Mechanical Engineering (ME): Recent submissions
Now showing items 1-20 of 433
-
Effect of flexible exit on vortex-pair generation
In the present work, we study experimentally the effect of flexible exit on vortex?pair generation. Vortex rings are frequently observed flow phenomena and have often been associated with unsteady starting jets issuing out ... -
Laminar buoyancy - induced flows and transport processes in stratified media
Buoyancy?induced flows in a density?stratified environment occur in a wide variety of engineering systems and in nature. Some of these are crystal growth processes, solar ponds, deep ocean power modules, environmental ... -
Transient vibrations of one and two degree of freedon non-linear systems
This thesis is devoted to the study of transient vibrations of non-linear systems, with emphasis on two degree?of?freedom systems. After a résumé of the free and forced response of non-linear two degree?of?freedom systems, ... -
Studies on sonoluminescence in the form of resonance radiation
Recent studies have shown that measured flash width from single and multibubble sonoluminescence are in the subnanosecond or even picosecond regime. Here we provide conclusive experimental evidence for the existence of ... -
Dynamic viscosity of gas mixtures
An oscillating disc viscometer was designed and calibrated for the determination of viscosity of gases and gas mixtures at room temperature and pressure. The viscosity of oxygen, carbon dioxide and air were determined at ... -
studies on silica and zircon sands bonded with silicate - ester systems
Introduction Cold-set processes have revolutionized mould and core-making techniques and have led to a reduced need for skilled labour. Chemical binders have made steady progress in the production of moulds and cores for ... -
Design of Structures and Mechanisms using Topological Derivatives and Exploration of 4D-printed Shape Morphing Structures
We employ topological derivatives to design supports for stiff structures and compliant mechanisms along with exploration of design features for 4D-printed shape-morphing structures. Topological derivative (TD) has been ... -
Coupled vibro-acoustics of an unbaffled plate
In this work, that falls largely in the realm of applied mathematics, we consider a fluid-loaded finite simply-supported rectangular unbaffled plate with the following objectives: a) to derive a closed form mathematical ... -
A Systems approach for utility assessment of Energy resources in rural Applications
The main objective of the thesis is to develop a systems approach to assess the utilities of alternative energy resources in the context of rural India. The methodology proposed includes those energy resources also which ... -
Radiative interactions in boundary layers
The flow of a compressible, viscous, heat-conducting, radiating gray gas parallel to a gray semi-infinite flat plate is considered. The radiation field is described by using the differential approximation. N, the ratio of ... -
Development of Specialised Tribometer for Advanced Tribosystem Evaluation
This thesis presents a comprehensive study on the development and validation of force-controlled tribometers to accurately evaluate tribo-contacts under realistic test conditions. The research addresses the gap in conventional ... -
Passive Interfacial Evaporation-based Thermal Desalination Systems
Desalination offers a promising solution to the global water shortage by utilizing the vast resource of seawater. With 26% of the world’s population lacking access to potable water currently, there is a growing need to ... -
Electrohydrodynamics of a Viscoelastic Drop
The behavior of a drop in electric fields is critical for diverse natural and industrial applications, including inkjet printing and electrohydrodynamic atomization. This complex phenomenon is governed by the balance of ... -
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 ... -
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 ... -
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. ... -
Holographic interferometric study of natural convective heat transfer in vertical rectangular enclosures
Natural convective flows, induced by buoyancy forces on the fluid, in rectangular enclosures are important in many engineering applications such as thermal insulation of buildings, double-glazed windows and in flat plate ... -
Numerical studies of some non-linear problems in fluid mechanics
The problem of flow around a circular cylinder has long attracted the attention of many research workers because of its many practical applications and exciting mathematical features. This thesis contains the results of ...