Journal of Shandong University(Engineering Science) ›› 2020, Vol. 50 ›› Issue (6): 17-22.doi: 10.6040/j.issn.1672-3961.0.2020.035

Previous Articles    

Power capture influence of the submerged depth for the three-freedom oscillating body wave energy converter

HUANG Shuting1, ZHAI Xiaoyu1, LIU Yanjun1,2*, SHI Hongda3,4   

  1. 1. Institute of Marine Science and Technology, Shandong University, Qingdao 266237, Shandong, China;
    2. School of Mechanical Engineering, Shandong University, Jinan 250061, Shandong, China;
    3. College of Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
    4. Shandong Provincial Key Laboratory of Ocean Engineering, Qingdao 266100, Shandong, China
  • Published:2020-12-15

Abstract: To clarify the power capture influence of the submerged depth for the three-degree-of-freedom(3-DOFs)oscillating buoy wave energy converters, two floating and submerged buoy models were established. Power capture characteristics of the submerged buoys were calculated and compared with different depths and wave conditions. The cylindrical buoy was selected. The submerged depth were 0.5, 1.0, 1.5 and 2.0 times of the buoy’s height. The mass of the buoys were the same. The floating buoy was selected as a comparison. Based on linear potential theory and boundary element method, the hydrodynamic model was established, and the hydrodynamic parameters and kinematic responses of the buoy were calculated. And the optimal average output powers were calculated with linear power take-off(PTO)damping. The effect of submerged depth on the power capture of the buoy was analyzed. The results showed that increasing the submerged depth could reduce buoys wave excitation forces and power absorption. For 3-DOFs buoy, the floating one had a better power capture performance under low frequency waves, while the submerged one with a small submerged depth was better under high frequency waves.

Key words: wave energy, oscillating buoy, multi-freedom buoy, power capture, hydrodynamic characteristic

CLC Number: 

  • TH122
[1] LIU Yanjun, WANG Wei, CHEN Zhi, WANG Donghai, WANG Dengshuai, XUE Gang. The influence of shape parameters of wave energy device floating body on energy capture characteristics [J]. Journal of Shandong University(Engineering Science), 2020, 50(6): 1-8.
[2] WANG Shi-ming1, ZHANG Fu-xi1*, HU Qing-song1, WU Yue2. Analysis of  the water impeller hub radius of a wave power generator based on FLUENT [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2012, 42(2): 64-69.
Full text



No Suggested Reading articles found!