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Analysis of near-surface flow measurements beneath clean and contaminated wind-driven water surfaces

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Analysis of near-surface flow measurements beneath clean and contaminated wind-driven water surfaces

Jokardris, Mandana (2004) Analysis of near-surface flow measurements beneath clean and contaminated wind-driven water surfaces. Masters thesis, Concordia University.

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Abstract

In natural water bodies like oceans and lakes, biological organisms and other chemical species cover the water surface affecting the air-sea boundary conditions. At moderate wind speeds, short gravity wind waves occur on the water surface. It has been speculated that most of these short gravity waves are microscale breaking waves, which play a significant role in air-sea gas and heat transfer. This work reports on results from a series of laboratory experiments investigating the impact of surface contamination on the flow characteristics in the near surface region beneath short gravity waves at moderate wind speeds. In addition, the characteristics of parasitic capillary waves and their relation with microscale breaking waves are explored. In this study, the two-dimensional velocity fields were measured using digital particle image velocimetry (DPIV) and water surface temperature measurements were made simultaneously using infrared imagery. Results are reported for two wind speeds, 6.3 and 8.1 m s -1 . (Abstract shortened by UMI.)

Divisions:Concordia University > Faculty of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Authors:Jokardris, Mandana
Pagination:xvii, 122 leaves : ill., some col. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical and Industrial Engineering
Date:2004
Thesis Supervisor(s):Siddiqui, K
ID Code:8378
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:23
Last Modified:18 Aug 2011 14:24
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