Division of Mechanical Sciences: Recent submissions
Now showing items 101-120 of 1945
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Design and Development of Novel Quadcopters for Reliable Operations in Cluttered Environments
This thesis presents innovative designs and control strategies for enhancing the performance and reliability of quadcopters, particularly in demanding and cluttered environments. The primary contributions include the ... -
Adaptation and Characterization of Fossilized Hydrocarbon Gas Turbine Combustor for Operation with Green Fuel(s): Experimental and Numerical Investigation
Decarbonizing energy conversion systems necessitates the adaptation of conventional fossil-fuel-based systems, which have been designed and optimized over the past century for operation with fossilized hydrocarbons, to ... -
Contaminated Site Investigation and Remediation Using Modified Nano Zero Valent Iron Particles
Rapid industrialization has boosted economic growth but also increased contaminants in air, water, and soil. Improper disposal of municipal solid waste and industrial effluents has rendered many groundwater sources unfit ... -
Foaming of Surface Waterbodies: A Comprehensive Study on Causes, Persistence, Seasonality, and Mitigation Strategies
Foaming waterbodies have emerged as a significant global concern due to their adverse effects on aquatic ecosystems, offensive odour emissions, disruption of daily activities in nearby areas, and visual unpleasantness. ... -
Aeroacoustic Sources in Twin Turbulent Jets
An understanding of the aeroacoustics of twin turbulent jets is essential for applications involving noise reduction in dual engine aircrafts and launch vehicles. The aeroacoustic dynamics of these jets are influenced ... -
Late Cenozoic climate reconstruction from the Northern Indian Ocean using foraminiferal clumped isotope thermometry and stable isotope technique
The Late Cenozoic era (23.03 million years ago to the present) offers a critical time window to examine the role of greenhouse gases, notably CO2 (ranging between 910 ppm and 180 ppm), in the operation of Earth's system ... -
Thermochemical Conversion of Lignocellulosic Biomass to Generate Hydrogen Rich Synthesis Gas for Hydrogen Production: An Experimental and Thermodynamic Study Using Oxy-Steam as The Gasification Agent
Hydrogen can help decarbonize and bring a paradigm shift in the global energy mix. Green hydrogen, with its potential to mitigate carbon emission, offers an inexhaustible supply – free from the constraint of finite reserves. ... -
Monte Carlo Simulations With Novel Sampling Variance Reduction Schemes For Structural Reliability Estimation
The work reported in this thesis is in the area of computational structural reliability modelling. The primary focus of the study is on the estimation of structural reliability using Monte Carlo simulations with sampling ... -
On the nature of transonic buffet in a finite span wing
Transonic buffet, or self-sustained shock oscillations caused by shock boundary layer interactions, creates lift and drag fluctuation on the wing of an aircraft. This aerodynamic instability limits the flight envelope of ... -
Supporting Concept Representation, Synthesis, and Analysis of Multi-state Mechanical Devices
‘Design’ is a means of changing existing situations into preferred ones. The engineering design process has been broadly classified into four stages: task clarification, conceptual design, embodiment design and detail ... -
Modeling and Experimental Studies on Nucleation & Growth of Crystals Using Super-Cooled Liquids
Crystallization of active pharmaceutical ingredients (APIs) is a critical processing step in the pharmaceutical industry. It traditionally involves supercooling mother liquor in jacketed vessels to induce crystallization ... -
Modeling of Supercritical Carbon Dioxide Centrifugal Compressors for Brayton Power Cycles
Due to several perceived advantages, supercritical Carbon dioxide (sCO2) cycles are viewed as potential replacements for steam-based power generation. Their successful deployment depends on several factors - one important ... -
Asymptotic Modelling of Carbon Nanotube (CNT) and CNT-Reinforced Composite Structures Using Strain Gradient Formulations
Carbon nanotubes (CNTs) have garnered attention for their remarkable mechanical, thermal, and electrical properties, making them valuable in various applications. CNTs are particularly advantageous in aerospace structures ... -
Numerical Modeling of Sediment Transport using ANUGA Sed: Application to Mahanadi River Basin, India
Soil erosion and sediment transport are natural processes primarily driven by water. However, excessive human interference through agriculture, urbanization, and the construction of water storage reservoirs has significantly ... -
Predictive modelling of key performance indicators for a data-driven digital twin of CNC machining processes
This thesis introduces a novel Digital Twin architecture for modelling CNC machining processes for better decision-making by predicting key performance indicators (KPIs) with data-driven modelling. The proposed data-driven ... -
Deformation-based Topological Lattices and their Edge States
Topological elastic metamaterials (TEMs) represent a novel class of elastic materials known for their unique ability to localize vibration energy at boundaries, maintaining robustness against system disorders. These ... -
Comparison of On-Orbit Manual Attitude Control Methods for Non-Docking Spacecraft Through Virtual Reality Simulation
On-orbit manual attitude control of manned spacecraft is accomplished using external visual references and some method of three axis attitude control. All past, present, and developmental spacecraft feature the capability ... -
Engineering Interpenetrating Polymeric Network (IPN) Membranes for Effective Water Remediation
Water is fundamental to human life, sustaining ecosystems, supporting livelihoods, and underpinning human well-being. Despite its importance, water scarcity is a growing global issue due to population growth, economic ... -
Non-intrusive reduced order modeling of dynamical systems with large stochastic dimensions
The work done in this thesis falls under the broad category of computational mechanics. This thesis addresses the computational challenge of high-dimensional regression and interpolation within the framework of a proper ... -
Dynamically isotropic Gough-Stewart platform for micro-vibration isolation in spacecraft
Rotating components such as reaction wheels and momentum wheels on spacecraft generate micro-vibrations up to 250 Hz during on-orbit operations. While the use of Gough-Stewart Platforms (GSPs) for six degrees of freedom ...