The dispersion of air into water was studied in a tall agitated vessel (ungassed liquid
depth = 2.4 x vessel diameter) fitted with four different triple impeller combinations:
1. Three identical Rushton turbines
2. One ...
This thesis is a description of an experimental study of gas-liquid
dispersion in mechanically agitated vessels. The objectives of the
project were to investigate scale-up and to compare different
agitator types. Three ...
Heat pipe heat exchangers (HPHEs) offer many advantages over other types of
heat exchangers for the recovery of heat from industrial gaseous waste streams in
the low and medium temperature ranges. Heat pipes employed in ...
This research has been concerned with the oxidation
and corrosion of iron and mild steels, with particular
reference to the importance of the mechanical properties
of the surface oxides formed. A vibration technique ...
The basic properties of arcs in flowing ga-,es, minimum
ignition energy and quenching distances are the\focal points of this
research. The flow parameters turbulence, pressure, velocities, fuel-air ratio etc. are varied ...
A portable and compact demodulation system was constructed and calibrated. It was
found that the best performance could be achieved using the peak detection algorithm
written in a LabView™ program. A resolution of ...
Three dimensional complex flows particularly those of turbomachinery present
challenges to current measurement technology in terms of restricted optical access,
measurement accuracy for the on-axis velocity component, ...
This thesis reports the results of a detailed programme of
research on airblast atomization carried out using a specially
designed plain-jet atomizer in which the fuel is injected into
a high velocity airstream in the ...
During the anaerobic corrosion of steel, hydrogen sulphide
(H2S) evolution by the Sulphate-Reducing Bacteria (SRB)
promotes hydrogen absorption by enhancing cathodic hydrogen
evolution and inhibiting the combination of ...
Systems development has been a topic of discussion for many years, with the growth of the Information Technology (IT) industry. Many organisations use systems to allow them to have more control over the processes that are ...
A Kalman filter is used to integrate the outputs from a
Global Positioning System and an Inertial Reference System
inside a Flight Management Computer.
To initialise the Kalman filter, account is taken of the 1RS
errors ...
This research proposes a generic decision making system structure for real time
despatch control in small Flexible Manufacturing Systems. This is to satisfy the requirement for low cost control systems that can be flexibly ...
Gaseous and particulate emissions from combustion devices are implicated in many
atmospheric environmental pollution concerns. Lean, premixed, prevaporised combustion is
widely regarded as the most practical technique ...
Testing was performed on three point bend specimens machined from parent plate and
welded samples machined such that the crack propagated down the heat affected zone.
Specimens were subjected to tension-tension loading ...
The existence of belt misalignment in the Van Doorne metal pushing V-belt
continuously variable transmission (CVT) has always been recognised by researchers
and the manufacturers themselves. However, its effect has always ...
The ability to accurately predict the entire performance range of a centrifugal
pump is commercially valuable. Pump manufacturers are reluctant to diversify
their product portfolios unless they have confidence in their ...
Increased demands for precision components made of brittle materials such as
glasses and advanced ceramics, are such that conventional (free abrasive) grinding
and polishing techniques can no longer meet the requirements ...
This thesis proposes a workable application philosophy for
state of the art tools operating at the
Design/Manufacturing interface. It promotes an
organisational approach in developing a framework for a
strategic Design ...
The metal transfer process in MIG welding has been investigated. The
heat balance of the melting process, forces acting on the wire tip and
droplets, and droplet movement were examined quantitatively both under
steady ...
A general method for the optimal design of large laminated
composite structures, that allows full design variable (ply
thickness and orientation) freedom, has been developed .. The
number of variables and constraints, ...