重新配置形状以提高水下螺旋桨效率

IF 2.5 3区物理与天体物理 Q2 PHYSICS, FLUIDS & PLASMAS

Physical Review Fluids Pub Date : 2024-07-26 DOI:10.1103/physrevfluids.9.074402

Tristan Aurégan, Sylvain Courrech du Pont, Benjamin Thiria

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引用次数: 0

摘要

我们通过实验研究了带弦向柔性叶片的螺旋桨在水中的推进效率，这种叶片在流体载荷的作用下会发生变形。通过比例模型实验，我们记录了叶片的变形以及转子产生的推力和扭矩。使用柔性材料可以提高对外部条件变化的适应能力：在最佳柔性条件下，叶片可以变形，并在非设计条件下保持高效。我们推导出了叶尖变形的理论规律，并与实验结果表明了良好的一致性。我们的研究结果表明，仅利用叶片的柔韧性，我们就能对叶片变形进行编程，使其在给定的参数范围内被动地采用优化形状，从而实现高效推进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Shape reconfiguration for underwater propeller efficiency improvement

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Shape reconfiguration for underwater propeller efficiency improvement

We investigate experimentally the propulsive efficiency of a propeller in water with chordwise flexible blades that deform under the action of fluid loading. Using a scale model experiment, we record the deformation of the blades as well as the thrust and torque generated by the rotor. The use of flexible materials can improve the resilience to changing external conditions: with optimal flexibility, the blades deform and remain efficient under off-design conditions. We derive a theoretical law for blade tip deformation and show good agreement with experiments. Our results suggest that, using only the blade flexibility alone, we are able to program the blade deformation to passively adopt an optimized shape for efficient propulsion within a given parameter range.

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来源期刊

Physical Review Fluids Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

5.10

自引率

11.10%

发文量

488

期刊介绍： Physical Review Fluids is APS’s newest online-only journal dedicated to publishing innovative research that will significantly advance the fundamental understanding of fluid dynamics. Physical Review Fluids expands the scope of the APS journals to include additional areas of fluid dynamics research, complements the existing Physical Review collection, and maintains the same quality and reputation that authors and subscribers expect from APS. The journal is published with the endorsement of the APS Division of Fluid Dynamics.