Division of Mechanical Sciences: Recent submissions
Now showing items 101-120 of 1940
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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 ... -
Analysis, Modelling, and Optimization of Gate-To-Gate Aircraft Operation for Enhanced Air Traffic Management
The global air passenger demand will surpass the 10 billion mark by the end of 2040. India itself is poised to become the third largest aviation market and traffic generator by 2033, with a forecast of over 950 million ... -
Emergence and Propagation of Aerodynamic Instabilities in Centrifugal Compressors with Vaned Diffusers: Effect of Solidity and Stagger
Centrifugal compressors are widely employed in turbochargers and small gas turbines due to their ability to achieve high compression per stage. These compressors consist of a rotating impeller and a static diffuser, which ... -
On structure preserving numerical schemes for hyperbolic partial differential equations and multiscale kinetic equations
Natural phenomena are frequently represented through the formulation of differential equations, coupled with specific initial and boundary conditions. Many such models possess inherent structures that are crucial in ... -
Developing Decision Support for Electric Vehicle (EV) Adoption & Charging Infrastructure Planning
Majorly reliant on petroleum products, the transportation sector accounts for 25% of the global energy demand and 23% of carbon dioxide emissions. Among all the modes of transportation, road vehicles are the primary sources ... -
Developing SCR Plate Catalysts for Sustainable NOx Reduction in High Dust Thermal Power Plants
The primary aim of this research is to address NOx emission reductions from high ash/dust environments of coal-driven thermal power plants prevalent in India and other regions using low-grade coal with significant fly ash ...