| 摘要: |
| 为了助力海洋牧场减流防护工程, 研究Savonius型转轮阵列减流性能。作者建立Savonius型转轮三角阵列尾流场数值模型, 并通过水池实验验证准确性, 基于可靠数值模型探究转轮阵列尾涡减流机理, 研究三角阵列结构参数LX、LY, 以及动力参数TSR、初始流速、旋向对整体减流性能的影响规律。结果表明,下游转轮产生的涡流呈现非对称分布, 并且产生更多涡流的转轮拥有更好的减流效果。另外, LX为3D和LY为2D时减流性能最佳。最后对比发现, 在叶尖速比为0.9~1.1减流效果更好; 初始流速大小不影响减流效果; 下游转子对称分布时, 随着上游转子改变旋转方向, 减流效果出现明显差异。 |
| 关键词: Savonius型转轮 减流 阵列单元 尾流场 |
| DOI：10.11759/hykx20231017001 |
| 分类号:P756 |
| 基金项目:宁波市科技创新2025专项(2020Z076); 宁波市自然科学基金资助项目(2023J172); 战略性国际科技创新合作重点专项(2020YFE0200100) |
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| Research on the flow reduction performance of a Savonius hydrokinetic rotor with a triangular array |
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WANG Shenghu1, JIANG Chuhua2, CHEN Junhua1, LI Hao1, WU Siru1
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1.Faculty of Mechanical Engineering & Mechanics, Ningbo University, Ningbo 315211, China;2.Faculty of Mechanical Engineering and Automation, College of Science and Technology Ningbo University, Ningbo 315300, China
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| Abstract: |
| To assist in the flow reduction and protection engineering of marine pastures, the flow reduction performance of Savonius hydrokinetic rotor array units is studied. A numerical model is established for the wake flow field of the Savonius hydrokinetic rotor triangular array, and its accuracy is verified through water tank experiments. Based on a reliable numerical model, the mechanism of vortex reduction is explored in the wake of the hydrokinetic rotor array unit, and the influence of the structural parameters LX and LY of the triangular array, as well as the dynamic parameters TSR, initial velocity, and rotation direction on the overall flow reduction performance, are studied. The results indicate that the vortices generated by downstream rotors exhibit an asymmetric distribution, and rotors generating additional vortices show better flow reduction effects. In addition, the best flow reduction performance is achieved when LX is 3D and LY is 2D. Finally, the comparison shows that the flow reduction effect is better when the blade tip speed ratio is between 0.9 and 1.1. When the downstream rotor is distributed symmetrically, the flow reduction effect differs considerably as the upstream rotor changes its rotation direction. |
| Key words: Savonius hydrokinetic rotor flow reduction array unit wake field |
