|COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring.|
Blowing a fuse and the dynamic double helix
If you have a question about this talk, please contact Stephen J. Cowley.
Two unrelated problems are discussed. In the first, the breakdown of an electric fuse is considered. It is assumed that the wire melts and the liquid pinches off in finite time. Similarity solutions close to pinchoff are sought in the longwave limit and compared with high-speed photographic images.
The second problem considers the dynamo produced by laminar flow of conducting fluid down helical pipes. Such steady flow generates magnetic field spontaneously. Animations of the fully nonlinear behaviour of this dynamo are presented, showing oscillations, quenching and reversal. Calculations are extended to two interwoven helical pipes which drive a dynamo in a wider range of Reynolds numbers.
This talk is part of the Monday Mechanics Seminars (DAMTP) series.
This talk is included in these lists:
Note that ex-directory lists are not shown.
Other listsWell-being Institute Seminars Kettle's Yard DPMMS Presentations
Other talksOverview of cancer theoretical framework The Great War and the British Problem, 1914-2014 Latent variable models: factor analysis and all that Histopathology 2014: Advances in research and techniques Self-Control and Weakness of Will New insights into past methane cycle changes from ice cores