Pruessner, LD; (2013) Waves on Flexible Surfaces. Doctoral thesis , UCL (University College London).

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Abstract

The overall concern of the thesis is with fluid-body interaction in the sense of the fluid dynamics of external ow past a bluff body or other bounding surface whose shape responds to the flow properties. The work is motivated for the most part by industrial connections. Neither the flow nor the body shape is known at the outset. Indeed the major task described in the thesis is to predict the flow and the shape with a special emphasis being on the interactive behaviour inferred at relatively large flow rates. Allied with the above is the application of novel mathematical modelling, analysis and computation. The thesis addresses in turn some of the detail in the motivation for the work, the focus of the study, the most relevant background literature, the aim of the investigations and then the rest of the thesis. The latter part centres on triple-deck theory and related theory, linear and nonlinear phenomena, two-dimensional and three-dimensional responses, steady and unsteady interactions, and new kinds of resonances that are found, accompanied by typical real-world values of the parameters involved in the controlling systems.

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