[1] Ocean Univ China, Coll Engn, 238 Songling Rd, Qingdao 266100, Peoples R China
[2] Shandong Prov Key Lab Ocean Engn, 238 Songling Rd, Qingdao 266100, Peoples R China
[3] Pilot Natl Lab Marine Sci & Technol Qingdao, 1 Wenhai Rd, Qingdao 266237, Peoples R China
[4] Ocean Univ China, Qingdao Municipal Key Lab Ocean Renewable Energy, Qingdao 266100, Peoples R China