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The impact and rupture of a water-filled balloon on a rigid surface
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-06-10)
The dropping of a water-filled latex balloon onto a flat, rigid surface is an experiment that is known and has been performed by many, but on which there is no existing published work. High-speed images taken of the process ...
Quantum information, Bell inequalities and the no-signalling principle
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-02-04)
This PhD thesis contains a general introduction and three main chapters. Chapter 2 investigates Bell inequalities that generalize the CHSH and Braunstein-Caves inequalities. Chapter 3 shows a derivation of an upper bound ...
The flow of rivers into lakes: Experiments and models
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-06-12)
This study considers the motion of river water flowing into a lake. The study has two parts: field observations of an interflowing river in Lake Iseo (Italy); and laboratory experiments on basins fed by an underflow. In ...
Nonlinear and non-modal stability of structures evolving in shear flows
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-04-08)
This thesis explores a range of stability techniques applied to fluid structures that develop in various constant density flows. In particular, the stability of nonlinear structures which develop in rotating plane Couette ...
Designing a more nonlinearly stable laminar flow via boundary manipulation
(Cambridge University PressJournal of Fluid Mechanics, 2013-12-04)
We show how a fully nonlinear variational method can be used to design a more nonlinearly stable laminar shear flow by quantifying the effect of manipulating the boundary conditions of the flow. Using the example of plane ...
Dynamical instabilities in disc-planet interactions
(University of Cambridge, 2012-01-10)
Protoplanetary discs can be dynamically unstable due to structure induced
by an embedded giant planet. In this thesis, I discuss the stability of such
systems and explore the consequence of instability on planetary ...
Magnetic relaxation, current sheets, and structure formation in an extremely tenuous fluid medium
(IOPScienceThe Astrophysical Journal, 2013-12-03)
The process of relaxation of a unidirectional magnetic field in a highly conducting tenuous fluid medium is considered. Null points of the field play a critical role in this process. During an initial stage of relaxation, ...
Astrophysical tests of modified gravity
(University of CambridgeDepartment of Applied Mathematics and Theoretical Physics, 2014-10-07)
Einstein's theory of general relativity has been the accepted theory of gravity for nearly a century but how well have we really tested it? The laws of gravity have been probed in our solar system to extremely high precision ...