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The characterization of particle clouds using optical imaging techniques

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dc.contributor.advisor E. Eric Adams. en_US Bruce, Elizabeth J. (Elizabeth Jane), 1972- en_US
dc.contributor.other Woods Hole Oceanographic Institution. en_US 2010-10-05T14:27:44Z 2010-10-05T14:27:44Z 1998 en_US
dc.description Thesis (M. Eng. in Ocean Engineering)--Joint Program in Marine Environmental Systems (Massachusetts Institute of Technology, Dept. of Ocean Engineering; and the Woods Hole Oceanographic Institution), 1998. en_US
dc.description Includes bibliographical references (leaves 70-71). en_US
dc.description.abstract Optical imaging techniques can be used to provide a better understanding of the physical properties of particle clouds. The purpose of this thesis is to design, perform and evaluate a set of experiments using optical imaging techniques to characterize parameters such as shape factor and entrainment coefficient which govern the initial descent phase of particle clouds in water. Several different aspects of optical imaging are considered and evaluated such as the illumination, camera, and data acquisition components. A description of the experimental layout and procedure are presented along with a description of the image processing techniques used to analyze the data collected. Results are presented from a set of experiments conducted with particle sizes ranging from 250 to 980um. A shape factor is used to demonstrate how the cloud's shape changes from approximately spherical to approximately hemispherical over depth. The entrainment coefficient is shown to vary both as a function of depth and particle size diameter. The experimental cloud velocity is compared to the output of a simplified version of the model, STFATE, used to simulate the short term fate of dredged materials in water. This analysis provides a method of evaluating the experimental results and examining the feasibility of using the experimental data to refine the input parameters to the model. en_US
dc.description.statementofresponsibility by Elizabeth J. Bruce. en_US
dc.format.extent 84 leaves 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 Joint Program in Marine Environmental Systems. en_US
dc.subject Ocean Engineering. en_US
dc.subject Woods Hole Oceanographic Institution. en_US
dc.subject.lcc GC7.8 .B78 en_US
dc.subject.lcsh Particles Optical properties en_US
dc.subject.lcsh Image processing en_US
dc.title The characterization of particle clouds using optical imaging techniques en_US
dc.type Thesis en_US M.Eng. en_US
dc.contributor.department Joint Program in Marine Environmental Systems. en_US
dc.contributor.department Massachusetts Institute of Technology. Dept. of Ocean Engineering. en_US
dc.contributor.department Woods Hole Oceanographic Institution. en_US
dc.identifier.oclc 40240333 en_US

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