Bayo Yemisi Ogunmola

University of Lagos | Unilag · Department of Mechanical Engineering

The penetration of fuel spray as a result of the mixture of fuel droplet and entrained air usually generate nonlinear models whose solutions are normally difficult to realize analytically. This present study presents general approximate analytical solution to such problem by employing Differential transform Method (DTM). At the level of two-phase f...

The development of mathematical models for describing the dynamic behaviours of fluid conveying pipes, micro-pipes and nanotubes under the influence of some thermo-mechanical parameters results into nonlinear equations that are very difficult to solve analytically. In cases where the exact analytical solutions are presented either in implicit or ex...

In this study, heat transfer in a longitudinal rectangular fin with temperature-dependent thermal properties and internal heat generation has been analyzed using finite volume method. The numerical solution was validated with the exact solution for the linear problem. The developed heat transfer models were used to investigate the effects of thermo...

Regular perturbation technique is applied to analyze the fluid flow and heat transfer in a pipe containing third-grade fluid with temperature-dependent viscosities and heat generation under slip and no slip conditions. The obtained approximate solutions were used to investigate the effects of slip on the heat transfer characteristics of the laminar...

The study of internal chemical processes involving nitrogenous species forms an important part in the understanding of parameters which lower NOx emission from combustion systems. The focus of this research is to numerically model the prediction of formation of pollutant emission in a continuous internal combustion engine (ICE), from finite rate ch...

The use of solar energy for baking, heating or drying represents a sustainable way of solar energy applications with negligible negative effects. Solar oven is an alternative to conventional oven that rely heavily on coal and wood or Electric oven that uses the power from the National grid of which the end users have little or no control. Since the...

In this work, the design and development of a photovoltaic-powered dc vapour compression refrigeration system for developing countries such as Nigeria is presented. The effects of the variations of compressor speeds on the performance of the refrigerator were investigated. From the field performance test results of the system, at the compressor spe...

This solar conversion system incorporates a suction fan powered by a solar PV module. Located at the outlet of the chamber is the d.c suction fan utilised to achieve forced air circulation without the use of external power supply like grid electricity, fossil fuel and battery. Simple thermal energy balance equations and heat transfer equations were...

This work presents the changes in the pole figure characteristics of an aluminum alloy 6061 given 85% deformation by cold rolling and later heat treated at 400°C in different magnetic fields of up to 30 Tesla for different periods of time. Pieces of samples from the rolled specimen were heat treated in a resistive magnet of 30 Tesla strength with 5...

Cutting fluids of various types are usually employed to control the heat generated in machining. The continued application of conventional petroleum based metal working fluids is being challenged by the need to reduce overall volume of fluids, minimize health risks and bio-contamination. Bio-oils assisted machining is an environmental bio-compatibl...

Offshore pipeline and flow line systems define a variety of subsea architectures associated with Floating Production Storage and Offloading units (FPSOs) or Floating Storage and Offloading units (FSOs) that are usually employed for oil and gas production in deep and ultra deep waters. The design of such transmission facilities, must satisfactorily...

Aluminum alloy 6061 has been used extensively for structural and other applications. Its properties are modified by various heat treatments ranging from solution heat treatment to aging processes. In this work, aluminum alloy 6061 of about 13 mm thickness was solution heat treated at 560C for 2 hours, then quenched in water at room temperature. The...