UDSspace

This paper investigates the effect of inclination on the heat and mass transfer characteristics of a heated plate with viscous dissipation. An incompressible ferrofluid such as polyethylene oxide solution is made to uniformly flow over a heated plate and a transverse magnetic field applied to regulate the flow. The partial differential equations modeling the problem include the equation of mass conservation, the momentum equation, the energy equation and the concentration equation. The system...

Unsteady hydromagnetic convective heat and mass transfer flow past an impulsively started infinite vertical surface with Newtonian heating m a porous medium has been studied. The governing differential equations were transformed using suitable dimensionless parameters. The dimensionless equations were solved employing the Laplace transform techniques and results illustrated graphically for the velocity, temperature and concentration profiles. The study concluded that all the controlling param...

This paper presents an investigation of the hydromagnetic flow over a flat surface with convective boundary conditions and internal heat generation in the presence of chemical reaction. The Newton-Raphson shooting method along with the fourth-order Runge-Kutta integration algorithm has been employed to tackle the third order, nonlinear boundary layer equation governing the problem. Results have been graphically displayed and discussed quantitatively to show some interesting aspects of the co...

This study investigated the effects of an nth order chemical reaction and viscous dissipation on the heat and mass transfer over a vertical surface with convective boundary conditions. A similarity analysis was used to transform the system of partial differential equations describing the problem into ordinary differential equations. The reduced system was solved using the Newton Raphson shooting method alongside the Forth-order Runge - Kutta algorithm. The results are presented graphica...

A mathematical model is presented for a two-dimensional, steady, viscous, incompressible, electrically conducting and laminar free convection boundary layer flow with radiation from a flat plate in a chemically reactive medium in the presence of a transverse magnetic field. The basic equations governing the flow are in the form of partial differential equations and have been reduced to a set of non-linear ordinary differential equations by applying suitable similarity transformations. The...

In this paper, a nonlinear mathematical model is proposed to study the dynamics of disease transmission between human beings and animals. The disease free equilibrium is established and it is locally asymptotically stable if the basic reproduction number R0 < 1 . To determine how a marginal change in any one of the parameters in R0 would impact on the prevalence of the infection, a sensitivity analysis is carried out by using the Forward Normalized Sensitivity Index. We then modify the basic...

This paper investigates the effect of thermal radiation on magneto hydrodynamic (MHD) flow over a vertical plate with convective boundary conditions. The governing partial differential equations were transformed into coupled nonlinear differential equations which were solved numerically using the fourth order Runge-Kutta algorithm with a shooting method. Numerical results for the skin friction coefficient, the rate of heat transfer represented by the local Nusselt number and the plate surface...

This paper presents an investigation of the hydromagnetic stagnation flow of an incompressible viscous, electrically conducting fluid, towards a stretching sheet in the presence of axially in- creasing free stream velocity. The Newton-Raphson shooting method along with the fourth-order Runge-Kutta integration algorithm has been employed to tackle the third order, nonlinear boundary layer equation governing the problem. The results indicate that suction and thermal Grashof number have the ...

The Soil and Water Assessment Tool (SWAT) is a versatile model presently used worldwide to evaluate water quality and hydrological concerns under varying land use and environmental conditions. In this study, SWAT was used to simulate streamflow and to estimate sediment yield and nutrients loss from the Murchison Bay catchment as a result of land use changes. The SWAT model was calibrated and validated for streamflow for extended periods. The Sequential Uncertainty Fitting (SUFI-2) global sens...

A mathematical model is presented for a two-dimensional, steady, incompressible electrically conducting, laminar free convection boundary layer flow of a continuously moving vertical porous plate in a chemically reactive medium in the presence of a transverse magnetic field. The basic equations governing the flow are in the form of partial differential equations and have been reduced to a set of non-linear ordinary differential equations by applying suitable similarity transformations. Th...

A numerical approach has been adopted to investigate the steady chemically mixed convection boundary layer flow from the right face of a vertical plate of finite thickness. Cold fluid flowing over the right face of the plate contains a heat generation that decays exponentially with a dimensionless distance from the surface. The left face of the plate is in contact with a hot flowing fluid. The heating process on that side is characterized by a convective boundary condition that takes int...

A theoretical study has been conducted to investigate the steady Magnetohydrodynamics (MHD) boundary layer flow past a low-heat-resistant sheet moving vertically downwards. The fluid is considered viscous, incompressible and electrically conducting. The non-linear coupled differential equations are solved numerically by applying Runge-Kutta integration scheme coupled with Newton- Raphson shooting technique. The results show that the velocity, temperature, and concentration profiles are a...

The purpose of this paper was to utilize data envelopment analysis (DEA) to measure academic efficiency of the four campuses of the University for Development Studies (UDS) Ghana. DEA has been recognized as a robust tool that is used for evaluating the performance of profit and non-profit institutions. The proposed approach was deployed based on empirical data collected from the four campuses. On an efficiency scale of 0–1.0, DEA analysis assesses the relative efficiency of every campus relat...

A steady free convective laminar boundary layer flow arising from a linearly stretching of a porous flat surface in a nanofluid with convective boundary conditions has been investigated. The model used for the nanofluid incorporates the effects of Brownian motion and thermophoresis. The resulting non-linear governing equations with associated boundary conditions are solved using the Runge-Kutta-Fehlberg algorithm with a local non-similar transformation. The influence of Brownian motion parameter (...

We study temperature effect on anomalous viscosity of Graphene Hall fluid within quantum many-vortex hydrodynamics. The commonly observed filling fraction, ν in the range 0 <ν < 2 is considered. An expression for anomalous viscosity dependent on a geometric parameter-Hall expansion coefficient is obtained at finite temperatures. It arises from strained induced pseudomagnetic field in addition to an anomalous term in vortex velocity, which is responsible for renormalization of vortex-vort...

The combined effects of chemical reaction and viscous dissipation on hydromagnetic mixed convective flow towards a vertical plate embedded in a highly porous medium with radiation and internal heat generation has been examined. The governing boundary layer equations have been transformed to a two-point boundary value problem using a local similarity approach and solved numerically using the Newton Raphson shooting method alongside the Fourth-order Runge - Kutta algorithm. The effects of vario...

This paper investigates the hydromagnetic stagnation point flow of an incompressible viscous electrically conducting fluid towards a stretching sheet in the presence of radiation and viscous dissipation. The Newton-Raphson shooting method along with the fourth-order Runge-Kutta integration algorithm has been employed to tackle the third order, nonlinear boundary layer problem governing the flow. Numerical results for dimensionless local skin friction coefficient and the local Nusselt numbers ...

Cassava (Manihot esculenta Crantz) is a staple food for many people in the tropical regions. However, yield of cassava has reduced of late due to high incidence of cassava mosaic disease (CMD) which is caused by the cassava mosaic virus (CMV). This necessitated the study on the production of disease free cassava materials from CMD cassava plants through somatic embryogenesis. CMV infected cassava leaves were cultured for callus tissue induction and somatic embryos (SE) generation on modified ...

An experiment was carried out to study the sensitivity of amaranthus to different sources of soil nutrients and different amounts of irrigation water at different temperatures. Nitrogen (N) rich materials (compost/poultry manure) and carbon (C) rich material (biochar) used included poultry manure + rice husk biochar (PM+RB), poultry manure + sawdust biochar (PM+SB), rice husk compost + rice husk biochar (RC+RB), sawdust compost + sawdust biochar (SC+SB) mixed at 10 ton ha-1 N rich material to...