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首页> 外文期刊>Ocean Engineering >Performance investigation of a self-propelled foil with combined oscillating motion in stationary fluid
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Performance investigation of a self-propelled foil with combined oscillating motion in stationary fluid

机译：自推进金属箔在固定流体中的联合振荡运动性能研究

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摘要

The performance of a self-propelled foil in stationary fluid is numerically studied in this paper. To conduct the numerical simulations, an immersed boundary-simplified circular function-based gas kinetic method is used. The investigation first compares the self-propulsion performances of flapping foil with three different patterns, i.e., pure heaving motion, pure pitching motion, and combined oscillating motion. It is found that the combined oscillating foil generally outperforms the heaving foil. Whilst the heaving foil performs better than the pitching foil with the moderate motion frequency and amplitude. Moreover, the effects of Reynolds number, phase difference, and pivot location on the self-propulsion of the combined oscillating foil are also examined. The results obtained indicate that there exists a threshold value of Reynolds number, and below which the propulsion performance declines considerably. In addition, the phase difference can reverse the foil's auto-propelled direction. Furthermore, the pivot location near the center of mass can both reduce the power consumption and increase the efficiency significantly. The results obtained here may be utilized to optimize the design of propellers of micro aerial/underwater robots.
机译：本文通过数值研究了自推进箔在固定流体中的性能。为了进行数值模拟，使用了一种基于边界简化的浸入式边界函数的气体动力学方法。该研究首先将拍打箔的自推进性能与三种不同的模式进行比较，即纯抛运动，纯俯仰运动和组合振荡运动。已经发现，组合的振动箔通常优于起伏箔。尽管在中等运动频率和振幅下，起伏箔片的性能优于俯仰箔片。此外，还研究了雷诺数，相位差和枢轴位置对组合振荡箔片自推进的影响。获得的结果表明存在雷诺数阈值，并且在该阈值以下，推进性能显着下降。另外，相位差会使箔的自动推进方向反转。此外，靠近质心的枢轴位置可以减少功耗并显着提高效率。此处获得的结果可用于优化微型空中/水下机器人的螺旋桨设计。

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  • 来源
    《Ocean Engineering》 |2019年第1期|33-49|共17页
  • 作者

    Lin Xingjian; Wu Jie; Zhang Tongwei;

  • 作者单位

    Nanjing Univ Aeronaut & Astronaut, Dept Aerodynam, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China|Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Unsteady Aerodynam & Flow Control, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, State Key Lab Mech & Control Mech Struct, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China|Nanjing Univ Aeronaut & Astronaut, Dept Aerodynam, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China|Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Unsteady Aerodynam & Flow Control, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

    Nanjing Univ Aeronaut & Astronaut, Dept Aerodynam, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China|Nanjing Univ Aeronaut & Astronaut, Minist Ind & Informat Technol, Key Lab Unsteady Aerodynam & Flow Control, Yudao St 29, Nanjing 210016, Jiangsu, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Self-propulsion performance; Combined oscillating foil; Pure heaving foil; Pure pitching foil;

    机译：自推进性能;组合振荡箔;纯胀箔;纯沥青;

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