任翔,邓争志,程鹏达.带纵摇前墙的新型振荡水柱式波浪能装置转换效率以及水动力性能数值研究[J].海洋工程,2021,39(5):66~77
带纵摇前墙的新型振荡水柱式波浪能装置转换效率以及水动力性能数值研究
Numerical simulation on the extraction efficiency and hydrodynamic performance of an OWC device with a pitching front-wall
投稿时间:2021-03-02  
DOI:10.16483/j.issn.1005-9865.2021.05.007
中文关键词:  OpenFOAM  振荡水柱  纵摇前墙  透射系数  耗散系数  波能转换效率
英文关键词:OpenFOAM  oscillating water column  pitching front-wall  transmission coefficient  dissipation coefficient  wave energy conversion efficiency
基金项目:国家自然科学基金青年基金项目(11702244)
作者单位E-mail
任翔 浙江大学 海洋学院, 浙江 舟山 316021  
邓争志 浙江大学 海洋学院, 浙江 舟山 316021 zzdeng@zju.edu.cn 
程鹏达 中国科学院 力学研究所, 北京 100190  
摘要点击次数: 102
全文下载次数: 51
中文摘要:
      提出了一种带纵摇前墙的新型振荡水柱式波浪能(OWC)装置,借助OpenFOAM开源代码平台和waves2Foam工具包,数值模拟研究带纵摇前墙OWC装置的水动力性能和转换效率。主要研究前墙吃水d1、前墙密度ρ、后墙吃水d2、旋转约束力(用无量纲弹簧系数K表示)对该装置的反射系数Cr、透射系数Ct、耗散系数Cd和波能转换效率ξ的影响规律。结果表明,纵摇前墙能有效减少能量耗散,提高波能转换效率ξ;无量纲弹簧系数K对装置转换效率的影响主要集中在短波区域,且在K为0时装置具有最大的转换效率和最宽的高效频率带;前墙的密度和吃水深度对水动力系数影响不大;后墙的吃水深度对水动力系数影响较大,增加吃水深度能有效提高装置对于中短波和中长波段的波能转换效率,但对系统整体的能量耗散系数影响不大。
英文摘要:
      A novel oscillating water column (OWC) device with a pitching front-wall is numerically studied based on the open source platform OpenFOAM and the associated toolbox waves2Foam. The numerical model is employed to investigate the effects of the immersion depth of front-wall d1, the density of the front-wall ρ, the immersion depth of back-wall d2 and the rotational restraint force (represented by the dimensionless stiffness coefficient K) on the reflection coefficients Cr, transmission coefficients Ct, dissipation coefficient Cd and wave energy conversion efficiency ξ of this device. The results show that a pitching front-wall can effectively decrease the dissipation of energy and lead to the increase of wave energy conversion efficiency. The non-dimensional spring coefficient K also affects the wave energy conversion efficiency ξ of the device, especially in the short-wave regimes. The device has the maximum wave energy conversion efficiency and the widest efficient frequency band when K is 0. The density and the immersion depth of thin front-wall have insignificant influence on the hydrodynamic coefficient, while the immersion depth of back-wall affects the hydrodynamic coefficient efficiently. Increasing the draught of back-wall can effectively improve the wave energy conversion efficiency of the device in medium wave regimes, but has little effect on the overall energy dissipation coefficient.
查看全文  查看/发表评论  下载PDF阅读器
关闭
水利部交通运输部国家能源局南京水利科学研究院 海洋工程  版权所有
地址: 南京虎踞关34号 邮编:210024 电话:025-85829332 E-mail: oe@nhri.cn
苏ICP备05007122号