Browsing by Author "Okedoye, Akindele Michael"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    Item
    Heat and Mass Transfer Mixed Convective Electrically Conducting Nanomaterial Flow Over a Stretching Sheet
    (Journal of Multidisciplinary Engineering Science and Technology (JMEST), 2024) Lawal, Muhammad Muhammad; Ogboru, Oghenero Kelvin; Okedoye, Akindele Michael
    The study of heat and mass transfer in electrically conducting nanomaterial flows over a stretching sheet is a complex phenomenon involving fluid mechanics, thermodynamics, and electrical conductivity. The flow of electrically conducting nanomaterials over a stretching sheet is governed by the Navier-Stokes and Maxwell equations, which describe momentum and electric field distributions. The electrical conductivity of the nanomaterials plays a crucial role in the flow behavior, as it affects the electric field distribution and fluid motion. Numerical simulations using the finite volume method were conducted to investigate the effects of electrical conductivity, nanoparticle volume fraction, and stretching velocity on the flow, heat, and mass transfer characteristics. Results showed that electrical conductivity significantly impacts the flow structure, leading to the formation of electrically induced vortices and streamlines. The nanoparticle volume fraction also affects the flow behavior, increasing fluid viscosity and decreasing fluid velocity. These findings have important implications for the design and optimization of nanomaterial-based devices and processes, such as energy harvesting, water purification, and drug delivery.
  • No Thumbnail Available
    Item
    Mathematical Modelling of the Dynamics and Control of Communicable Diseases with Emphasis on Cholera Epidemics
    (Asian Journal of Applied Science and Technology (AJAST), 2023) Avwerosuo, Anthony Akalusi; Okedoye, Akindele Michael
    Cholera remains a disease of public health importance, associated with high morbidity and mortality. This research provides a mathematical approach on the effective control and possible eradication of Vibrio cholera causing menace. This was done using a deterministic SPIRB mathematical model, were we defined S-susceptible, P-protected, I-infected, R-recovered and B-bacteria. We carried out mathematical analyses on the model, such as the invariant region analysis, non-negativity of solutions, equilibrium points, basic reproduction number, stability analysis, sensitivity analysis and bifurcation analysis. All solutions of the SPIRB model are positive and there exists an invariant region for the model. Although, the disease-endemic equilibrium of the model is globally asymptomatically stable, the disease-free equilibrium of the model is not globally stable but locally asymptomatically stable. It was also revealed that the recruitment rate into the susceptible class, the probability that each contact is effective enough to cause infection, the contact rate with contaminated environment, the average contribution of each infected individual to the pathogen population of Vibrio cholera, and the progression rate of protected individuals to the susceptible class are the most sensitive parameters. We showed via the bifurcation analysis that if the progression rate of protected individuals to the susceptible class can be kept very close to zero, say between zero and unity, then the disease-free equilibrium can be kept stable. Numerical simulations were conducted to show the effects of some parameters on the classes
  • No Thumbnail Available
    Item
    On the Unsteady Free Convective Flow with Radiative Heat Transfer of Sisko Fluid
    (IJISET - International Journal of Innovative Science, Engineering & Technology, 2015) Okedoye, Akindele Michael
    An approximate numerical solution of an unsteady free convective flow with radiative heat transfer past a flat plate moving through a binary mixture for a Sisco fluid has been obtained by solving the governing equations using numerical technique. Numerical calculations are carried out for different values of dimensionless parameters and an analysis of the results obtained shows that the flow is influenced appreciably by the chemical reaction, heat source, suction/injection at the wall and also the influence of Dufour and Soret in Sisco fluid.