摘要
振荡水柱式波能发电系统中波能转换主要结构气室能将入射波能转换为往复振荡的空气动能从而实现能量一次转换,该过程的气室压强研究对发电系统设计具有重要意义。因此针对"引浪板"和"引浪通道"的三维侧向开口固定式振荡水柱波能转换系统,采用三维Green函数法建立了气室内水气动力学性能的压缩空气压强理论计算模型。计算时为了满足压强与速度连续条件,响应脉动源与扰动脉动源两者在交界面上需要相互匹配;同时为了能够精确快速地求解三维Green函数,采用了多维切比雪夫(Chebyshev)多项式和渐近展开式快速近似计算方法。计算结果表明所用方法简单可靠,同时计算结果可应用于振荡水柱波能发电系统性能预测及相关问题研究。
The wave energy conversion into electricity has been increasingly studied in the last years. The oscillating water column （OWC） is probably the most highly developed type of wave energy con- verter. The problem of the pressure control of an OWC in random waves was dealt with in this paper with theory analysis. In order to achieve the initial ocean wave energy conversion, the air chamber plays a critical role to translate incident wave energy into the hi-directional kinematic energy of air for the OWC wave energy generation. It is the pivotal factor to analyze the air chamber＇s pressure. The three- dimensional fixed OWC wave power model are designed with a side entrance and associated with ＇leading wave plate~ and ＇ leading wave channel~. The theoretical calculation method for the compressed air pres- sure in chamber is calculated by the three-dimensional Green function. In this analysis procedure the re- sponse oscillating source should match with the exiting oscillating source on a interface to meet with the continuous conditions between pressure and velocity. The multi-dimensional Chebyshev polynomials and asymptotic expansions was introduced to get the solution of the three-dimensional Green function quickly and accurately. The calculation program is simple and reliable to predict the hydrodynamic and aerody- namic performance especially the air pressure for the OWC wave energy generation systems.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第7期135-141,共7页
Periodical of Ocean University of China
基金
国家自然科学基金项目(51105234)
中国博士后科学基金项目(2015M582113)
山东省自然科学基金项目(ZR2016EEM23)资助~~
关键词
振荡水柱
气室
波浪能
压缩空气压强
oscillation water column
air chamber
wave energy
the compressed air pressure
