CHARACTERISTICS OF DIFFUSION AND AERATION DUE TO WAVE ACTION NEAR PERMEABLE BREAKWATERS | Zendy

Hitoshi Murakami | Zendy; Yoshihiko Hosoi | Zendy

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CHARACTERISTICS OF DIFFUSION AND AERATION DUE TO WAVE ACTION NEAR PERMEABLE BREAKWATERS

Author(s) -

Hitoshi Murakami,

Yoshihiko Hosoi

Publication year - 1988

Publication title -

coastal engineering proceedings

Language(s) - English

Resource type - Journals

eISSN - 2156-1028

pISSN - 0589-087X

DOI - 10.9753/icce.v21.11

Subject(s) - breakwater , aeration , diffusion , reflection coefficient , mechanics , reflection (computer programming) , action (physics) , environmental science , materials science , geotechnical engineering , soil science , thermodynamics , chemistry , geology , physics , optics , quantum mechanics , computer science , programming language , organic chemistry

This paper deals with the effect of wave action on the water purification near a permeable breakwater. When determining standards for water purification, three indexes are usually taken into account: the diffusion coefficient, the concentration reflection ratio and the reaeration coefficient. In our study, the values of the diffusion coefficients Kx near —12 2 the breakwater ranged from about 10 cm /sec to 7x10cm /sec. The effect of aeration caused by setting up a permeable breakwater was limited to within a distance of only one wave length at either side of the breakwater. As a result, values of the reaeration coefficients were then estimated to be in the order of 10 - 10 /sec.

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