Double-diffusive natural convection in an open top square cavity and heated from the side is studied numerically. Constant temperatures and concentration are imposed along the right and left walls while the heat balance at the surface is assumed to obey Newton’s law of cooling. The finite difference method is used to solve the dimensionless governing equations. The numerical results are reporte...

Three copper cylinders of diameter 1/4”, 3/8” and1/2” were heated and then immersed in an air stream flowing through a cylindrical pipe. The temperature change of the cylinders with respect to time was measured at different air flow rates. With this data, the Nusselt, Reynolds and Prandtl numbers were calculated and correlated. This correlation was compared to ones established by Sherwood-Pigfo...

In this paper, the bioconvective flow in a porous square cavity containing oxytactic microorganism in the presence of chemical reaction is investigated. The bioconvection flow and heat transfer in porous media are formulated based on the Darcy model of Boussinesq approximation. The governing partial differential equations are solved using the Galerkin finite element method. The computational nu...

Heat or mass transfer from spherical particles in oscillatory flow has important applications in combustion and spray drying. This work provides a parametric investigation of drag forces experienced by, and transport of a passive scalar from, an isolated rigid fixed sphere in steady and oscillatory axisymmetric flows. At Schmidt ~Prandtl! number of 1, oscillatory flows with Reynolds numbers in ...

The present paper was aimed to study the effects of variable thermal conductivity and heat generation on the flow of a viscous incompressible electrically conducting fluid in the presence of a uniform transverse magnetic field, thermal radiation, porous medium, mass transfer, and variable free stream near a stagnation point on a non-conducting stretching sheet. Equations of continuity, momentum...

In this paper yield of nimbin extraction from neem seeds using supercritical carbon dioxide with methanol as co-solvent has been studied. In this case mass transfer coefficient in terms of Sherwood number has been estimated by a neuro-fuzzy network. Then the estimated mass transfer coefficient has been fed to the system model which is set of partial differential equations. The proposed gray box...

The paper addresses the effects of Soret on unsteady free convection flow of a viscous incompressible fluid through a porous medium with high porosity bounded by a vertical infinite moving plate under the influence of thermal radiation, chemical reaction, and heat source. The fluid is considered to be gray, absorbing, and emitting but non-scattering medium, and Rosseland approximation is consid...