Journal Articles

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Browsing Journal Articles by Author "Ajadi, S. O."

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    Non-Isothermal Effect on the Motion of a Particulate Flow between Two Parallel Plates
    (2009) Ajadi, S. O.; Odejide, S. A.; Fareo, A. G.
    The non-isothermal flow of dusty, viscous, incompressible conducting fluid between two oscillatory parallel plates is studied. This flow is described by the continuity, momentum and the energy equation, which accounts for the heat and mass transfer. Closed-form solutions method initiated by the boundary conditions were obtained for zero and non-zero pressure gradient. These solutions show that the non-isothermal nature of the flow has led to a dramatic departure from the isothermal case. The solutions were further demonstrated graphically to elucidate the significance of parameters such as Prandtl number (Pr), the magnetic parameter (Bo) and the Grashoff number (Gr) on the velocity profiles.
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    Thermal Instability in a Model Chain Branching - Chain Breaking Kinetics
    (2005) Ajadi, S. O.
    Thermal instabilities such as thermal explosion and thermal ignition are examined in a two-step reactions mechanism, comprising of a chain-branching and a chain-breaking step. The aim of this study is to examine the influence of the chain-breaking step on these instabilities and then compare our findings with the existing results for the one step model, which is mainly a branching step. The resulting mathematical equations were subjected to a variational method executed on the Mathematics package for the analysis of thermal explosion, while the thermal ignition is amenable to simple integration. These results show that the chain branching step leads to a complete departure from existing results for the one step model. It is established that the Frank-Kamenetskii parameter and the ignition time are monotonically decreasing functions of the heat parameters.