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论文类型： 期刊论文

发表时间： 2018-04-01

发表刊物： RENEWABLE ENERGY

收录刊物： SCIE、EI、Scopus

卷号： 118

页面范围： 955-964

ISSN号： 0960-1481

关键字： Wave energy; Wave diffraction; Artificial upwelling; Potential flow theory; Submerged tubular structure

摘要： A submerged tubular wave energy converter, whose main structure is an upright concentric circular cylinder, is proposed. The turbine is installed near the bottom of the internal tunnel for the survivability consideration. The analytical solution for the wave diffraction problem of the structure is derived based on the linear potential flow theory. The oscillatory mass flow rate in the tunnel is particularly investigated for it can be used to assess the feasibility of the converter that utilises the vertically oscillatory water flow. The effect of the submerged tubular structure in a wave field is to guide the vertically oscillatory motion, the magnitude of which, otherwise, diminishes exponentially with depth, down to the deeper water. That greatly increases the available kinetic energy for the turbine installed in the deep water. Effects of the parameters of the tubular structure on the efficiency of the device are also discussed. (C) 2017 Elsevier Ltd. All rights reserved.