Division of Mechanical Sciences: Recent submissions
Now showing items 421-440 of 1804
-
Tufting of carbon fibre/epoxy composites for improved damage tolerance
Laminated composite structures are susceptible to delamination and debonding during their service life due to their poor out-of-plane interlamellar properties. Such damage can occur either during manufacturing or during ... -
Investigations on Impinging Shock Wave and Boundary Layer Interactions in Hypersonic Flow
Shock boundary layer interactions (SBLIs) rank among the most fundamental problems in high-speed aerodynamics and are a primary concern in hypersonic flows. Shocks at hypersonic speeds are typically strong enough to separate ... -
Experimental and Numerical Studies on Low Emission Syngas Combustion
The present study concerns experimental and numerical investigation of the combustion of low-calorific value syngas in an optically accessible reverse flow combustion chamber. Several modes of operation are investigated ... -
A phenomenological one-dimensional model for elastic ribbons
Ribbons exhibit fascinating buckling-dominated behavior under mechanical loading because of a unique combination of geometric dimensions. The recent interest in examining engineering applications of ribbon-like structures ... -
Interference Effect of Closely Spaced Square Footings on Geocell Reinforced Sand and Clay Beds: Experimental and Numerical Studies
With rapid growth of construction rate and lack of suitable land sites for construction, placing building foundations close to each other and on soft-grounds is inevitable. When the foundations are placed close enough on ... -
Numerical and experimental investigation of Process-Structure-Property relationship in Organic Photovoltaics
Organic Photovoltaics (OPVs) are considered to be potential contenders amongst the third-generation solar technologies. The primary reason for their popularity has been the possibility of applying various cost-effective ... -
Polymer-based investigations into the surface chemistry of some sulphide minerals and the beneficiation of a low grade siliceous copper ore
Tanzania is endowed with rich mineral deposits containing gold, tanzanite, diamond, coal, uranium, iron ore, gemstones with low grade of the sulphide minerals namely chalcopyrite and pyrite. It is the third largest producer ... -
Experimental and numerical study of sink flow turbulent boundary layers
Sink flow turbulent boundary layers (TBLs) develop in the incompressible flow be- tween two convergent, plane smooth walls and represent a family of favorable pres- sure gradient TBLs. These are the only smooth wall TBLs ... -
Adaptive Filtering for Large Eddy Simulation of Flows with Shocks and its Application to Launch Pad Deflectors
During lift-off of launch vehicles jets from nozzles impinge on a wedge deflector which directs the jet away from the rocket along passages. As a high Reynolds number turbulent flow the whole region has a broad spectrum ... -
Structural dynamic testing for seismic response simulation and time variant reliability estimation
The research work reported in this thesis addresses a few problems which arise in the context of experimental dynamic testing of engineering structures under earthquake loads. Firstly, we consider the problem of characterizing ... -
Global and combined global-local response sensitivity analyses of uncertain structures based on model distance measures
The work reported in this thesis is in the area of global response sensitivity analysis (GRSA) of engineering systems in which the uncertainties associated with external actions and/or system parameters need to be explicitly ... -
Propagation characteristics in elastic waveguide with discrete nonlinearity
Wave propagation in elastic continuum is a subject of interest in many fields of engineering and has been explored for several decades from theoretical, computational and experimental perspective. In this context, a ... -
Syngas Production by Methane Reforming and H2 Purification by CO Abatement over Transition Metal-Substituted Reducible Oxides
Methane and carbon dioxide are two major greenhouse gases, with CH4 having higher potency towards global warming. Several methods have been explored for transforming CH4 into higher value products, of which syngas production ... -
Jet Injection into Supersonic Crossflow: Flowfield and Mixing studies
Supersonic air-breathing engines or scramjets are perhaps the most important technological hurdles towards the development of hypersonic transportation vehicles for both easy access to space and for missile related ... -
Experimental studies on Soot and Particulate reduction in Heavy Fuel Oil Combustion
Heavy fuel oil (HFO) is extensively used in industrial burners and marine engines. HFO droplet combustion gives rise to carbon particulates generated by pyrolysis, which are called cenospheres. There is a current hypothesis ... -
An Integrated Choice and Latent Variable Framework to Incorporate the Influence of Travel Time Variability on Truck Route Choice
Route choice models (or path choice models) are useful for quantifying travellers’ preferences for or sensitivity to route attributes, predicting network-level traffic flows, examining the influence of information provided ... -
Study of Solvent Induced Crystal Polymorphism via Molecular Simulations of Crystal Nucleation
The ability of a compound to exist in different crystal structures is called crystal polymorphism and such crystals of varied spatial arrangement are called polymorphs. The polymorphic forms can differ in their properties ... -
Kinematic Design and Optimal Synthesis of Parallel Manipulators Using Monte Carlo Method
Parallel manipulators are widely used for a variety of tasks where increased accuracy and large load carrying capacities are required. In this work, we propose a Monte Carlo based method to represent and quantify the ... -
Shock Dynamics due to Downstream Pressure Perturbations: Idealization of Transonic Unstarted Cascade Flutter
Shock wave unsteadiness is an important phenomenon in high-speed aerodynamics. This phenomenon is observed in many locations of high-speed vehicles, such as supersonic inlets, ramjet engines, transonic airfoils, high-speed ... -
Experimental Investigation of Fuel Drop Impact on Unheated and Heated Solid
The modelling of spray-wall interaction encountered in engine combustors relies heavily on studies of single drop impact on heated solid surfaces. In the present thesis, the impact of a single fuel drop on a hot, smooth ...