Division of Mechanical Sciences: Recent submissions
Now showing items 101-120 of 2142
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Development of a Planar Robotic Platform with Localized Magnetic Actuation and its Applications for Untethered Ferromagnetic Robots and Shape-morphing Compliant Robots
This thesis focuses on the development of a solenoid-grid-based setup for independent planar actuation of multiple ferromagnetic robots referred to as ferrobots, by locally varying the magnetic field in different regions ... -
Studies on Hydrogen-Enriched Methane Combustion in a Trapped Vortex Combustor
Among conventional fossil fuel–based power generation technologies, gas turbines are among the cleanest and most efficient options. Replacing coal-fired power plants with natural gas–fired open-cycle gas turbines reduces ... -
Fracture and indentation behavior of shape memory alloys
Shape memory alloys (SMAs) are metallic systems capable of recovering large strains, typically in the range of 7 to 10%. A clear understanding of the fracture behaviour of SMAs is crucial to prevent failures, especially ... -
Process-Based Understanding of Ecosystem Carbon and Water Fluxes Using High-Resolution Remote Sensing
Earth’s terrestrial ecosystems are central regulators of the global climate system, mediating essential exchanges of carbon, water, and energy between the land and atmosphere. At the core of these dynamics lie two ... -
Spatio-temporal characteristics of precipitating clouds and rainfall over the Western Ghats of India
One of the heaviest rainfall receiving regions during the Indian summer monsoon season is anchored around the orographic barriers of the Western Ghats (WG) in peninsular India. The high rainfall is attributed to the forced ... -
Elucidation and prediction of ion transport in battery materials: A first-principles and machine learning study
Facile ionic mobility within host frameworks is crucial to the design of high-energy-density batteries with high-power-densities, where the activation energy required for ion migration (Em) between crystallographic sites ... -
Studies on flow past pipe disturbances with Hagen Poiseuille approach flow
The problem of flow past disturbances in circular pipes has wide engineering applications. Most available information pertains to turbulent approach flow. In this thesis, the effects of disturbances in circular pipes are ... -
Chracteristics of self-aerated flows
A characteristic of high-velocity open channel flows is the phenomenon of self-aeration, in which atmospheric air is entrained into and mixed with the flow, creating the appearance of white water. This phenomenon is ... -
Division of flow in open channels
This thesis deals with the problem of division of flow when a branch channel bifurcates from a main channel. The effects of both the angle of off-take and the relative widths of the main and branch channels are considered. In ... -
Separation control in diverging channels
The work presented herein consists of the separation control methods to minimize losses and recover as much velocity head as possible after the divergence in a straight-walled diverging channel in the subcritical flow ... -
Inception of cavitation
Cavitation due to flow separation may occur at pressures higher than the vapor pressure (e.g., where PwP_wPw? is the measured pressure in the cavity and PvP_vPv? is the vapor pressure at the corresponding temperature). The ... -
Characteristics, correlations similarities and prediction of erosion due to cavitation and liquid impingment, Ph.D. Thesis
Erosion due to cavitation and liquid impingement is a common type of wear that occurs in a variety of engineering equipment, structures, and devices, such as: Hydro turbines Pumps Steam turbine blades Diesel engine cylinder ... -
Finite difference modelling of ground water flows
The thesis presents several studies on finite difference modelling of groundwater flow systems. The studies include: (i) Development of an efficient computational algorithm for nonrectangular flow domains; (ii) Comparative ... -
Flow characteristics of rectangular and trapezoidal finite crest... ..weirs
This thesis presents an extensive and systematic study of the free and submerged flow characteristics of rectangular and trapezoidal finite crest width weirs and triangular profile weirs. Aspects studied include the ... -
Studies on characteristics of cavity and cavitation damage behind circular cylinders in water with a venturi
Cavitation is a complex hydrodynamic phenomenon involving the appearance, growth and collapse of vapour- and/or gas-filled bubbles. During the collapse phase, it generates forces sufficient to erode even the strongest ... -
Effect of particles on nonequilibrium relaxation phenomena in high temperature gas-nozzle flows
This thesis presents an exhaustive study of the effects of solid particles on the relaxation phenomena of various nonequilibrium processes, such as vibrational, dissociation and ionization, of the gas phase at high temperature ... -
Experimental study of sudden expansion in pipe flow
An Experimental Study of Sudden Expansion in Pipe Flow Flow through a sudden expansion, though the simplest and perhaps the earliest problem of fluid flow separation, still leaves much to be understood. The sudden expansion ... -
Development and application of a new method for detection of structural equivalence in graphs
This thesis mainly concerns the isomorphism problem encountered in computerized structural synthesis of kinematic chains. The contributions of the thesis to the study of structural aspects of linkages are the following. 1. ...