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Hybird Central Solvers for Hyperbolic Conservation Laws
(2018-05-11)
The hyperbolic conservation laws model the phenomena of nonlinear waves including discontinuities. The coupled nonlinear equations representing such conservation laws may lead to discontinuous solutions even for smooth ...
A Ghost Fluid Method for Modelling Liquid Jet Atomization
(2018-05-21)
Liquid jet atomisation has a wide variety of application in areas such as injectors in automobile and launch vehicle combustors, spray painting, ink jet printing etc. Understanding physical mechanisms involved in the primary ...
Effect of a Mesh on Boundary Layer Transition Induced by Free-stream Turbulence and an Isolated Roughness Element
(2018-06-23)
A high level of free-stream turbulence and surface roughness are known to cause breakdown of an otherwise stable laminar flow. In transition induced by free-stream turbulence, streaks are formed due to the lift-up effect ...
Analysis of Unsteady Incompressible Potential Flow Over a Swimming Slender Fish and a Swept Wing Tail
(2018-05-16)
This thesis deals with computing the pressure distribution around a swimming slender fish
and the thrust generated by its flapping motion. The body of the fish is modeled as a missile like slender body to which a tail is ...
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 ...
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 ...
Shocks, Shock-Boundary Layer Interaction, And Transonic Flutter
(2017-09-27)
Transonic utter is an aeroelastic instability characterized by part-chord shocks over an airfoil and single mode oscillations leading to a drop in the utter boundary. We present a numerical study that examines the influence ...
Multi-Agent Positional Consensus Under Various Information Paradigms
(2017-02-22)
This thesis addresses the problem of positional consensus of multi-agent systems. A positional consensus is achieved when the agents converge to a point. Some applications of this class of problem is in mid-air refueling ...
Large Eddy Simulation of Free and Impinging Subsonic Jets and their Sound Fields
(2018-02-27)
Evaluating aerodynamic noise from aircraft engines is a design stage process, so that it conform to regulations at airports. Aerodynamic noise is also a principal source of structural vibration and internal noise in ...
Experimental and Computational Studies on Deflagration-to-Detonation Transition and its Effect on the Performance of PDE
(2018-02-26)
This thesis is concerned with experimental and computational studies on pulse detonation engine (PDE) that has been envisioned as a new concept engine. These engines use the high pressure generated by detonation wave for ...