Poster Abstract
20. RESEARCH ON MODEL EXPERIMENTS OF THE HYDRAULIC RESISTANCE COEFFICIENT OF ARTIFICIAL REEFS
LIU Jian1, XU Liu-xiong2,3,4, ZHANG Shuo2,3,4 *, HUANG Hong-liang1
1 East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
2 College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China
3 The Key Laboratory of Oceanic Fisheries Resources Exploitation of Shanghai Education Commission, Shanghai Ocean University, Shanghai 201306, China
4 The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China)
The hydraulic resistance coefficient of artificial reefs (AR) under different angles have been studied through wind tunnel experiments, in order to make the quantitative analysis between the resistance coefficient and the opening ratio of the reef on different types of centre opening (circular, triangle, rectangle). The experiment results show that (1) the principal factor of influence is the penetrating opening rate, projection opening rate and the angle of attack, the value of Cd is decreasing with increase of penetrating opening rate (?tt); (2) the formula of the resistance coefficient is Cd=-0.861?tt+0.145?ty+1.268 (R2=0.729, P < 0.01) on different types of opening. We can design a new artificial reef with a good hydrodynamic characteristic by means of the adjusting of the opening rate.
Key words: artificial reef; hydraulic resistance; model test; wind tunnel
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