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Quantitative imaging of the air-water flow fields formed by unsteady breaking waves

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dc.contributor.advisor Alexandra H. Techet. en_US Belden, Jesse (Jesse Levi) en_US
dc.contributor.other Massachusetts Institute of Technology. Dept. of Mechanical Engineering. en_US 2009-10-01T15:59:38Z 2009-10-01T15:59:38Z 2009 en_US 2009 en_US
dc.description Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009. en_US
dc.description Includes bibliographical references (p. 97-101). en_US
dc.description.abstract An experimental method for simultaneously measuring the velocity fields on the air and water side of unsteady breaking waves is presented. The method is applied to breaking waves to investigate the physics of the air and water flow fields to further our knowledge of the impact of wave breaking on air-sea interaction. The method includes a novel technique for seeding the air flow such that the air velocity can be resolved in the absence of wind. Low density particles which have large Stokes drag and ability to respond to high frequency flow fluctuations are used to seed the air flow. Multi-camera, multi-laser particle image velocimetry (PIV) setups are applied to small-scale shoaling breaking waves, yielding fully time-resolved velocity fields. The surface tension of the fluid is altered and controlled to form both spilling and plunging breaking waves. Application of the developed experimental method to these breaking waves reveals interesting flow physics in the air and water. Results for the velocity and vorticity fields on the water side show qualitative agreement to published data, and comparisons are drawn where applicable. Quantitative experimental data for the air flow induced by wave breaking in the absence of wind has not previously been observed, to the author's knowledge. Revealing physical insights and observations are drawn from this novel data. en_US
dc.description.statementofresponsibility by Jesse Belden. en_US
dc.format.extent 101 p. en_US
dc.language.iso eng en_US
dc.publisher Massachusetts Institute of Technology en_US
dc.rights M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. en_US
dc.rights.uri en_US
dc.subject Mechanical Engineering. en_US
dc.title Quantitative imaging of the air-water flow fields formed by unsteady breaking waves en_US
dc.type Thesis en_US S.M. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Mechanical Engineering. en_US
dc.identifier.oclc 435526775 en_US

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