紧凑型串联扑翼的结垢规律及性能增强机理

IF 3.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Journal of Fluids and Structures Pub Date : 2025-05-13 DOI:10.1016/j.jfluidstructs.2025.104334

Xingjian Lin , Penghui Zhu , Yusheng Liu , Jie Wu

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引用次数: 0

摘要

天然飞人/游泳运动员的串联双翅/鳍表现出优越的推进性能。然而，其背后的流体机制仍然不确定。本文对具有固定间隙的紧凑型串列扑翼的自推进进行了数值研究。研究发现，与单箔相比，紧凑的串联箔系统有明显的速度提高和效率提高。在相位差和间隙距离适当的情况下，转速的最大增幅可达54%，效率的最大增幅可达72%。在此基础上，提出了紧凑串联翼型系统推进速度和功率消耗的简单标度规律。进一步分析了两叶之间的流固耦合作用，发现速度的提高主要是由于后叶推力的增加。本研究结果可能有助于理解自然飞行者/游泳者的双翼/鳍的推进机制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Scaling laws and performance enhancement mechanism of compact tandem flapping foils

The tandem dual-wings/fins of natural flyers/swimmers exhibit superior propulsive performance. However, the fluid mechanism behind it remains uncertain. In this paper, the self-propulsion of compact tandem flapping foils with a fixed gap is numerically studied. It is found that as compared with a single foil, the compact tandem-foil system has significant speed enhancement and efficiency augmentation. When the phase difference and gap distance are appropriate, the maximum increase in speed can reach up to 54 %, and increase in efficiency can reach up to 72 %. Subsequently, some simple scaling laws are proposed for the propulsive speed and power consumption of the compact tandem-foil system. Furthermore, the fluid-structure interactions between the two foils are analyzed, and it is found that the speed enhancement primarily results from the thrust increase of the hind foil. The results obtained here may shed some light on understanding the propulsion mechanisms of the dual-wings/fins of natural flyers/swimmers.

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来源期刊

Journal of Fluids and Structures 工程技术-工程：机械

CiteScore

6.90

自引率

8.30%

发文量

173

审稿时长

65 days

期刊介绍： The Journal of Fluids and Structures serves as a focal point and a forum for the exchange of ideas, for the many kinds of specialists and practitioners concerned with fluid–structure interactions and the dynamics of systems related thereto, in any field. One of its aims is to foster the cross–fertilization of ideas, methods and techniques in the various disciplines involved. The journal publishes papers that present original and significant contributions on all aspects of the mechanical interactions between fluids and solids, regardless of scale.