Oxygenation Experiments in the Wave Breaking Zone

by E.I. Daniil, Natl Technical Univ of Athens, Athens, Greece,
C. I. Moutzouris, Natl Technical Univ of Athens, Athens, Greece,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Experiments on oxygenation due to waves breaking on a uniformly sloping beach were carried out at the laboratory of Harbor Works, National Technical University of Athens. The influence of increasing wave frequency and wave height on the oxygen transfer coefficients is discussed. Results are compared to experimental data for non-breaking waves. It is concluded that oxygen transfer coefficients vary linearly with the maximum vertical wave velocity at the water surface. The presence of breaking waves leads to much higher transfer coefficients than in the case of non-breaking waves. As a consequence, it is recommended that the wave breaking zone and its related parameters be determined in order to improve the design of sewage outfall and to avoid adverse environmental effects.

Subject Headings: Breaking waves | Wave propagation | Beaches | Oxygen transfer | Slopes | Frequency response | Wave height | Wave velocity

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