Division of Mechanical Sciences: Recent submissions
Now showing items 141-160 of 2144
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Energy dissipation and other studies on submerged circular twin jets
When a high velocity sutmerged water jet enters a quiescent amhient medium of the same fluid Its energy gets gradually dissipated along Its course In the surrounding medium and Its efflux velocity gets decelarated along ... -
Some aspects of cavitation phenomena in centrifugal pumps
The work reported in this thesis has a fourfold objective, namely, to study: The influence of Froude number on the inception of cavitation in radial flow pumps. The influence of prerotation on the cavitation performance ... -
Effect of pre-rotation on cavitation in centrifugal and mixed flow pumps.
It has been theoretically shown that introduction of prerotation at the impeller inlet at design point improves the cavitation performance. A qualitative assessment of this from existing data on centrifugal pump impellers ... -
Dissipation of energy of a circular jet submerged in water
This thesis deals with the study of the dissipation of energy of a high-velocity jet flowing into a standing mass of water. At the instant when the jet enters the standing pool of water, the jet possesses the maximum energy ... -
Effect of viscocity and surface tension on the taylor instability of the surface of a cavitation bubble
This thesis is devoted to a consideration of the following problem: A spherical mass of fluid of density ??, viscosity ?? and external radius R is surrounded by a fluid of density ?? and viscosity ??. The fluids are ... -
Unsteady two-Dimensional flow field behind perforated plates on a flat surface
The flow over bluff bodies with separation is one of the oldest in fluid mechanics. The separated flows would be considered to have local streamline curvature; such flows are particularly of interest in engineering due to ... -
Steady two-dimensional seepage flow analysis analytical and numerical methods
The primary aim of the present work is to study the influence of sloping boundaries with discontinuities in slopes and the effect of surfaces of seepage on seepage characteristics in case of confined and unconfined flows ... -
Entertainment co-efficient surface jet
The thesis presents the results of an experimental study on the entrainment coefficient of a circular non-buoyant surface water jet discharging into quiescent ambient water. The thesis consists of seven chapters. Chapter ... -
Linear stability analysis of fluid flow adjacent to a flexible surface
Fluid flow adjacent to a flexible surface is often encountered in biological systems and bio-technological processes. These flows have been analyzed using models similar to those for the flow past a rigid surface, but the ... -
Studies of instabilities in particulate suspensions
The focus of this project is to study the dynamics of particulate suspensions. This study is divided into two parts. Part one focuses on the dynamics of self-propelled particles, such as microorganisms. The dynamics of ... -
Nurbs-Based Mesh-Free and Finite Element Methods in Computational Mechanics
A family of new mesh-free and mesh-based methods is developed and explored in the context of linear and nonlinear boundary and initial value problems of typical interest in engineering mechanics. A common feature in these ... -
Phase transitions of fluids confined in nanopores
Confined nanoscale fluids occur in many technologically important phenomenon such as boundary lubrication, adsorption, adhesion and catalysis. Fluids confined at these length scales are spatially inhomogeneous and fluid ... -
Frictional-kinetic models for steady cohesionless granular flow through a wedge-shaped hopper
The present work attempts to combine a newly developed kinetic constitutive theory with an older frictional theory to model.the two-dimensional gravity flow of a cohesionless granular material such as sand through a ... -
Similar solutions in nonequilibrium nozzle flows
The phenomena of thermal and/or chemical nonequilibrium in flowing gases at high temperatures is of fundamental importance in rocket nozzles as well as hypersonic flight simulation facilities. The present state-of-the-art ... -
Bursting phenomenon in turbulent flows
The importance of the phenomenon of bursts in turbulent shear layers has been recognised by fluid dynamicists during the past few years. Kline et al. (1967), Corino & Brodkey (1969), and more recently Grass (1971) noticed ... -
Lifted laminar diffusion flames-experiments and analysis.
Experiments on axisymmetric and two-dimensional lifted laminar diffusion flames have been conducted to obtain the height of lift as a function of flow parameters. The results are correlated on the basis of simple dimensional ... -
Role of subsurface flows in the ignition of liquid fuel pools-a theoretical study
The work is a theoretical study on the ignition of a pool of liquid fuel at subflash temperatures under the action of localized ignition sources. While a few experimental results are available in the literature, no theoretical ... -
Parametric analysis of fully developed turbulent Wall jets
From an examination of all available data on wall jets, it is concluded that at distances sufficiently far downstream from the slot, a fully developed state of the flow can be identified, where the details of the initial ... -
Modulation of Metal Fluxes and their Isotope Ratios in the Ganga (Hooghly) Estuary
This thesis aims at constraining the impact of estuarine processes on the net riverine fluxes of select metals and their isotopic composition to seawater. I studied the Ganga (Hooghly) River estuary, a monsoon-dominated ... -
Robust and Accurate Kinetic Schemes based on Flexible Velocities for Compressible Flows
Kinetic theory based schemes offer a unique approach to numerically solving the hyperbolic nonlinear Euler equations. These methods start with the Boltzmann equation as the governing equation at the kinetic level and then ...