Aerospace Engineering (AE): Recent submissions
Now showing items 101-120 of 419
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Adaptive Filtering for Large Eddy Simulation of Flows with Shocks and its Application to Launch Pad Deflectors
During lift-off of launch vehicles jets from nozzles impinge on a wedge deflector which directs the jet away from the rocket along passages. As a high Reynolds number turbulent flow the whole region has a broad spectrum ... -
Propagation characteristics in elastic waveguide with discrete nonlinearity
Wave propagation in elastic continuum is a subject of interest in many fields of engineering and has been explored for several decades from theoretical, computational and experimental perspective. In this context, a ... -
Experimental Investigation of Fuel Drop Impact on Unheated and Heated Solid
The modelling of spray-wall interaction encountered in engine combustors relies heavily on studies of single drop impact on heated solid surfaces. In the present thesis, the impact of a single fuel drop on a hot, smooth ... -
Analysis of Kinematic Constraints in Fixed-Wing UAV Formation Flying
Rise in autonomy has led to increase in usage of Unmanned Aerial Vehicles (UAVs) for various applications and has allowed the UAVs to perform complex and hazardous missions with ease. Formation of multiple UAVs finds ... -
Structural Health Monitoring with Laser Doppler Imaging of Ultrasonic Guided Waves
This thesis deals with ultrasonic guided wave based non-destructive inspection and health monitoring of aircraft structural components using a non-contact sensing scheme based on laser Doppler scanning imaging technique. ... -
Novel, Robust and Accurate Central Solvers for Real, Dense and Multicomponent Gases
The nonlinear convection terms in the governing equations of inviscid compressible fluid flows are nontrivial for modelling and numerical simulation. The traditional Riemann solvers, which are strongly dependent on the ... -
Turbulence-Premixed Flame Interactions
The interaction between premixed flames and turbulence is an inherently non-linear phenomenon. Understanding such interactions has profound practical implications towards the development of better combustion devices and ... -
Co-operative Destabilization of a Flat Plate Boundary Layer by a Free Stream Convecting Vortex and Wall Suction/Blowing
The stability of wall bounded shear layer at subcritical Reynolds number disturbed by a freestream convecting vortex and unsteady suction/blowing at the wall was studied. A counterclockwise line vortex was convected parallel ... -
Characterization of high enthalpy flows in the IISc free-piston driven shock tunnel using Two-Colour Ratio Pyrometry
High temperature and its associated effects set the hypersonic flow regime apart from other class of flows. Viscous dissipation raises the internal energy of the high-kinetic-energy gas as it slows down in the boundary ... -
Dynamics of Actuated and Interacting Swirl Premixed Flames in Model Gas Turbine Combustors
Lean premixed combustion is preferred in gas turbines because of the reduced (NOx) emissions. However, the combustors operating in lean premixed regime could suffer from problems like flame flashback, flame blowoff and ... -
Evaluation of Hygrothermal Ageing In Cfrp Composite Material: A Study Using Non-destructive Techniques
Advanced composite materials are replacing conventional metals/alloys in aerospace industries due to their excellent strength and stiffness-to-density ratio as well as some other better physical and mechanical properties ... -
Numerical solution of non-classical beam and plate theories using di erential quadrature method
For effcient design of the nano/micro scale structural systems, detailed analysis and through understanding of size-dependent mechanical behaviour at nano/micro scale is very critical. Various approaches have been used ... -
Optimal Numerical Integration Method for Higher Order Polygonal Finite Elements and its application in microstructure modeling
In conventional Finite Element Method (FEM), triangular and quadrilateral elements are commonly used finite elements and their counterparts with tetrahedral and hexahedral elements in three-dimensions to discretize the ... -
Spectral Methods for different classes of Partial Differential Equations
The thesis touches numerical solutions and wave propagation analysis using spectral methods for different classes of partial differential equations (PDEs) having applications in various fields. We address the solution of ... -
Design of Planar Supersonic Wind Tunnel Nozzle
This thesis revisits the design of a planar supersonic nozzle for a supersonic wind tunnel using the method of characteristics (MOC) and Computational Fluid Dynamics (CFD). While design of a converging-diverging (CD) ... -
Interaction behavior and droplet characteristics of multi-injector sprays
The injector faceplate of a liquid propellant rocket engine is comprised of numerous single-element atomizers to inject propellants into the engine thrust chamber. The sprays from these single-element atomizers interact ... -
Lattice Boltzmann Relaxation Schemes for High Speed Flows
The lattice Boltzmann method (LBM) has emerged as a highly efficient model for the simulation of incompressible flows in the last few decades. Its extension to compressible flows is hindered by the fact that the ... -
The Role of Self-Recirculating Casing Treatment on Axial Compressor and Its Aeroelastic Behavior
The modern-day axial compressor stages in a gas turbine engine play a vital role in generating the high-pressure ratios by operating at the limits of their design. Aerodynamic instabilities such as rotating stall and surge ... -
Experimental and Numerical Studies to Strengthen the Adhesive Bonded Single Lap Joint
In this work, an attempt has been made to strengthen the adhesive bonding using various concepts like hybrid joints, dual and mixed adhesive bonded joints. One of the most commonly occurrence of defect in adhesive bonded ... -
Constrained Adaptive Control of Nonlinear Systems with Application to Hypersonic Vehicles
Constraints in input, output, and states are evident in most of the practical systems. Explicitly incorporating these constraints into the control design process leads to its superior performance in general. Therefore, ...