Oluwole D Makinde

Oluwole D Makinde
Stellenbosch University | SUN

PhD

About

771
Publications
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25,285
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Publications

Publications (771)
Book
Applications of Hybrid Nanofluids in Science and Engineering delves deep into the multifaceted realms in which these dynamic fluids are playing pivotal role in various fields. This comprehensive volume elucidates the diverse applications and promising potentials of hybrid nanofluids. It introduces hybrid nanofluids, their preparation methods, ther...
Article
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Nanoparticles show superior potential for enhancing thermal properties compared to conventional particle–liquid suspensions. This investigation delves into magnetohydrodynamics (MHD) drift, heat, and mass transfer effects within a Jeffery nanoparticle liquid. The study includes transference equations that consider the influences of thermophoresis a...
Article
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In this research, we investigate how the hall current and electroosmosis effect the rotating Eyring–Prandtl fluid flow in a wavy microchannel when mixed convection and joule heating are present. We employ the sophisticated peristaltic wave approach to construct a model that exhibits nonuniform boundaries characterized by diverse amplitudes and phas...
Article
The impact of chemical reaction and cross diffusion on heat and mass transport characteristics of viscoelastic flow of Al2O3 and CuO oil-based nanofluids past a porous nonlinear stretching surface has been examined. Similarity transformation was used to transform the governing partial differential equations into coupled nonlinear ordinary different...
Article
This study investigates the role of time-fractional derivatives in the entropy analysis of mixed convection in a reacting nanofluid within a vertical permeable channel containing a Darcy-Forchheimer porous medium. This is crucial for enhancing heat and mass transfer, incorporating memory effects, and addressing delayed responses in various engineer...
Article
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Variable viscosity, activation energy and microgravity effects on Darcy nanofluid for the thermal performance improvement in thermal energy storage systems through stretching flat plate solar collector is the focus of this research. Thermal energy storage (TES) can be improved though solar collectors, phase change materials and photovoltaic cells u...
Article
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Faba bean is one of the most important grown plants worldwide for human and animal. Despite its various importance, the productivity of faba bean has been constrained by several biotic and abiotic factors. Many faba bean pathogens have been reported so far, of which the most important yield limiting disease is Chocolate Spot Disease (Botrytis fabae...
Preprint
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This study presents a complete investigation of the chaotic fractional-order exothermic decomposition in a flow channel, concentrating on the interaction between reactant consumption and thermal dynamics. By employing a time-fractional derivative method, we originate and solve the system of differential equations along with boundary conditions, lea...
Article
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The utilization of external magnetic or electric fields, particularly through a Riga setup, markedly enhances flow dynamics by mitigating frictional forces and turbulent fluctuations, thereby facilitating superior flow management. Such improvements are especially beneficial in optimizing the operational efficiency of machinery and turbines. Our res...
Article
Forced convective heat transport in a rectangular porous channel with anisotropic permeability is investigated in this study. A fully developed flow field is assumed, and the Brinkman-Forchheimer extended Darcy’s equation is adopted to model the fluid flow. The thermal field is developing. A weak formulation of the momentum equation has been obtain...
Article
The purpose of this study is to investigate the transient dynamics of a third-grade fluid, which can undergo exothermic reactions in a saturated porous microchannel. The adverse pressure gradient force constitutes the primary flow driver. In addition to exothermic reactions, the system is also subjected convective cooling at the microchannel bounda...
Article
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The present study was studied to better understand the mechanisms of heat transfer through porous media using hybrid nanofluids and focuses on the rate of heat transfer efficiency due to different shapes of TiO2-CuO nanoparticles. This investigation was performed through the nonlinear stretched sheet. TiO2-CuO hybrid nanofluids over non-linear stre...
Article
This study investigates heat, mass transport, and entropy production in Ellis nanofluid flow through an inclined permeable microchannel, considering Navier's slip effects with convective boundary conditions. It incorporates nanoparticle's thermophoresis and Brownian motion effects under a transverse magnetic field, with fluid suction and injection...
Article
This paper investigates entropy generation rate in a temperature-dependent variable viscosity unsteady nanofluid flow past a convectively heated impulsively moving permeable cylindrical surface. The governing equations based on the modified Stokes first problem assumption are obtained and transformed using appropriate similarity variables into nonl...
Article
This paper presents a theoretical investigation of the inherent irreversibility in unsteady fractional time derivative mixed convection of a reacting nanofluid with heat and mass transfer mechanism over a slippery permeable plate embedded in a Darcy–Forchheimer porous medium. The model fractional partial differential equations are obtained based on...
Article
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Hepatitis E virus (HEV) is one of the emerging zoonotic diseases in Sub-Saharan Africa. Domestic pigs are considered to be the main reservoir for this infectious disease. A third of the world’s population is thought to have been exposed to the virus. The zoonotic transmission of the HEV raises serious zoonotic and food safety concerns for the gener...
Article
This research aims to utilize the local thermal non-equilibrium (LTNE) model to discuss the heat transfer within a thermally developing region. This study delves into the effects of magnetohydrodynamics couple-stress fluid flow in a channel filled with porous medium within the framework of the LTNE model with consideration for axial conduction. The...
Article
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The cassava virus diseases co-dynamics model is formulated and analysed using ordinary differential equations theories. The modelling involves cassava plant and whitefly vector population, with aspects of Farmer's awareness level. The evaluation of farmers' awareness inverted numerically and found that increasing awareness levels among farmers decr...
Article
Purpose This paper aims to investigate the hydrodynamic instability properties of a mixed convection flow of nanofluid in a porous channel. Design/methodology/approach The treated single-phase nanofluid is a suspension consisting of water as the working fluid and alumina as a nanoparticle. The anisotropy of the porous medium and the effects of the...
Article
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Activation energy and thermal radiation as a means of heat transfer are significant and fascinating phenomena for scientists and researchers because of their significance in cancer treatment. As a result, heat kills cancer cells and shrinks tumors, making hyperthermia therapy a cutting-edge cancer treatment. This paper examines the peristaltic moti...
Conference Paper
In this paper, we proposed a non-linear deterministic malaria model of the impact of temperature variability on the epidemics of malaria transmission. This model focus on the role of temperature variation on malaria transmission since temperature variability strongly determines the transmission of the disease. Firstly, we have shown the invariant r...
Poster
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IMAME’2024 (https://sites.google.com/view/imame24), Errachidia, Morocco, April 22-25, 2024. IMAME'2024 is dedicated to Prof. Delfim F. M. Torres.
Article
We consider heat and mass transfer analysis of magnetohydrodynamic (MHD) Carreau fluid flow along a stretching sheet in a permeable medium with impacts of melting condition, heat generation, double diffusion, and variable thermal conductivity. The novelty of the present work is to study the effects of melting heat transfer and heat generation on MH...
Article
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The present study focuses on the predictions of flow behavior, streamlines and some other factors of a two adjacent-sided converging and diverging lid-driven square cavity filled with fluid. In the diverging case, the top wall of the cavity is considered to be in motion from left to right, and the left wall is considered to be in motion from top to...
Article
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This paper addresses the unsteady hydrodynamic convective heat and mass transfer of three fluids namely air, water, and electrolyte solution past an impulsively started vertical surface with Newtonian heating in a porous medium under the influences of magnetic field and chemical reaction. Suitable dimensionless parameters are used to transform the...
Article
This article numerically investigates the buoyancy-assisted convective flow and associated thermal characteristics in an inclined parallelogram-shaped porous geometry containing heat source and sink of different lengths placed at various locations. The left tilted wall has a hot source, and right tilted wall contains a cold sink, while the remainin...
Article
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An attempt has been made to investigate the hydromagnetic free convection of nanofluid in the vicinity of the lower deflation tip of a sphere which is placed at a porous medium under the synchronized influence of both thermal and mass transfer. An identical magnetic field is transversely imposed on the conducting nanofluid in direction perpendicula...
Article
Purpose The purpose of this study is to investigate the entropy generation in different nanofluids flow over a vertically moving rotating disk. Unlike the classical Karman flow, water-based nanofluids have various suspended nanoparticles, namely, Cu, Ag, Al 2 O 3 and TiO 2 , and the disk is also moving vertically with time-dependent velocity. Desi...
Article
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Mathematical model on a single line was presented based on four equations; operation cost, passenger cost, total cost and Bus Rapid Transit (BRT) service frequency. The analysis of the model shows that the increase of BRT services frequency tends to increase total passenger demand which lead to decrease operational cost and passenger cost in terms...
Article
The present analysis signifies the impacts of fraction calculus on the MHD analysis of an incompressible fluid flow with entropy generation, viscous dissipation, and joule heating carried out between two endless vertical plates. The left vicinity of the MHD fluid flow channel has a convectively hot MHD fluid with a specific temperature that produce...
Article
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This study focuses on fractional order derivatives for the unsteady flow of MHD methanol-iron oxide nanofluid over a permeable vertical plate. The study incorporates fractional order derivatives to exhibit the system mathematically. The concluding model, which consists of the system of PDEs, has been solved via the Finite Difference Method, and gra...
Article
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Mounting temperatures in electronic devices during operation may damage sensitive internal components if too much thermal energy accumulates inside the system. The advent of an innovative ultrahigh-performance thermal management technology known as nanofluid has provided a veritable platform to improve the system performance and reliability by remo...
Article
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Heat transfer and convective flow of Cu–H 2 O nanofluid in a microchannel with thermal radiation has many attributes in engineering, industries, and biomedical sciences including cooling of electronics, drug delivery, cancer therapy, optics, missiles, satellites, and lubricants. Therefore, this paper aims to investigate the hydrodynamical behaviors...
Article
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This paper presents new results for the dynamic behaviour of fluid around a rotating turbulator in a channel. The turbulator has a propeller form which is placed inside a flat channel. The research was carried out using 3D numerical simulation. The rationale of the experiment was as follows: we put a propeller-turbulator inside a flat channel, and...
Article
This work presents a theoretical numerical study of the bioconvection flow of Prandtl–Eyring nanofluid through a stretching cylinder with gyrotactic microorganisms. The mathematical model developed also incorporated the inclined magnetic field and heat generation effects. Further, stratification conditions are considered at the boundary of the stre...
Article
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The purpose of this study is to analyze the impact of control strategies, namely, insecticide spray, roguing of a diseased tomato plant, and protective netting to protect tomato plant from tomato yellow leaf curl virus disease (TYLCVD). For this, we formulate and analyze a simple deterministic model for the transmission dynamics of TYLCVD that inco...
Article
The species chemical reaction is an especially significant event in transient fluids. This is a crucial element that raises the temperature as a result of a noticeable rise in reaction rates. Hydrometallurgical industries and chemical engineering, such as the manufacturing of polymers and the processing of food, put a significant amount of concentr...
Article
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This article considered the steady two-dimensional boundary layer flow of incompressible viscous Casson nanofluids over a permeable, convectively heated, shrinking/stretching slippery sheet surface. The achievements of this work are extremely relevant, both theoretically with respect to the mathematical modeling of non-Newtonian nanofluid flow with...
Article
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The non-Newtonian fluid model helps to visualize the fluid movements in modern industrial materials for the enhancement of work productivity. Therefore, this numerical investigation examines the flow behaviour of Powell-Eyring fluid over the stretching sheet with variable electric conductivity and thermal radiation. We have used the Lie group analy...
Article
This study investigates the combined effects of magnetic field, Joule heating, viscous dissipation, thermophoresis, and Brownian motion towards a convectively heated shrinking and slippery surface on a stagnation point flow of nanofluid is theoretically examined. The modified Buongiorno model for nanofluid flow is employed and numerically solved us...
Article
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This paper examines the flow structure and heat transfer characteristics of a reactive variable viscosity polyalphaolefin (PAO)-based nanolubricant containing titanium dioxide (TiO2) nanoparticles in a microchannel. The nonlinear model equations are obtained and numerically solved via the shooting method with Runge-Kutta-Fehlberg integration scheme...
Article
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In this study, we examined the impact of Cu-H2O nanoparticles on two-dimensional Casson nanofluid flows past permeable stretching/shrinking sheet embedded in a Darcy-Forchheimer porous medium in the presence of slipperiness of surface, suction/injection, viscous dissipation, and convective heating. Using some realistic assumptions and appropriate s...
Article
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This study proposes a non-linear mathematical model for analysing the effect of COVID-19 dynamics on the student population in higher education institutions. The theory of positivity and boundedness of solution is used to investigate the well-posedness of the model. The disease-free equilibrium solution is examined analytically. The next-generation...
Article
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This paper deals with the analysis of the flow and heat transfer performance of ternary nanofluid flowing past a stretching sheet under the influence of quadratic convection. The ternary nanofluid is formed by suspending three different nanoparticles, namely, titanium dioxide (TiO2), silver (Ag) and graphene (Gr) in the base fluid water (H2O). Thus...
Preprint
Full-text available
The present study is focused on the numerical simulations of forced convection characteristics with parabolic temperature variations in a wall-driven C-Shaped cavity using the lattice Boltzmann method. In this study, the flow parameters being investigated are Reynolds number, Nusselt number, skin friction coefficient, kinetic energy density functio...
Article
This study analyses the influence of axial conduction and Biot number on the forced convective heat transfer characteristics in a duct filled with porous material that is thermally developing under local thermal non-equilibrium (LTNE). Channel walls are subjected to heat flux. The unidirectional flow in the porous region corresponds to the Darcy Br...
Article
A second law analysis is explored to investigate the irreversibility properties in a transient, porous channel flow of a viscous, incompressible, and non-Newtonian fluid. The non-Newtonian fluid model is of a Generalized Newtonian Fluid type with no elastic properties but with shear-thinning viscosity. Additionally, given that the flow is non-isoth...
Article
The transient dynamics of nonlinear dispersion of a polymeric pollutant ejected by an external source into a laminar flow of a Newtonian liquid flowing through a rectangular channel is investigated. The Boussinesq approximation is assumed for the density variation with pollutant concentration. The governing equations of mass and momentum conservati...
Article
Nanofluids have analysis of wide applications of energy technologies in recent times as the thermal amplification of several manufacturing industries. A mathematical model is developed to stimulate electrokinetic transfer through peristaltic pumping of couple-stress micropolar nanofluids in a microchannel. The effects of Joule heating and chemical...
Article
The disease in prey causes the indirect effect on the disease transmission of prey-predator interactions; this phenomenon of predator-dependent disease transmission scenario can arise as a consequence of anti-predator defence behaviour, debilitating the immune system of the prey. This concept is implemented in the proposed nonlinear mathematical pr...
Article
This paper presents a novel algebraic method for the construction of Lyapunov functions to study global stability of the disease-free equilibrium points of deterministic epidemic ordinary differential equation models with mass action and standard incidence functions. The method is named as Jacobian-Determinant method. In our method, a direct algebr...
Article
Full-text available
Human immunodeficiency virus (HIV) and tuberculosis (TB) have long been known to have a synergistic relationship. This is a result of each of the diseases impacting negatively on the immune system of the infected persons. The impact of these diseases on workforce productivity is studied in this paper from the viewpoint of dynamical systems. In this...
Article
The problem of illicit drug use with its associated hazardous effects on social behaviour and human population dynamics require an intervention. In this study, a compartmental deterministic model for the dynamics of illicit drug use student population is proposed and analysed. The illicit drug use threshold, R 0 , associated with the model is compu...
Article
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The present study aims to discuss the Williamson fluid flow and heat transfer across a permeable stretching cylinder with heat generation/absorption effects. The effects of viscous dissipation, Joule heating, and magnetic field are also taken into account. The BVP‐4C numerical solver in MATLAB is adopted for all the numerical simulations in the pre...
Article
The educational value of nanofluids in several industrial and biological sectors, particularly in fluid movement systems known as peristalsis, has piqued researchers' interest in studying the peristaltic movement of nanofluids. Additionally, nanoparticles have crucial roles in many engineering and manufacturing processes, including those involving...
Article
In this study, we investigate the unsteady incompressible flow of ethylene-glycol (EG) based MnZnFe2O4/ FeCrNbB hybrid nanofluid through a horizontal channel. Three semi-circular heaters are mounted on the lower channel wall, whereas four porous fins are mounted on the upper channel wall. The Forchheimer model is utilized to describe convective nan...
Article
Full-text available
Unsteady MHD mixed convection of nanofluid heat transfer in a permeable microchannel with temperature-dependent fluid properties is studied under the influence of a first-order chemical reaction and thermal radiation. The viscosity and thermal conductivity are assumed to be related to temperature exponentially. Using suitable dimensionless variable...
Article
This paper is concerned with the rotational motion of the impeller and the thermal buoyancy within a mechanical mixer. The task was investigated numerically using the ANSYS-CFX simulator. The programmer is based on the finite volume method to solve the differential equations of fluid motion and heat transfer. The impeller has hot surfaces while the...
Research
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The representative schematic figure, FIG. 1 in Sec.IC (Generic Flow Model) in the original published paper 1 (https://doi.org/10.1063/5.0129864) was missing labels due to improper transfer of the manuscript during final production. These labels have been added in the new figure here, Fig. 1. The descriptions of these labels are found in the origina...
Article
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We analytically explore the flow of a Newtonian liquid forced to encroach a narrow tube of uniform cross-section, by an unsteady pressure gradient, assisted by an encroachment-rate dependent external force. This novel problem is thought to have interesting implications. For instance in medicine where narrow tubes like syringes and needles are typic...
Article
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The present problem explores the various aspects of natural convection and heat transfer within the micropolar hybrid nanofluid flow. The fluid flow is taken for horizontal, inclined and vertical positions of moving thin needle under quadratic thermal radiation effects. The governing equations of the flow are formed by observing physical interpreta...
Article
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In this paper, we present a nonlinear deterministic mathematical model for malaria transmission dynamics incorporating climatic variability as a factor. First, we showed the limited region and nonnegativity of the solution, which demonstrate that the model is biologically relevant and mathematically well-posed. Furthermore, the fundamental reproduc...
Article
Full-text available
This paper theoretically examined the inherent irreversibility in hydromagnetic mixed convection of a radiating adjustable viscosity nanofluid between two concentric inclined cylindrical pipes. Thermodynamics’ first and second laws are incorporated into the two-phase nanofluid flow model problem to explore the repercussions of thermophoresis, Brown...
Article
The importance of non-Newtonian fluid (Casson fluid) in industry is increasingly appreciated. However, little is known about the flow rheology of Casson fluid flowing over a Riga plate. Thus, the purpose of this investigation is to examine the nature of entropy generation (EG) and heat transfer (HT) on Casson hybrid nanofluid flow past a Riga plate...