The heat and mass transfer characteristics of natural convection about a horizontal surface embedded in a saturated porous medium subject to variable viscosity are numerically analyzed, by taking into account the diffusion-thermo (Dufour) and thermal-diffusion (Soret) effects. The governing equations of continuity, momentum, energy and concentration are transformed into nonlinear ordinary diffe...

The motion of the viscous, incompressible fluid through a porous medium with heat and mass transfer over a shrinking sheet is investigated. The cross-diffusion effect between temperature and concentration is considered. This phenomenon is modulated mathematically by a set of partial differential equations which govern the continuity, momentum, heat, and mass. These equations are transformed to ...

4-D comparison method to study the NOy partitioning in summer polar stratosphere – Influence of aerosol burden G. Dufour, S. Payan, F. Lefèvre, M. Eremenko, A. Butz, P. Jeseck, Y. Té, K. Pfeilsticker, and C. Camy-Peyret Laboratoire de Physique Moléculaire et Applications, Université P. et M. Curie, Paris, France Service d’Aéronomie, Institut Pierre-Simon Laplace, Paris, France Institut für Umwe...

Explicit Finite-Difference method was used to obtain the solution of the system of the non-linear ordinary differential equations which obtained from the non-linear partial differential equations. These equations describe the twodimensional flow of a MHD third-order Nano-fluid with heat and mass transfer in a circular cylindrical tube having two walls that are transversely displaced by an infin...

This study examines the numerical solutions of an unsteady natural convection Couette flow a viscous, incompressible and electrically conducting fluid between two vertical parallel plates in presence thermal radiation, Soret Dufour. The fundamental dimensionless governing partial differential equations for impulsive movement plate are solved by method lines (MOL). simulations effects Dufour on ...

Effects of some thermo-physical parameters on free convective heat and mass transfer over a vertical stretching surface at lowest level of heat energy in the presence of suction is investigated. The viscosity of the fluid is assumed to vary as a linear function of temperature and thermal conductivity is assumed constant. A similarity transformation is applied to reduce the governing equations i...

The current study used a novel Casson model to investigate hybrid Al2O3-Cu/Ethylene glycol nanofluid flow over moving thin needle under MHD, Dufour–Soret effects, and thermal radiation. By utilizing the appropriate transformations, governing partial differential equations are transformed into ordinary equations. solved analytically using HAM. Furthermore, we discuss velocity profiles, temperatu...

Abstract— Explicit Finite-Difference method was used to obtain the solution of the system of the non-linear ordinary differential equations which transform from the non-linear partial differential equations. These equations describe the steady magneto-hydrodynamic flow of an oldroyd 6-constant non-Newtonian nano-fluid through a non-Darcy porous medium with heat and mass transfer. The numerical ...