Open AccessVERTICAL VARIATION OP UNDERTOW IN THE SURF ZONE
Author(s) -
Akio Okayasu,
Tomoya Shibayama,
Kiyoshi Horikawa
Publication year - 1988
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
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.