基于 CFD 田口方法和神经网络的半主动水翼推进性能优化

IF 2.5 3区 工程技术 Q2 MECHANICS European Journal of Mechanics B-fluids Pub Date : 2024-02-16 DOI:10.1016/j.euromechflu.2024.02.005
Zhenyu Song , Jianyang Zhu , Chao Wang
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引用次数: 0

摘要

为了改善现有纯俯仰运动水翼的推进性能,结合 CFD、田口方法和神经网络,系统研究了改变刚度比、阻尼比和惯性比对半主动 NACA 0012 水翼推进效率的影响。结果表明,被动俯仰运动会显著影响水翼的推进性能。与纯起伏水翼相比,优化后的半主动水翼的推进效率最高可提高 20.97%。进一步的分析表明,被动俯仰运动可以减弱水翼周围涡流的强度,从而降低水翼的推力和升力,从而减少水翼主动翻腾运动所消耗的功率。虽然推力系数降低了,但被动俯仰水翼消耗的能量却减少了很多,从而提高了半主动水翼的推进效率。
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Optimization of semi-active hydrofoil propulsion performance based on CFD Taguchi method and neural network

In order to improve the propulsive performance of the existing pure heaving motion hydrofoil, the effect of varying stiffness ratio K*, damping ratio C* and inertia ratio J* on the propulsive efficiency of the semi-active NACA 0012 hydrofoil is systematically investigated by using the combination of CFD, Taguchi method and neural network. The results show that the passive pitching motion can significantly affect the propulsive performance of the hydrofoil. Compared to the pure heaving hydrofoil, the propulsive efficiency of the optimized semi-active hydrofoil can be improved by up to 20.97%. Further analysis reveals that the passive pitching motion can weaken the strength of the vortex around the hydrofoil, thus reducing the thrust and lift force on the hydrofoil, which results less power consumed by the active heaving motion of the hydrofoil. Although the thrust coefficient is reduced, the energy consumed by the passive pitching hydrofoil is reduced more, which leads a higher propulsive efficiency of the semi-active hydrofoil.

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来源期刊
CiteScore
5.90
自引率
3.80%
发文量
127
审稿时长
58 days
期刊介绍: The European Journal of Mechanics - B/Fluids publishes papers in all fields of fluid mechanics. Although investigations in well-established areas are within the scope of the journal, recent developments and innovative ideas are particularly welcome. Theoretical, computational and experimental papers are equally welcome. Mathematical methods, be they deterministic or stochastic, analytical or numerical, will be accepted provided they serve to clarify some identifiable problems in fluid mechanics, and provided the significance of results is explained. Similarly, experimental papers must add physical insight in to the understanding of fluid mechanics.
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