Division of Mechanical Sciences: Recent submissions
Now showing items 1701-1720 of 1945
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Stability Of Double-Diffusive Finger Convection In A Non-Linear Time Varying Background State
(2010-09-06)Convection set up in a fluid due to the presence of two components of differing diffusivities is known as double diffusive convection. Double diffusive convection is observed in nature, in oceans, in the formation of certain ... -
Experiments On Natural Ventilation In A Room And Real Source-Sink Pairs
(2010-09-06)The present work consists of two parts: experimental study of natural ventilation in a model room and the flow associated with a source-sink pair. The first part describes the natural ventilation of a model room of size ... -
Reliability Based Design Methods Of Pile Foundations Under Static And Seismic Loads
(2010-09-03)The properties of natural soil are inherently variable and influence design decisions in geotechnical engineering. Apart from the inherent variability of the soil, the variability may arise due to measurement of soil ... -
Numerical Simulations Of Void Growth In Ductile Single Crystals
(2010-09-03)The failure mechanism in ductile materials involves void nucleation, their growth and subsequent coalescence to form the fracture surface. The voids are generated due to fracture or debonding of second phase particles or ... -
The Changing Nature Of Rainfall Annual Cycle And The Propagation Characteristics Of The Intraseasonal Oscillations In Flood And Drought Years Of The Indian Monsoon
(2010-08-30)Using a 50-year (1951-2000) gridded (1-degree) daily rainfall data set over the Indian land region, we study two main aspects of the Indian monsoon. The first aspect deals with the changing nature of the rainfall annual ... -
Measurements And Modelling Of Internal Waves In The Northeastern Arabian Sea
(2010-08-30)Internal waves (IWs) owe their existence to the stratification in the medium. These waves affect acoustic transmission greatly. Impact of these waves on acoustic transmission in deep water is fairly well understood due ... -
Uncertainty Modeling For River Water Quality Control
(2010-08-30)Waste Load Allocation (WLA) in rivers refers to the determination of required pollutant fractional removal levels at a set of point sources of pollution to ensure that water quality standards are maintained throughout the ... -
Development Of Methods For Structural Reliability Analysis Using Design And Analysis Of Computer Experiments And Data Based Extreme Value Analysis
(2010-08-26)The work reported in this thesis is in the area of computational modeling of reliability of engineering structures. The emphasis of the study is on developing methods that are suitable for analysis of large-scale structures ... -
Role Of Solid Phase Movement And Remelting On Macrosegregation And Microstructure Formation In Solidificaiton Processing
(2010-08-25)Melt convection and solid phase movement play an important role in solidification processes, which significantly influence the formation of grain structures and solute segregations. In general, the melt convection and grain ... -
Processing Of Zirconia Based Honeycombs And Evaluation Of Thermo Mechanical Properties
(2010-08-16)Ceramic cellular solids, mainly honeycombs and foams, are a novel class of composite materials where one phase is an interconnected network of solid struts or plates and the other one an empty phase or possibly a fluid. ... -
Semi-active Control Of Earthquake Induced Vibrations In Structures Using MR Dampers : Algorithm Development, Experimental Verification And Benchmark Applications
(2010-08-16)As Civil Engineering structures, e.g., tall buildings, long span bridges, deep water offshore platforms, nuclear power plants, etc., have become more costly, complex and serve more critical functions, the consequences of ... -
Topology Optimization Of Composite Heat-Sinks Involving Phase-Change Material
(2010-08-16)The principal goal of this thesis is to develop a systematic method for the design of composite heat sinks (CHSs) that serve as passive and transient cooling devices for microelectronics. This is accomplished by posing the ... -
Sedimentation Of Heavy Particles In Turbulence
(2010-08-06)Behavior of particles in buoyancy driven turbulent flow at Ra ≈ 10º is investigated experimentally. The volume fraction of the particles is low enough for the inter particle influence to be neglected, the mass loading ... -
Modeling And Simulation Frameworks For Synthesis Of Nanoparticles
(2010-08-06)Nanoparticles are used in various applications like medical diagnostics, drug delivery, energy technology, electronics, catalysis etc. Although particles of such small dimensions can be synthesized through various methods, ... -
Multi-Agent Search Using Voronoi Partition
(2010-08-05)This thesis addresses a multi-agent search problem where several agents, equipped with sensors and communication devices, search an unknown area. Lack of information about the search space is modeled as an uncertainty ... -
Investigation Of Ramp/Cowl Shock Interaction Processes Near A Generic Scramjet Inlet At Hypersonic Mach Number
(2010-08-05)One of the major technological innovations that are necessary for faster and cheaper access-to-space will be the commercial realization of supersonic combustion jet engines (SCRAMJET). The establishment of the flow through ... -
First Principles Study Of Structure And Stacking Fault Energies In Some Metallic Systems
(2010-08-05)Plastic deformation in crystalline materials largely depends on the properties of dislocations, in particular their mobility. While continuum description of deformation of a crystalline metal can be made reasonably well ... -
Studies On The Evaluation Of Thermal Stress Intensity Factors For Bi-Material Interface Cracks
(2010-07-29)Components of turbines, combustion chambers, multi-layered electronic packaging structures and nuclear reactors are subjected to transient thermal loads during their service life. In the presence of a discontinuity like ... -
Laminar Conjugate Natural Convection And Surface Radiation In Horizontal Annuli
(2010-07-29)Numerical studies of two-dimensional laminar conjugate natural convection flow and heat transfer in horizontal annuli formed between inner heat generating solid cylinders and outer isothermal circular boundary are performed ... -
Numerical Study Of Laminar And Turbulent Mixed Convection In Enclosures With Heat Generating Components
(2010-07-29)The problem of laminar and turbulent conjugate mixed convection flow and heat transfer in shallow enclosures with a series of block-like heat generating components is studied numerically for a Reynolds number range of zero ...