PROF. LUTI FELIX M.

This paper describes a finite difference experiment to simulate the transient development of the convection column above a strip of uniform high temperature source in a stratified uniform cross flow atmosphere. The k-e model of turbulence is used and an upstream weighted scheme for this vorticity-stream function formulation is employed. Some computation results for a 195m wide source are presented. The immediate goal of the undertaking was to devise a scheme which could yield realistic flow 'boundary conditions' in the immediate vicinity of a fire to enable one to model the detailed structure of the fire region. The predictions are quite consistent with observations and this provides the link between the heat source and environmental parameters. This scheme, together with a refined near zone fire model, can be used to describe the interplay between the heat source (fire) component and the environmental components of a mass fire system.

Mean temperatures were measured along the axis of propane gas flames using a porous ceramic burner. Data for fire heat release rates ranging form 13.3kW to 30.6kW were taken and analyzed. It was found that the lower zone of a fire in a clam environment could be conveniently divided into three regions. For the same heat release rates, the fires were subjected to a cross flow of 0.72ms-1 and it was found that along the axis, the three zones could be identified. The excess temperature in the intermittent zone decreased with height to the power of 0.60 for the calm environment and 1.11 with crossflow. In the plume zone, excess temperature decreased with 1.87 power for the clam case and 2.05 with crossflow case, all data when plotted on log plots fell on a single curve.

Mean temperatures were measured along the axis of propane gas flames using a porous ceramic burner. Data for fire heat release rates ranging form 13.3kW to 30.6kW were taken and analyzed. It was found that the lower zone of a fire in a clam environment could be conveniently divided into three regions. For the same heat release rates, the fires were subjected to a cross flow of 0.72ms-1 and it was found that along the axis, the three zones could be identified. The excess temperature in the intermittent zone decreased with height to the power of 0.60 for the calm environment and 1.11 with crossflow. In the plume zone, excess temperature decreased with 1.87 power for the clam case and 2.05 with crossflow case, all data when plotted on log plots fell on a single curve.

Galactosaemia is a disorder of galactose metabolism in which raised levels of galactose and galactose-l-phosphate damage various organs. It is a very rare disease (incidence 1 in 60,000) and the diagnosis is often missed, leading to poor prognosis. A case of clinical galactosaemia that was diagnosed at the age of 11 months is reported. It is important to be aware of this condition as early treatment may prevent some of the complications.

To identify the most appropriate technology and assess the possibility of manufacturing micro-hydropower units (mHPU) utilizing the skills available within the manufacturing informal sector in Kenya (Jua Kali). The units, which are not supposed to be sophisticated in design and performance, should provide acceptable efficiency and a power output of the order of 1 to 5 kVA, single phase.

This report covers the deliberations of the Expert Group Meeting on Engineering Education in Africa, which was held at the UNESCO Nairobi Office, Kenya from 1-2 November 1995. It discusses the major problems facing engineering education and highlights some of constraints and presents recommendations for overcoming them. In particular the report makes recommendations on important factors such as finance, university-industry collaboration, student creativity, innovation in the delivery and administration of engineering education, training for self-employment, staff development and the amelioration of the brain-drain.