MHD nanofluid bioconvection due to gyrotactic microorganisms over a convectively heat stretching sheet

Effects of chemical reaction on free convective flow of a polar fluid through a porous medium in the presence of internal heat generation

Unsteady mixed convection flow on a rotating cone in a rotating fluid

This paper investigates stagnation point flow and heat transfer of a ferrofluid toward a stretching sheet in the presence of viscous dissipation. Three types of ferroparticles: magnetite (Fe 3O 4 ), cobalt ferrite (CoFe 2O 4), and Mn-Zn ferrite (Mn-ZnFe 2O 4) are considered with water and kerosene as conventional base fluids. Numerical solutions to the resulting ordinary differential equations are obtained by using an implicit finite-difference method with quasi-linearization technique. The effects of controlling parameters on the dimensionless velocity, temperature, skin friction, and Nusselt numbers are investigated. It is found that kerosene-based ferrofluids have higher skin friction and Nusselt numbers than water-based ferrofluids. The numerical results of skin friction are compared with the available data for special cases and are found to be in good agreement.

MHD Stagnation Point Ferrofluid Flow and Heat Transfer Toward a Stretching Sheet

Analysis of a gravity-induced film flow of a fluid containing both nanoparticles and gyrotactic microorganisms along a convectively heated vertical surface is presented. The Buongiorno model is applied. Two kinds of boundary conditions, the passive and the active boundary conditions, are considered to investigate this film flow phenomenon. Through a set of similarity variables, the ordinary differential equations that describe the conservation of the momentum, the thermal energy, the nanoparticles, and the microorganisms are derived and then solved numerically by an efficient finite difference technique. The effects of various physical parameters on the profiles of momentum, thermal energy, nanoparticles, microorganisms, local skin friction, local Nusselt number, local wall mass flux, and local wall motile microorganisms flux are investigated. It is expected that the passively controlled nanofluid model can be much more easily achieved and applied in real circumstances than the actively controlled model.

Mixed convection in gravity-driven nano-liquid film containing both nanoparticles and gyrotactic microorganisms

Finite-Difference Version of Quasi-Linearization Applied to Boundary-Layer Equations

The transient heat transfer near a two dimensional stagnation-point in a steady flow of a viscous and incompressible fluid is considered. The temperature of the fluid is assumed to change abruptly from a constant to another constant. Two cases are investigated by means of Liepmann's approximate method. In the first case the temperature of the wall is assumed to be a constant and in the second case the rear surface or the thin wall to be adiabatic. The time histories of the heat transfer coefficient for both case and of the temperature of the wall for the second case are obtained. Discussions on the validity of the latter are given.

Transient Heat Transfer near a Stagnation-Point

Steady, two-dimensional stagnation point flow of a highly conducting, inviscid, incompressible fluid with an aligned magnetic field is considered. An approximate solution is obtained by the use of the Karman-Pohlhausen integral method. The solution is compared with the exact ones.

An Application of Approximate Integral Method to Stagnation Point Flow with Inviscid Magnetic Boundary Layer

The inviscid boundary layer in a two-dimensional aligned-fields flow of highly conducting, inviscid, incompressible fluid is considered If a transformation analogous to one in conventional viscous boundary layer problem is applied, a general solution of the magnetic boundary layer in the case of very weak magnetic filed is obtained A similar solution for the stagnation point flow is obtained by the method of series expansion in pressure number The solution for the same flow is also obtained by integrating directly the original equation without any expansion Both solution are compared with each other The discussions on the thickness of the boundary layer and nonexistence of the solution for the case of the case of the pressure number greater than unity are given

Kenji Inouye

Papers

Finite-Difference Version of Quasi-Linearization Applied to Boundary-Layer Equations

Transient Heat Transfer near a Stagnation-Point

An Application of Approximate Integral Method to Stagnation Point Flow with Inviscid Magnetic Boundary Layer

Some Investigations on Inviscid Boundary Layer of Magnetohydrodynamics

Connection between lift and particle displacement