Browsing Department of Materials Science and Metallurgy by Title
Now showing items 41-60 of 648
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An experimental and theoretical study of the dynamics of grounding lines
(Cambridge University Press, 2013-07-01)We present an experimental and theoretical study of a thin, viscous fluid layer that flows radially under gravity from a point source into a denser inviscid fluid layer of uniform depth above a rigid horizontal surface. ...
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An experimental study of the spread of buoyant water into a rotating environment
(University of CambridgeDepartment of Applied Maths and Theoretical PhysicsQueens', 2017-05-01)This thesis examines previously unresolved issues regarding the fluid dynamics of the spread of buoyant water into a rotating environment. We focus in particular on the role that finite potential vorticity and background ...
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An Iterative Wiener--Hopf method for triangular matrix functions with exponential factors
This paper introduces a new method for constructing approximate solutions to a class of Wiener{Hopf equations. This is particularly useful since exact solutions of this class of Wiener{Hopf equations, at the moment, cannot ...
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Analytic and Numerical aspects of isospectral flows
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics (DAMTP)Wolfson College, 2018-01-15)In this thesis we address the analytic and numerical aspects of isospectral flows. Such flows occur in mathematical physics and numerical linear algebra. Their main structural feature is to retain the eigenvalues in the ...
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Analytic properties of transition amplitudes
(University of CambridgePalmer Physical Laboratory, Princeton University, 1962-12-07)
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Analytic solutions for reduced leading-edge noise aerofoils
(American Institute of Aeronautics and Astronautics2018 AIAA/CEAS Aeroacoustics Conference, 2018-01-01)This paper presents an analytic solution for the sound generated by an unsteady gust interacting with a semi-infinite flat plate with a piecewise linear periodic leading edge. The Wiener-Hopf method is used in conjunction ...
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Analytical and experimental investigation into the effects of leading-edge radius on gust-aerofoil interaction noise
(Cambridge University PressJournal of Fluid Mechanics, 2017-10-25)This paper investigates the effects of local leading-edge geometry on unsteady aerofoil interaction noise. Analytical results are obtained by extending previous work for parabolic leading edges to leading edges of the form ...
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Analytical solutions to slender-ribbon theory
(Physical Review Fluids, 2017-08-01)
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Anatomy of the ATLAS diboson anomaly
(2015-08-19)We perform a general analysis of new physics interpretations of the recent ATLAS diboson excesses over Standard Model expectations in LHC Run I collisions. Firstly, we estimate a likelihood function in terms of the truth ...
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Anti-de Sitter Particles and Manifest (Super)Isometries.
(American Physical SocietyPhysical Review Letters, 2017-04-07)Starting from the classical action for a spin-zero particle in a D-dimensional anti-de Sitter (AdS) spacetime, we recover the Breitenlohner-Freedman bound by quantization. For D=4, 5, 7 and using an Sl(2;K) spinor notation ...
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Anti-self-dual fields and manifolds
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2013-04-30)In this thesis we study anti–self–duality equations in four and eight dimensions on manifolds of special Riemannian holonomy, among these hyper–Kähler, Quaternion–Kähler and Spin(7)–manifolds. We first consider the ...
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Applications of Numerical Relativity Beyond Astrophysics
(Department of Applied Mathematics and Theoretical Physics, University of CambridgeUniversity of CambridgeDepartment of Applied Mathematics and Theoretical PhysicsEmmanuel College, 2017)Numerical relativity has proven to be a successful and robust tool for non-perturbative studies of gravitational phenomena in the highly dynamical and/or non-linear regime. Perhaps the most prominent achievement in the ...
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Arbitrary axisymmetric steady streaming: Flow, force and propulsion
(SpringerJournal of Engineering Mathematics, 2016)A well-developed method to induce mixing on microscopic scales is to exploit flows generated by steady streaming. Steady streaming is a classical fluid dynamics phenomenon whereby a time-periodic forcing in the bulk or ...
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Arctic Sea Ice Loss in Different Regions Leads to Contrasting Northern Hemisphere Impacts
(Wiley-BlackwellGeophysical Research Letters, 2018-01-28)To explore the mechanisms linking Arctic sea-ice loss to changes in mid-latitude surface temperatures, we conduct idealized modeling experiments using an intermediate general circulation model and with sea-ice loss confined ...
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Are there testable discrete Poincaré invariant physical theories?
(IOP PublishingClassical and Quantum Gravity, 2018-09-05)In a model of physics taking place on a discrete set of points that approximates Minkowski space, one might perhaps expect there to be an empirically identifiable preferred frame. However, the work of Dowker et al (2004 ...
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Artificial Micro-Devices: Armoured Microbubbles and a Magnetically Driven Cilium
(University of CambridgeDAMTPQueens', 2017-10-01)Micro-devices are developed for uses in targeted drug delivery and microscale manipulation. Here we numerically and analytically study two promising devices in early stages of development. Firstly, we study Armoured ...
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Aspects of fluid dynamics and the fluid/gravity correspondence
(University of CambridgeDAMTPTrinity, 2017-09-01)This thesis considers various extensions to the fluid/gravity correspondence as well as problems fundamental to the study of fluid dynamics. The fluid/gravity correspondence is a map between the solutions of the Navier-Stokes ...