Browsing by Author "Olotu, O.T."
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Item The combined effects of uniform partially distributed moving mass, coriolis and centripetal forces on the response of Euler-Bernoulli beams(ICASTOR Journal of Mathematical Sciences, 2011) Gbadeyan, J.A.; Olotu, O.T.; Dada, M.S.In this paper, the dynamic response of a pinned-pinned (simply-supported) Euler-Bernoulli beam under the influence of a uniform partially distributed moving mass, whose velocity and magnitude are assumed constant, is studied. The influence of both Coriolis and centripetal forces, which are always assumed negligible, is then analyzed. The governing partial differential equation of the beam is first transformed into a set of ordinary differential equations using separation of variable technique. Next, Duhamel’s integral solution technique is adopted for analyzing the influence of the uniform partially distributed moving mass, Coriolis and centripetal forces on the dynamic response of the beam. Various numerical results, which showed the individual as well as the combined influence of the distributed moving mass, Coriolis and centripetal forces on the response of the beam, are presented. Furthermore, concluding remarks, which are useful for the purpose of structural designs, are presented.Item Influence of MHD and Heat Transfer on Blood Flow in a Stenosed Porous Artery: DTM Approach(Journal of Science and Information Technology, 2021-06) Abubakar, Jos U.; Okunola, D.T.; Olotu, O.T.; Ayinde, M.A.This paper investigates the motion of blood in a stenosed porous artery subjected to heat transfer and magnetohydrodynamic impact. Atherosclerosis having attributed as one of the arterial circulation diseases risk factor, caused by the build-up of plaques resulting to stenosis and hardening in the arteries, hence the need for investigation of stenosed artery become imperative. The governing equations were modeled with assumption that the stenosis is in form of cosine-shaped. Differential Transformation Method (DTM) was implemented on the obtained momentum and energy equations, from which expressions for axial velocity and temperature were deduced. The volumetric flow rate and wall sheer stress expressions were also obtained. These expressions were used to simulate the effects of heat transfer parameter, magnetic field among other flow parameters on the wall sheer stress, volumetric flow rate, temperature and velocity fields. It was observed that an increase in the empty spaces or voids present in the artery (porosity) and the magnetic number appreciates both blood temperature and its velocity significantly. It is believed that the implementation of the present investigation will assist in preparing and forecasting for a corrective procedure.