Division of Mechanical Sciences
Recent Submissions
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Transition in flexible tubes and channels
A combination of experiments, flow simulations and linear stability analysis is used to develop a fundamental understanding of the instability and transition in flows through flexible tubes and channels. The present study ... -
Estimation of thermophysical properties of organic liquids: diffusion coefficients and excess volumes.
The objective of this work is to experimentally determine the thermophysical properties such as diffusion coefficients and excess volumes of mixing of some organic liquids, specifically of binary systems involving the ... -
Dehydration of alcohols
Catalytic vapor phase dehydration of i-propanol, n-butanol, i-butanol, s-butanol and t-butanol is studied in a fixed bed flow reactor under isothermal conditions over various catalysts to understand the influence of catalyst ... -
Oxidation of Alcohols
Oxidation of ethanol and methanol are known to be feasible reactions. Equilibrium constants calculated show that these reactions are highly irreversible. Theoretically ethanol and methanol oxidations to their respective ... -
Modeling of Coalescence Cascades in Liquid-Liquid dispersions
Agitated dispersions of one liquid in another immiscible liquid invert at a critical value of dispersed phase fraction, nearly catastrophically. The dispersed phase becomes continuous and vice versa. This phenomenon has ... -
Polysterene-based compatibilizers for polymer blending : main chain epoxidation of high molecular weight polystyrene
Polystyrene has often been functionalized for its use in various commercial applications, but most often the reactive functional groups have been substituted on its benzene ring. In the present work, epoxy functional groups ... -
Studies in gas-solid reactions
Non-catalytic gas-solid reactions are of great industrial importance and have therefore attracted considerable research effort. As a result, a number of models have been proposed in literature. Among the early models, the ... -
Predictability of tropical coupled ocean-atmosphere model and its dependence on initial conditions
El Niño and Southern Oscillation (ENSO) is the dominant interannual signal in the tropics. This aperiodic phenomenon arises out of strong interactions between the tropical ocean and the atmosphere. Investigations with ... -
Bay of Bengal freshwater in the tropical Indian Ocean
The annual total continental runoff into the Bay of Bengal (BoB) is more than half the runoff into the entire tropical Indian Ocean. The net freshwater (FW) content in the Bay of Bengal mixed layer increases from a minimum ... -
Andaman sea circulation in a high-resolution OGCM
The objective of this study is to understand the circulation of the Andaman Sea, which is unique by geography and oceanography, using a high-resolution Ocean General Circulation Model (ROMS) in tandem with altimeter and ... -
Investigation on the linkage between mystery of excess atmospheric absorption and state of mixing of aerosols
In order to understand the response of the Earth–atmosphere system to anthropogenic aerosol forcing, it’s essential to know the relative impact of the various aerosol species on the radiation budget. Most of the models ... -
Numerical methods for non-homogeneous hyperbolic conservation laws
The numerical simulation of hyperbolic conservation equations has reached a level of maturity with the development of several efficient numerical methods in the past three decades. The same level of success is not present ... -
Some numerical studies on the airflow over mountains
A study of ‘Airflow over Mountains’ is carried out using a two-dimensional, stratified, time-dependent, nonlinear numerical model. Numerical experiments are conducted for high Froude numbers (Fr > 1) and low Froude numbers ... -
Application of least squares kinetic upwind method to strongly rotating viscous flows
The Least Squares Kinetic Upwind Method (LSKUM) is a node-based method. Ghosh and Deshpande, as well as Ramesh & Deshpande, have demonstrated that LSKUM works on any type of grid—structured, unstructured, Cartesian, Chimera, ... -
Mechanism of reversion in highly accerlerated turbulent boundary layers
This thesis consists of two related parts which are complementary to each other but can also be read independently. The first part is a study of the development of both the mean and fluctuating flow quantities in an initially ... -
Advanced Thermomechanical Modeling of Soft Matter Systems
This thesis deals with advanced thermomechanical modeling of complex soft matter systems, including polymers, gels, and biological tissues. It addresses a few fundamental limitations of classical theories, such as the ... -
An Information Visualization Support for Practitioner-Like Interpretation OF Life Cycle Assessment Results
Life Cycle Assessment (LCA) is widely used to quantify the environmental impacts of products and systems, yet its effective application in design practice remains limited due to challenges in interpreting complex, ... -
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 ...
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