Department of Ocean Engineering;
College of Engineering;
Ocean University of China;
Qingdao 266100;
China;
Shandong Provincial Key Laboratory of Ocean Engineering;
Ocean University of China;
Qingdao 266100;
China;
Qingdao Municipal Key Laboratory of Ocean Renewable Energy;
Ocean University of China;
Qingdao 266100;
China;
Pilot National Laboratory for Marine Science and Technology(QingDao);
Qingdao 266200;
China;
coaxial double-buoy wave energy converter; hydrodynamic characteristics; model test; power take-off;