摘要
针对波浪能装置在波浪中的运动响应提出一种基于隐式非稳态流体域k-ε湍流模型的新模拟计算方法,利用Simcenter STAR-CCM+软件流体仿真分析单自由度(single-DOF)垂荡波浪能转换技术中单浮子在波浪作用下的运动特性。波浪能通过垂荡的浮子转化为机械能,输送到动力输出(PTO)机构进行发电。使用流体仿真软件对各种PTO系统参数下浮子的运动和受力特性进行模拟。研究结果表明,计算精度较高,与试验结果基本吻合;随着阻尼系数的增大,浮子的波浪运动幅度和速度减小,转化为浮子的机械能也减小,故在设计波浪能装置时,应尽可能减小阻尼;此外,浮子的垂荡运动平衡位置受到弹簧常数的影响。基于隐式非稳态流体域k-ε湍流模型的新模拟计算方法可用于分析不同波浪能转换装置的流体动力学,可为优化真实海况下装置结构和性能提供理论框架。
This study introduces a novel simulation computation method for motion response of wave energy devices in waves,based on the implicit unsteady fluid domain k-εturbulence model.Utilizing the Simcenter STAR-CCM+software,the fluid simulation analysis was conducted on the motion characteristics of a single buoy in a single-degree-of-freedom(single-DOF)heaving wave energy conversion technology when subjected to wave actions.The wave energy is converted into mechanical energy through the heaving motion of the buoy and then delivered to power take-off(PTO)mechanism for power generation.The software was used to simulate the buoy’s motion and force characteristics under various PTO system parameters.The research results show that the computational accuracy is extremely high,closely matching the experimental results.As the damping coefficient increases,the amplitude and speed of the buoy’s wave motion decreases,resulting in a reduction in the mechanical energy converted by the buoy.Thus,when designing the wave energy device,it is imperative to minimize damping.Additionally,the equilibrium position of the buoy’s heaving motion is affected by the spring constant.The newly introduced simulation computation method based on the implicit unsteady fluid domain k-εturbulence model can be employed to analyze the hydrodynamics of various wave energy conversion devices,providing a theoretical framework for optimizing the device’s structure and performance under real sea conditions.
作者
曹雪玲
叶寅
黄圳鑫
刘洋
张运秋
Cao Xueling;Ye Yin;Huang Zhenxin;Liu Yang;Zhang Yunqiu(School of Naval Architecture and Ocean Engineering,Guangzhou Maritime University,Guangzhou 510725,China;Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,China;Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou),Guangzhou 510640,China)
出处
《太阳能学报》
北大核心
2025年第1期222-228,共7页
Acta Energiae Solaris Sinica
基金
广州市科技计划(202201011193)
广东省教育厅项目(2021KQNCX072)
广东省新能源与可再生能源重点实验室开放基金(E239kf0101)
广东省海洋科技协同创新中心项目(2018B020207014)。
关键词
波浪能
圆柱浮体
数值模拟
水力学
波浪能转换
系统特性
wave power
cylindrical floating body
CFD
hydraulics
wave energy conversion(WEC)
system performance
