VERTICAL VARIATION OP UNDERTOW IN THE SURF ZONE | Zendy

Akio Okayasu | Zendy; Tomoya Shibayama | Zendy; Kiyoshi Horikawa | Zendy

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VERTICAL VARIATION OP UNDERTOW IN THE SURF ZONE

Author(s) -

Akio Okayasu,

Tomoya Shibayama,

Kiyoshi Horikawa

Publication year - 1988

Publication title -

coastal engineering proceedings

Language(s) - English

Resource type - Journals

eISSN - 2156-1028

pISSN - 0589-087X

DOI - 10.9753/icce.v21.33

Subject(s) - surf zone , turbulence , geology , reynolds stress , mechanics , meteorology , geography , physics , oceanography

In order to establish a model of the vertical distribution of the undertow, laboratory experiments were performed on uniform slopes of 1/20 and 1/30. The turbulent velocity in the surf zone including the area close to the bottom was measured by using a two-component laser doppler velocimeter. The distributions of the mean Reynolds stress and the mean eddy viscosity coefficient were calculated. Based on the experimental results, a model to predict the vertical profile of the undertow was presented.

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