Comparative analysis on energy-harvesting performance of flapping foils with different flaps

ZHANG Gang; SUN Xiaojing

doi:10.7638/kqdlxxb-2021.0412

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Comparative analysis on energy-harvesting performance of flapping foils with different flaps

更新时间：2026-05-28

- Comparative analysis on energy-harvesting performance of flapping foils with different flaps
- Vol. 41, Issue 5, Pages: 35-47(2023)
- 作者机构：
  
  1. 上海理工大学能源与动力工程学院,上海,200093
  2. 上海市动力工程多相流动与传热重点实验室,上海,200093
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2021.0412
  CLC： V211.3;V211.41
- Published：2023
- 稿件说明：
移动端阅览
张刚, 孙晓晶. 襟翼形式对扑翼获能特性影响的对比分析[J]. 空气动力学学报, 2023, 41(5): 35−47.

ZHANG Gang, SUN Xiaojing. Comparative analysis on energy-harvesting performance of flapping foils with different flaps[J]. 2023, 41(5): 35-47.
张刚, 孙晓晶. 襟翼形式对扑翼获能特性影响的对比分析[J]. 空气动力学学报, 2023, 41(5): 35−47. DOI： 10.7638/kqdlxxb-2021.0412

ZHANG Gang, SUN Xiaojing. Comparative analysis on energy-harvesting performance of flapping foils with different flaps[J]. 2023, 41(5): 35-47. DOI： 10.7638/kqdlxxb-2021.0412.

摘要

提高新能源利用效率、减少石化能源的消耗，是实现我国“碳达峰、碳中和”目标的关键。扑翼式获能器是一种可从流体中获取能量且结构简单、环境友好的新型获能装置。为有效提高传统扑翼获能器的获能特性，提出一种带有尾缘襟翼的新型扑翼获能器，并采用计算流体力学（CFD）方法对其获能特性进行了数值模拟研究，比较了采用不同偏转策略的带尾缘襟翼扑翼的绕流流场和获能效率，发现在一个运动周期里尾缘采用连续偏转（TP式）方法提升扑翼获能特性的效果最为显著。最后，对比分析了主动式的尾缘襟翼和被动式的格尼襟翼对其扑翼获能性能的影响。结果表明，尾缘襟翼对扑翼获能效率的提升主要体现在中高缩减频率工况（

= 0.12～0.22），在

= 0.18时获能效率最大，可提高到46.3%；而格尼襟翼对扑翼获能效率的提升主要体现在中低缩减频率工况（

= 0.08～0.14），在

= 0.12时获能效率最大，可提高到41.2%。因此这两种方法都具有实际应用前景和发展潜力。

Abstract

In addition to reducing the consumption of fossil energy

improving the energy-harvesting efficiency is also one of the key factors to achieve the goal of "carbon peak and carbon neutrality" in China. Flapping wings are simple and environmentally friendly devices that can harvest energy from fluids. To improve the energy-harvesting efficiency of flapping wings

a novel flapping wing with trailing-edge flaps is proposed

whose performance is characterized by investigating the flow fields obtained by

numerical simulations. By changing the deflection strategy of trailing-edge flaps

it is found that the continuous deflection in one motion cycle can achieve the most significant improvement in the energy-harvesting performance. Finally

a comparative analysis on the performance of active trailing-edge flaps and passive Gurney flaps is carried out. Results show that

depending on the reduced frequency

both types of flaps can achieve promising performance thus they are potential for future application. The Gurney flaps are applicable when the reduced frequency is in the range (

= 0.08 ~ 0.14)

with the maximum efficiency of 41.2% at

= 0.12. By comparison

the trailing-edge flaps perform well in the higher frequency range (

= 0.12 ~ 0.22)

with the maximum efficiency of 46.3% at

= 0.18.

关键词

Keywords

references

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