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1
Content available Pulsatile powell-eyring nanofluid flow in a channel with inclined magnetic field and chemical reaction
Srinivas Suripeddi, Challa Kalyan Kumar, Badeti Satyanarayana, Kumar P. Bharath
Engineering Transactions
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2023
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Vol. 71, iss. 4
519--535
EN
The current article addresses the impacts of the pulsatile flow of Powell-Eyring nanofluid using Buongiorno’s model in a horizontal channel. It also describes the combined impacts of thermophoresis and Brownian motion. Blood is an example of a Powell-Eyring fluid. The Runge-Kutta (R-K) 4th-order method, along with the shooting technique, is used to determine solutions for velocity, temperature, and concentration. The impacts of different parameters, including an inclined magnetic field, chemical reaction, Lewis number, and heat source or sink parameter, are illustrated graphically. The mass flux distribution decreases due to an increase in the values of the Powell-Eyring fluid parameter.
2
Content available Magnetoconvection of nanofluid in a partially heated cavity with isothermal blockage
Nagaraj Suresh, Nagarajan Nithyadevi
Journal of Applied Mathematics and Computational Mechanics
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2022
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Vol. 21, nr 2
77--90
EN
Natural convection characteristics of Al2O3-water nanofluid in a cavity is investigated numerically under the influence of a inclined magnetic field. The bottom wall is partially heated, and the top wall is cooled and the remaining regions of the cavity are kept adiabatic. An isothermally heated square blockage of the different rectangular size is placed at the centre of the cavity. The schematic model is converted into mathematical form, and the non-dimensional equations are discretized by the finite volume method using power law scheme and solved by Semi-Implicit Method for Pressure Linked Equation algorithm. The relevant parameters such as Rayleigh number (104-106), Hartmann numer (10-500), size of blockage ratio (0.25-0.75), length of the heat source (0.25-1.0) and inclination angle of the magnetic field (0°-90° on the flow and temperature fields are examined. Results are presented in terms of streamlines, isotherms, velocity profile, local and average Nusselt number. It was found that for low Hartmann numbers, the average heat transfer rate attained the maximum at the inclined magnetic field of γ = 45°. In addition, the blockage ratio of B = 0.75 enhanced the higher heat transfer rate for all values of γ.
3
Content available Unsteady mixed convection nonlinear radiative Casson nanofluid flow with convective boundary condition, heat source and inclined magnetic field effects
Unyong Bundit, Govindaraju Mathialagan, Gunasekaran Nallappan, Vadivel Rajarathinam
Journal of Applied Mathematics and Computational Mechanics
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2021
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Vol. 20, nr 3
65--76
EN
In this paper, we have studied the effect of heat source/sink on unsteady Casson nanofluid past a stretching surface with mixed convection inclined magnetic field and nonlinear thermal radiation numerically. Brownian and thermophoresis effects are studied in this nanofluid model (Buongiorno’s). The governing momentum, energy, and concentration equations are PDEs that are changed into ordinary differential equations by means of suitable transformations. The fourth-order R-K method with shooting technique is adapted to yield the results of this work. The velocity, thermal, and concentration profiles are discussed with the several physical parameters. Also, skin friction, the Nusselt number, and the Sherwood number are examined with the help of the table. It is found that the enhancing value of the unsteady parameter and heat sink parameters reduce the fluid temperature, and the enhancing value of the Casson parameter and heat source parameters increase the fluid temperature. The increasing value of the inclined magnetic field parameter enhances the thermal boundary layer thickness.
4
Content available Effects of the porous boundary and inclined magnetic field on MHD flow in a rectangular duct
Chutia Muhim
Journal of Applied Mathematics and Computational Mechanics
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2020
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Vol. 19, nr 4
33--44
EN
In this work, a steady two dimensional MHD flow of a viscous incompressible fluid through a rectangular duct under the action of an inclined magnetic field with a porous boundary has been investigated. The coupled partial differential equations are transformed into a system of algebraic equations using the finite difference method and are then solved simultaneously using the Gauss Seidal iteration method by programming in Matlab software. Numerical solutions for velocity, induced magnetic field and current density lines are obtained and analyzed for different values of dimensionless parameters namely suction/injection parameter (S), Hartmann number (M) and inclination angle (θ) and are presented graphically.
5
Content available Oscillatory fluid flow and heat transfer through porous medium between parallel plates with inclined magnetic field, radiative heat flux and heat source
Mehta T., Mehta R., Mehta A
International Journal of Applied Mechanics and Engineering
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2020
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Vol. 25, no. 2
88--102
EN
The aim of the paper is to investigate an oscillatory fluid flow and heat transfer through a porous medium between parallel plates in the presence of an inclined magnetic field, radiative heat flux and heat source. It is assumed that electrical conductivity of the fluid is small and the electromagnetic force produced is very small. The governing coupled equations of motion and energy are solved analytically. Numerical results for the velocity and temperature profiles, local skin friction coefficient and local Nusselt number for various values of physical parameters are discussed numerically and presented graphically.
6
Content available Elastic deformation and inclined magnetic field on entropy generation forwalter’s liquid B fluid over a stretching sheet
Ragavan C., Munirathinam S., Govindaraju M., Abdul-Hakeem A. K., Ganga B.
Journal of Applied Mathematics and Computational Mechanics
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2019
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Vol. 18, nr 2
85--98
EN
An analytical solution is presented for entropy generation on MHD Walter’s liquid B fluid over a stretching sheet with elastic deformation. The governing expressions of PDEs are converted into ODEs by suitable transformation which is solved by a hypergeometric function. Plots for velocity, heat transfer, entropy generation and a Bejan number are examined and their behavior is deliberated for several physical parameters. It is noticed that the entropy generation is minimized for an Eckert number and enhanced for an elastic deformation parameter. Moreover, these two parameters on the Bejan number profile have reverse effects.
7
Content available Effects of inclined magnetic field and Joule heating in mixed convective peristaltic transport of non-Newtonian fluids
Abbasi F. M., Hayat T., Alsaedi A.
Bulletin of the Polish Academy of Sciences. Technical Sciences
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2015
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Vol. 63, nr 2
501--514
EN
This article describes the influence of an inclined magnetic field on the mixed convective peristaltic transport of fluid in an inclined channel. Two types of non-Newtonian fluids are considered. The problem formulation is presented for the Eyring-Prandtl and Sutterby fluids. Viscous dissipation and Joule heating in the heat transfer process are retained. The presence of a heat source in the energy equation is ensured. The resulting problems are solved by the perturbation method. The plots for different parameters of interest are given and discussed. Numerical values of a heat transfer rate are given and analyzed.
8
Content available remote Effects of Hall current on unsteady hydromagnetic Couette flow in a rotating system induced by an accelerated movement of one of the plates of the channel in the presence of an inclined magnetic field
Seth G. S., Nandkeolyar R., Ansari M. S.
International Journal of Applied Mechanics and Engineering
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2011
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Vol. 16, no 3
835-849
EN
Effects of Hall current on an unsteady hydromagnetic Couette flow, induced due to an accelerated movement of the lower plate of the channel in a rotating system when the fluid flow is permeated by an inclined magnetic field is studied. An exact solution for the fluid velocity is obtained by the Laplace transform technique. The expression for the shear stress at the moving plate is also derived. An asymptotic behavior of the solution is analyzed for small and large values of time to gain some physical insight into the flow-pattern. It is found that Hall current, rotation and angle of inclination of the magnetic field tend to accelerate fluid flow in both the primary and secondary flow directions, whereas the magnetic field has a tendency to retard fluid flow in both the primary and secondary flow directions.
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