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基于雨燕翅膀的仿生三角翼气动特性计算研究

张庆 叶正寅

张庆, 叶正寅. 基于雨燕翅膀的仿生三角翼气动特性计算研究[J]. 力学学报, 2021, 53(2): 373-385. doi: 10.6052/0459-1879-20-265
引用本文: 张庆, 叶正寅. 基于雨燕翅膀的仿生三角翼气动特性计算研究[J]. 力学学报, 2021, 53(2): 373-385. doi: 10.6052/0459-1879-20-265
Zhang Qing, Ye Zhengyin. COMPUTATIONAL INVESTIGATIONS FOR AERODYNAMIC PERFORMANCE OF BIO-INSPIRED DELTA-WING BASED ON SWIFT-WING[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(2): 373-385. doi: 10.6052/0459-1879-20-265
Citation: Zhang Qing, Ye Zhengyin. COMPUTATIONAL INVESTIGATIONS FOR AERODYNAMIC PERFORMANCE OF BIO-INSPIRED DELTA-WING BASED ON SWIFT-WING[J]. Chinese Journal of Theoretical and Applied Mechanics, 2021, 53(2): 373-385. doi: 10.6052/0459-1879-20-265

基于雨燕翅膀的仿生三角翼气动特性计算研究

doi: 10.6052/0459-1879-20-265
基金项目: 1) 国家自然科学基金(11732013);陕西省自然科学基础研究计划资助项目(2019JM-290)
详细信息
    作者简介:

    3) 叶正寅, 教授, 主要研究方向: 非定常空气动力学, 流固耦合力学. E-mail: yezy@nwpu.edu.cn
    2) 张庆, 讲师, 主要研究方向: 垂尾抖振及抑制, 新型飞行器气动布局设计. E-mail: zhangqing2220@mail.nwpu.edu.cn;

    通讯作者:

    张庆

    张庆,叶正寅

  • 中图分类号: V211.41,Q811.6

COMPUTATIONAL INVESTIGATIONS FOR AERODYNAMIC PERFORMANCE OF BIO-INSPIRED DELTA-WING BASED ON SWIFT-WING

  • 摘要: 针对低雷诺数微型飞行器的气动布局, 设计出类似雨燕翅膀的一组具有不同前缘钝度的中等后掠($\varLambda =50^{\circ}$)仿生三角翼. 为了定量对比研究三角翼后缘收缩产生的气动效应, 设计了一组具有同等后掠的普通三角翼. 为了深入研究仿生三角翼布局的前缘涡演化特性以及总体气动特性, 采用数值模拟方法详细地探索了低雷诺数($Re=1.58\times 10^{4})$流动条件下前缘涡涡流结构和气动力随迎角的变化规律. 分析结果表明, 前缘钝度和后缘收缩对仿生三角翼前缘涡的涡流强度和涡破裂位置有显著影响. 相对于钝前缘来说, 尖前缘使仿生三角翼上下表面的压力差增大, 涡流强度也更大, 增升作用也更显著. 相对于普通三角翼构型, 仿生三角翼的前缘斜切使其阻力更大, 但后缘的收缩使涡破裂位置固定在此位置, 因此整个上翼面保持低压, 总的升力更大. 由于小迎角时升力增大更明显, 因此仿生三角翼的气动效率在小迎角时明显大于普通三角翼. 这些结论对于揭示鸟类的飞行机理以及未来微型仿生飞行器的气动布局设计具有重要的研究价值.

     

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出版历程
  • 收稿日期:  2020-08-02
  • 刊出日期:  2021-02-10

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