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ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (12): 482-488.DOI: 10.19912/j.0254-0096.tynxb.2021-0741

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不同纵荡幅值下浮式水平轴叶轮的水动力性能分析

张成林1,2, 刘安东2, 王世明1, 谢双义3   

  1. 1.上海海洋大学工程学院,上海 201306;
    2.中国水产科学研究院渔业机械仪器研究所,上海 200092;
    3.重庆理工大学机械工程学院,重庆 400054
  • 收稿日期:2021-06-30 出版日期:2022-12-28 发布日期:2023-06-28
  • 通讯作者: 王世明(1964—),男,博士、教授,主要从事海洋工程装备及海洋可再生能源方面的研究。smwang@shou.edu.cn
  • 基金资助:
    国家自然基金面上项目(41976194); 上海市工程技术研究中心建设计划(19DZ2254800); 重庆理工大学科研启动基金(2020ZDZ023)

ANALYSIS ON HYDRODYNAMIC PERFORMANCE OF FLOATING HORIZONTAL-AXIS IMPELLER UNDER DIFFERENT SURGE AMPLITUDES

Zhang Chenglin1,2, Liu Andong2, Wang Shiming1, Xie Shuangyi3   

  1. 1. College of Engineering, Shanghai Ocean University, Shanghai 201306, China;
    2. Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China;
    3. College of Mechanical Engineering, Chongqing University of Technology, Chongqing 400054, China
  • Received:2021-06-30 Online:2022-12-28 Published:2023-06-28

摘要: 为研究浪流联合环境对于浮式潮流能水轮机性能的影响,对均匀来流环境下施加波浪激励下的水平轴获能叶轮进行水动力分析。结合ANSYS-Fluent流体仿真软件并对其进行二次开发,采用重叠网格法建立均匀来流时浮式获能叶轮受迫运动的水动力分析模型,模拟S型双向潮流能叶轮在不同幅值的纵荡运动时的水动力性能,并结合实际水槽试验对计算结果的准确性进行验证。分析结果显示:纵荡激励使获能叶轮周边的流场速度产生明显的瞬时波动,且获能叶轮受力载荷的波动幅值会因纵荡激励作用的增强而升高;叶轮尾流场的流速变化和流线的变化伴随纵荡幅值的增大而增大,但流场的均匀度伴随纵荡幅值的增大而降低。

关键词: 潮流能, 水动力学性能, 计算流体力学, 叶轮, 重叠网格, 受迫纵荡运动

Abstract: In order to study the effect of wave-current combined environment on the performance of floating tidal current turbine, the hydrodynamic analysis of horizontal axis energy-capacitated impeller under wave excitation in uniform inflow environment is carried out. Combined with ANSYS-Fluent fluid simulation software and its secondary development, the hydrodynamic analysis model of the forced motion of the floating energy-capturing impeller in uniform inflow is established by using the overlapping grid method. The hydrodynamic performance of the S-type bidirectional tidal current energy impeller in surge motion with different amplitudes is simulated, and the accuracy of the calculation results is verified by the actual flume test. The analysis results show that the surge excitation causes obvious instantaneous fluctuation of the flow field velocity around the impeller, and the fluctuation amplitude of the force load of the impeller will increase due to the enhancement of the surge excitation. The velocity change and streamline change of the impeller wake field increase with the increase of the surge amplitude, but the uniformity of the flow field decreases with the increase of the surge amplitude.

Key words: tidal current energy, hydrodynamic performance, computational fluid dynamics, impeller overlapping grid, forced surge motion

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