Mechanical Engineering (ME): Recent submissions
Now showing items 1-20 of 443
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Interface capturing in multiphase flows using finite volume based level set method
An important class of problems involves a substance transforming from one phase to another with absorption or emission of energy. Such cases arise in many settings, of which melting, solidification, condensation, and ... -
The use of dual quaternions in rigid body motion interpolation and visualization
Dual quaternions are an excellent alternative tool to transformation matrices in the study of rigid body motion. They are known to represent the position and orientation of a rigid body in a concise and efficient manner, ... -
Constrained least squares finite element formulation of two-dimensional elastodynamic problems
In the present work, a least?squares finite element formulation for two?dimensional elastodynamic problems is developed. This development is based on an earlier formulation reported by Pratap. The earlier formulation was ... -
Rational approach to solid finite elements
The finite element method today has become a powerful tool in engineering analysis and design. The ease of application, reliability of solutions, and its ability to model complex geometries seem to be the main reasons for ... -
Electronic signal processing in laser doppler annemometry
The three commonly used electronic processors for laser Doppler anemometer systems are the spectrum analyser, the frequency tracking demodulator and the period timing device. Extensive analytical studies on spectrum analyser ... -
An Experimental Study On The Scale Effects In Cavitation Noise
Cavitation noise studies were made in a water tunnel with particular reference to scale effects. Travelling?bubble cavitation was artificially generated on four axisymmetric bodies of the Schiebe head?forms with varying ... -
Boundary layer transition with and without lateral divergence
Information on the transition processes in turbomachine boundary layers is important in computing schemes for predicting blockage, flow losses, separation, etc. Actual transition on turbomachine blades does not conform to ... -
Experimental study of endwall flow in a compressor cascade
Improvement in calculating methods for end?wall boundary layers of blade rows can only come about by a greater understanding of the physics of the flow from which realistic models can be built of the terms that go into ... -
Studies on viscosity of mixtures of freon-12 and freon 22 vapours
The viscosity of pure Freon?12 and Freon?22 vapours, and their mixtures, has been determined using an oscillating?disc viscometer at room temperature and pressure. The results agree well with the published data for the ... -
Studies on viscosity of mixtures of some freon vapours
An oscillating disc viscometer is used for the determination of viscosity of Freon?12, Freon?22 and Freon?114 vapours and their binary and ternary mixtures at room temperature and pressure. The viscosity of Freon?12, ... -
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 ... -
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 ... -
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, ... -
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 ... -
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 ... -
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 ...