Author
Kenji Inouye
Bio: Kenji Inouye is an academic researcher from National Aerospace Laboratory. The author has contributed to research in topics: Boundary layer & Potential flow around a circular cylinder. The author has an hindex of 3, co-authored 5 publications receiving 146 citations.
Papers
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153 citations
TL;DR: In this article, the transient heat transfer near a two dimensional stagnation point in a steady flow of a viscous and incompressible fluid is considered, where the temperature of the fluid is assumed to change abruptly from a constant to another constant.
Abstract: 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.
10 citations
TL;DR: In this article, a stable, two-dimensional stagnation point flow of a highly conducting, inviscid, incompressible fluid with an aligned magnetic field is considered and an approximate solution is obtained by the use of the Karman-Pohlhausen integral method.
Abstract: 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.
3 citations
Abstract: 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
2 citations
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TL;DR: In this article, the effects of the governing parameters on the dimensionless quantities like velocity, temperature, nanoparticle concentration, density of motile microorganisms, local Nusselt, and local Sherwood numbers for both nanoparticles and motile microscopic density are explored.
174 citations
TL;DR: In this article, the authors focused on the combined effects of free convective heat and mass transfer on the steady two-dimensional, laminar,polar fluid flow through a porous medium in the presence of internal heat generation and chemical reaction.
167 citations
TL;DR: It has been shown that a self-similar solution is possible when the free stream angular velocity and the angular velocity of the cone vary inversely as a linear functions of time.
80 citations
TL;DR: In this paper, the stagnation point flow and heat transfer of a ferrofluid toward a stretching sheet in the presence of viscous dissipation were investigated with three types of ferroparticles: magnetite, cobalt and Mn-Zn.
Abstract: 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.
54 citations
TL;DR: In this article, an analysis of a gravity-induced film flow of a fluid containing both nanoparticles and gyrotactic microorganisms along a convectively heated vertical surface is presented.
Abstract: 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.
53 citations