Papers by Bharat Keshari swain
International Journal of Modern Physics C
In this analysis, the stability of MHD stagnation point flow and heat transfer of an electrically... more In this analysis, the stability of MHD stagnation point flow and heat transfer of an electrically conducting viscous incompressible fluid on a horizontally stretching/shrinking permeable cylinder with volumetric heat source are investigated. The cylindrical surface is subjected to a cross flow and a heat flux. This analysis finds applications in the areas of polymeric processing unit due to stretching/shrinking of surface and biofluid flows with therapeutic effects through the arteries, vein and digestive system that have a tube-like structure. Other aspects of the analysis are: magnetic field intensity whose strength can be remotely controlled and embodied generating/absorbing thermal power. The solution of the boundary value problems (BVP) is carried out with MATLAB’s inbuilt solver bvp4c. The most significant findings are recorded as: an increase in magnetic field strength increases the skin friction at the solid surface which is consistent with progressive thinning of boundary l...
AIP Conference Proceedings
Heliyon, 2020
An analysis is made to illustrate the MagnetoHydroDynamics (MHD) flow and gradient heat transport... more An analysis is made to illustrate the MagnetoHydroDynamics (MHD) flow and gradient heat transport of a Newtonian fluid over a stretching sheet embedded in a porous matrix. The governing nonlinear partial differential equations are reconstituted as ordinary differential equations utilizing suitable similarity transformation and then treated numerically using 4 th order Runge-Kutta method along with shooting technique and analytically by Homotopy Perturbation Method. The verification of present study with earlier works serves as the benchmark of reliability of the present study. The important outcomes of this study are: porous parameter (K p) acts as aiding force i.e when K p is increased from 0.1 to 10 gradually there is a significant growth in velocity and after that rate of increment gets slowdown, greater Eckert number and joule heating parameter cause a rise in temperature as well as enhance the thermal boundary thickness. Consequently rate of heat transfer diminishes as thickness leads to low heat transfer coefficient. The applications of this study are shown in: multiple heating devices and industrial processes such as incandescent light bulb's filament emitting light, food processing and polymer processing etc.
Journal of Applied Mathematics and Mechanics, Feb 23, 2023
International Journal of Modern Physics C
This paper investigates the flow and heat transfer of special third-grade fluid with a viscous di... more This paper investigates the flow and heat transfer of special third-grade fluid with a viscous dissipation effect over a stretching sheet. This model, adequate for many non-Newtonian fluids, is used to characterize the behavior of the fluids domain. The governing momentum and energy equation are reduced to ordinary nonlinear differential (self-similar) equations via the Lie group transformation method. The Homotopy Perturbation Method (HPM) is applied to solve these obtaining results. For validation, current results have been compared with the fourth-order Runga method (RK4) and shooting technique. The effects of physical parameters on fluid velocity and temperature profile were investigated with the aid of figures and tables by simply altering a single parameter while keeping the others constant. It is observed that both the non-Newtonian parameter and the Prandtl number have the effect of decreasing the temperature of the stretching surface, while the opposite behavior was found f...
Journal of Institute of Science and Technology
An attempt is made to study an unsteady, two-dimensional, laminar, mixed convective Magnetohydrod... more An attempt is made to study an unsteady, two-dimensional, laminar, mixed convective Magnetohydrodynamic (MHD) flow of an incompressible visco-elastic fluid (Waltersfluid model) past an infinite vertical plate. The reduced governing equations are solved analytically using two-term harmonic and non-harmonic functions. The effects of different pertinent parameters are discussed with the help of graphs and tables. The novelty of the present study is to account for the effects of viscous and joules dissipative heat and a linear first-order chemical reaction of diffusive species and mixed convective flow phenomena on an infinite vertical plate subjected to time-dependent suction velocity and a transverse magnetic field acting at a distance. The important findings reported herein are: increasing values of chemical reaction parameter cause low velocity and concentration, a decline in concentration profile is seen for the higher values of Schmidt number, Prandtl number contributes to more ac...
Montes Taurus Journal of Pure and Applied Mathematics, May 15, 2021
Mathematical Modelling of Engineering Problems, 2020
The current paper illustrates the consequence of viscous dissipation on the unsteady MHD flow of ... more The current paper illustrates the consequence of viscous dissipation on the unsteady MHD flow of an incompressible viscous fluid over a vertical permeable surface embedded in a porous medium. The roles of chemical reaction and thermal radiation has made the study more interesting. The Perturbation method has been applied to solve the coupled and nonlinear governing equations. It is found that the present solutions are in very good agreement with the previous solutions. The important findings are: increasing values of Eckert number (Ec) enhances the velocity of the fluid flow. The viscous dissipation convincingly increases the temperature. This analysis is of great interest in many applications such as polymer processing flows, condensation process of metallic plate in cooling bath, aerodynamic extrusion of plastic sheets etc.
The effects of chemical reaction and thermal radiation on MHD flow of an incompressible fluid pas... more The effects of chemical reaction and thermal radiation on MHD flow of an incompressible fluid past an accelerated plate with variable heat and mass transfer through porous medium in the presence of rotation have been considered. The plate temperature and concentration level are raised linearly with time. The Laplace transform method is used to solve the governing equations. The results are discussed in detail with the help of graphs and tables to observe the effects of various parameters.
T he objective of this paper is to study the effects of thermal radiation, radiation absorption a... more T he objective of this paper is to study the effects of thermal radiation, radiation absorption and chemical reaction on MHD free convective and chemically reactive boundary layer flow of a viscous incompressible rotating fluid through a porous medium past an infinite vertical porous plate in the presence of heat source. The Governing equations are solved by perturbation technique. The effects of different governing parameters on the flow field and mass transfer are shown in graphs and tables. The governing physical parameters significantly influence the flow field and mass transfer. Also, existing results in the literature are compared with the present study. Here it is found that the temperature profiles θ, being a decreasing function of F, decelerate the flow and reduce the fluid velocity. The primary velocity and temperature increase with increase of which is due to the fact that when heat is absorbed the buoyancy force which accelerates the flow. But Secondary velocity decreas...
An attempt has been made to study laminar convective heat and mass transfer flow of an incompress... more An attempt has been made to study laminar convective heat and mass transfer flow of an incompressible, viscous and electrically conducting fluid over an impulsively started vertical plate with conduction-radiation embedded in a porous medium in presence of transverse magnetic field. The influence of both second order chemical reaction and heat generation are taken into account. The governing coupled partial differential equations are solved by Crank-Nicolson method. The effects of important physical parameters on the velocity, temperature and concentration have been analyzed through graphs. The results of the present study agree well with the previous solutions. Applications of the present study are shown in material processing systems and different industries. The important findings of present study are: chemical reaction parameter acts as resistive force to reduce the velocity whereas heat source parameter enhances the velocity.
Journal of Applied Analysis & Computation
International Journal of Ambient Energy
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Papers by Bharat Keshari swain