摘要
针对我国波浪发电的发展现状,介绍了"海蛇"波浪发电装置的发电原理,并应用Orca Flex软件建立了装置的水动力数值模型,研究了"海蛇"装置浮筒的水动力特性。根据"海蛇"装置的结构特点,通过对活塞运动的时程曲线进行傅里叶变换,给出此装置一级转化总势能计算的简易方法。另外,通过改变浮筒的直径和长度,以装置的效率/体积比作为衡量系统经济性的指标,研究浮筒几何参数对装置一级能量转化效率的影响。结果表明,装置一级能量转化效率随浮筒长度和直径增加而变大,进一步分析表明,适当增加浮筒长度比增大直径更具经济效益。装置的效率/体积比随着浮筒直径增加存在先增加后减少的拐点,这可以为"海蛇"的初始设计提供一定的理论依据。
In view of the current development of wave energy converters in China, the electricity generation principle of the Pelamis system is introduced in this paper, and the hydrodynamic model of the device is built with the Orca Flex software, so as to study the dynamic response of the buoy. According to the characteristics of the device structure, a simple calculation method of the total potential energy is proposed by conducting Fourier transform for the time history of piston. In addition, through changing the length and diameter of the buoy, the effects of the buoy geometrical parameters on the preliminary energy converting efficiency are analyzed, with the efficiency/size ratio as the index of economical efficiency. The results show that the converting efficiency rises as the length and diameter of the buoy increase. Further analysis shows that properly increasing the length of the buoy is more cost-effective than enlarging its diameter, and the converting efficiency per unit volume of the buoy can provide the theoretic basis for the preliminary design of the Pelamis wave power device.
出处
《海洋技术》
2015年第1期82-88,共7页
Ocean Technology
基金
国家973重大专项资助项目(2014CB046802)
教育部回国基金资助项目(2013D4-0008)
关键词
波浪发电
海蛇
浮筒
能量转化效率
水动力特性
wave power
Pelamis
buoy
energy converting efficiency
hydrodynamic characteristics
作者简介
程阳（1991-），男，硕士研究生，主要从事海洋结构物设计研究。E-mail：15922256215@163.com
通讯作者：李英（1975-）,女，博士，副研究员，主要从事海洋结构物设计研究。E-mail：yinglicsu@hotmail．com
