New wave generation
Name
Peacock_New wave.pdf
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1.15 MB
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Adobe PDF
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Author(s)
Mercier, Matthieu J.
Martinand, Denis
Mathur, Manikandan S.
Gostiaux, Louis
Peacock, Thomas
Dauxois, Thierry
Date Issued
July 2010
Journal
Journal of Fluid Mechanics
Publisher
Cambridge University Press
Citation
MERCIER, MATTHIEU J., DENIS MARTINAND, MANIKANDAN MATHUR, LOUIS GOSTIAUX, THOMAS PEACOCK, and THIERRY DAUXOIS. New Wave Generation. Journal of Fluid Mechanics 657 (August 19, 2010): 308-334. ©2010 Cambridge University Press.
Version
Final published version
Abstract
We present the results of a combined experimental and numerical study of the generation of internal waves using the novel internal wave generator design of Gostiaux et al. (Exp. Fluids, vol. 42, 2007, pp. 123–130). This mechanism, which involves a tunable source composed of oscillating plates, has so far been used for a few fundamental studies of internal waves, but its full potential is yet to be realized. Our study reveals that this approach is capable of producing a wide variety of two-dimensional wave fields, including plane waves, wave beams and discrete vertical modes in finite-depth stratifications. The effects of discretization by a finite number of plates, forcing amplitude and angle of propagation are investigated, and it is found that the method is remarkably efficient at generating a complete wave field despite forcing only one velocity component in a controllable manner. We furthermore find that the nature of the radiated wave field is well predicted using Fourier transforms of the spatial structure of the wave generator.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1017/s0022112010002454
