Energy Consumption Modeling for Underwater Gliders Considering Ocean Currents and Seawater Density Variation

Journal of Marine Science and Engineering

Yang Song¹  Yanhui Wang¹  Huangjie Ye¹  Xu Wan¹  Wei Ma¹  Wendong Niu¹ 

[1] Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China;

关键词: energy consumption;    ocean currents;    seawater density variation;    underwater glider;   

DOI  :  10.3390/jmse9111164

来源: DOAJ

【 摘 要 】

Energy management is a critical and challenging factor required for efficient and safe operation of underwater gliders (UGs), and the energy consumption model (ECM) is indispensable. In this paper, a more complete ECM of UGs is established, which considers ocean currents, seawater density variation, deformation of the pressure hull, and asymmetry of gliding motion during descending and ascending. Sea trial data are used to make a comparison between ECMs with and without the consideration of ocean currents, and the results prove that the ECM that considers the currents has a significantly higher accuracy. Then, the relationship between energy consumption and multiple parameters, including gliding velocity relative to the current, absolute gliding angle, and diving depth, is revealed. Finally, a simple example is considered to illustrate the effects of the depth-averaged current on the energy consumption.

【 授权许可】

Unknown