The integration of a flow-through cell into Mach–Zehnder interferometer offers the possibility to study dissolution crystals in detail. influence flow on displacement velocity specific crystal facet and distribution solute concentration around are measured simultaneously time-resolved manner. disintegration from surface mass transfer solvent can be separated. We aim establish an vitro experimen...

Numerical modeling of the flow structure and heat transfer in a gas-droplet turbulent duct with forward-facing step is carried out. The two-dimensional RANS equations are used numerical solution. Eulerian two-fluid approach for describing dynamics gaseous dispersed phases. turbulence carrier phase described using an elliptical Reynolds stress model taking presence phase. It shown that finely-di...

A major problem confronting the understanding of tidal evolution of close solar-type binaries is the inefficiency of the turbulent convection. The value of the effective viscosity estimated, in the framework of the mixing length theory (MLT), implies circularization timescales which are almost two orders of magnitude longer than observed. Moreover, the reduction of the effective viscosity due t...