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Experimental study of dissolved oxygen transport by regular waves through a perforated breakwater

Content Provider	Springer Nature Link
Author	Yin, Zegao Yu, Ning Liang, Bingchen Zeng, Jixiong Xie, Shaohua
Copyright Year	2016
Abstract	The perforated breakwater is an environmentally friendly coastal structure, and dissolved oxygen concentration levels are an important index to denote water quality. In this paper, oxygen transport experiments with regular waves through a vertical perforated breakwater were conducted. The oxygen scavenger method was used to reduce the dissolved oxygen concentration of inner water body with the chemicals Na$_{2}$SO$_{3}$ and CoCl$_{2}$. The dissolved oxygen concentration and wave parameters of 36 experimental scenarios were measured with different perforated arrangements and wave conditions. It was found that the oxygen transfer coefficient through wave surface, K$_{1}$ a $_{1}$, is much lower than the oxygen transport coefficient through the perforated breakwater, K$_{2}$ a $_{2}$. If the effect of K$_{1}$ a $_{1}$ is not considered, the dissolved oxygen concentration computation for inner water body will not be greatly affected. Considering the effect of a permeable area ratio a, relative location parameter of perforations δ and wave period T, the aforementioned data of 30 experimental scenarios, the dimensional analysis and the least squares method were used to derive an equation of K$_{2}$ a $_{2}$ (K$_{2}$ a $_{2}$=0.0042a $^{0.5}$ δ $^{0.2}$ T $^{-1}$). It was validated with 6 other experimental scenarios data, which indicates an approximate agreement. Therefore, this equation can be used to compute the DO concentration caused by the water transport through perforated breakwater.
Starting Page	78
Ending Page	82
Page Count	5
File Format	PDF
ISSN	16725182
Journal	Journal of Ocean University of China
Volume Number	15
Issue Number	1
e-ISSN	19935021
Language	English
Publisher	Science Press
Publisher Date	2016-01-13
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	regular wave perforated breakwater dissolved oxygen concentration oxygen transfer coefficient oxygen transport coefficient Oceanography Meteorology
Content Type	Text
Resource Type	Article
Subject	Oceanography Ocean Engineering

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