Aerospace Engineering (AE): Recent submissions
Now showing items 201-220 of 419
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Inverse Problems in Free Vibration Analysis of Rotating and Non-Rotating Beams and its Application to Random Eigenvalue Characterization
(2018-02-19)Rotating and non-rotating beams are widely used to model important engineering struc-tures. Hence, the vibration analyses of these beams are an important problem from a structural dynamics point of view. Depending on the ... -
On Three Dimensional High Lift Flow Computations
(2018-02-18)Computing 3D high lift flows has been a challenge to the CFD community because of three important reasons: complex physics, complex geometries and large computational requirements. In the recent years, considerable progress ... -
A Study of the Characteristics of Gas-On-Liquid Impinging Injectors
(2018-02-18)The work presented here pertains to investigations on gas-on-liquid type of impinging injectors with a generic approach with prospective applications in several areas, and at places with particular emphasis on cryogenic ... -
Flutter Susceptibility Assessment of Airplanes in Sub-critical Regime using Ameliorated Flutter Margin and Neural Network Based Methods
(2018-02-17)As flight flutter testing on an airplane progresses to high dynamic pressures and high Mach number region, it becomes very difficult for engineers to predict the level of the remaining stability in a flutter-prone mode and ... -
Molecular Simulation of Anisotropic Stress and Structure in polymers
(2018-02-15)This dissertation presents a numerical study using molecular dynamic simulations that interrogates the polymer structure as it is strained continuously in time and correlates it with the stress developed in it. We investigate ... -
Microgravity Flow Transients in the Context of On-Board Propellant Gauging
(2018-02-15)It is well known that surface tension of a liquid has a decisive role in flow dynamics and the eventual equilibrium state, especially in confined flows under low gravity conditions and also in free surface flows. One such ... -
Cyclic Pursuit : Variants and Applications
(2018-02-11)The classical n-bugs problem has attracted considerable attention from researchers. This problem stems from the study of movement of a group of animals. In the context of multi- agent systems the problem has been modelled ... -
Ultrasonic Guided Wave Based Models, Devices and Methods for Integrated Structural Health Monitoring
(2018-01-31)Structural Health Monitoring (SHM) systems for future structures and vehicles would involve a process of damage identification and prediction of certain quantities of interest that concerns the function and safety. This ... -
Turbulence Modeling for Predicting Flow Separation in Rocket Nozzles
(2018-01-30)Convergent-Divergent (C-D) nozzles are used in rocket engines to produce thrust as a reaction to the acceleration of hot combustion chamber gases in the opposite direction. To maximize the engine performance at high ... -
Design and Development of Piezoelectric Stack Actuated Trailing Edge Flap for Helicopter Vibration Reduction
(2018-01-09)This research investigates on-blade partial span active plain trailing edge flaps (TEFs)with an aim to alleviate the helicopter vibrations. Among all the available smart materials, piezoelectric stack actuator(PEA)has shown ... -
Studies on Vortex Breakdown in a Closed Cylinder with a Rotating Endwall
(2018-01-09)Swirling flows abound in nature and numerous engineering applications. Under conditions which are not completely understood, the swirling cores could undergo a sudden enlargement of their vortex core, leading to a ’vortex ... -
Modeling and Simulation of Biomolecular Flow in Microchannel
(2018-01-01)Microfluidics deals with the behavior, control and manipulation of fluids which are confined at micrometer length scale. It has important application in lab-on-a chip technology, micro-propulsion, additive manufacturing, ... -
Experimental Studies on Shock-Shock Interactions in Hypersonic Shock Tunnels
(2017-12-16)Shock-shock interactions are among the most basic gas-dynamic problem, and are almost unavoidable in any high speed light, where shock waves generating from different sources crosses each other paths. These interactions ... -
Guidance Laws for Engagement Time Control
(2017-12-16)Autonomous aerial vehicles like missiles and unmanned aerial vehicles (UAVs) have attracted various military and civilian applications. The primary guidance objective of any autonomous vehicle is to reach the desired ... -
Wave Transmission Characteristics in Honeycomb Sandwich Structures using the Spectral Finite Element Method
(2017-12-12)Wave propagation is a phenomenon resulting from high transient loadings where the duration of the load is in µ seconds range. In aerospace and space craft industries it is important to gain knowledge about the high frequency ... -
Delamination Modeling and Detection in Composite Structures
(2017-12-12)Composite laminated structures are prone to delamination. Rotorcraft flexbeams, apart from many other aerospace primary load carrying members are made up of composite laminated structures. A delaminated primary load carrying ... -
Study of Non-Equilibrium Flow Behind Normal Shock
(2017-12-10)Normal shock problems in high enthalpy flows are of special interests to aerodynamicists and fluid dynamicists. When the shock Mach number become hypersonic and increasing further, the gas passing through the shock is ... -
Wing in Ground Effect
(2017-12-01)The thesis presents a two pronged approach for predicting aerodynamics of air- foils/wings in the vicinity of the ground. The first approach is effectively a model for ground effect studies, employing an inexpensive Discrete ... -
Atomization Characteristics of Camelina and Jatropha-Derived Drop-in Aviation Biofuels
(2017-11-22)Biofuels in civil aviation is actively studied in recent years to identify potential alternative jet fuels to meet stringent environmental regulations imposed to tackle degraded air quality caused by fossil fuel combustion. ... -
Mixing Enhancement Studies on Supersonic Elliptic Sharp Tipped Shallow (ESTS) Lobed Nozzles
(2017-11-22)Rapid mixing and spreading of supersonic jets are two important characteristics in supersonic ejectors, noise reduction in jets and fuel mixing in supersonic combustion. It helps in changing the acoustic and thermal signature ...