Numerical simulation study on drag reduction performance of streamline collective model on plane

IF 1.8 4区物理与天体物理 Q4 CHEMISTRY, PHYSICAL

The European Physical Journal E Pub Date : 2025-02-01 DOI:10.1140/epje/s10189-025-00473-8

Guanghao Li, Gongbo Li, Xin Fang, Guijie Liu

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Abstract

The energy carried by underwater vehicles is primarily employed to overcome water resistance. Reducing resistance can significantly enhance the speed and endurance of underwater vehicles. This study draws inspiration from biomimicry principles and proposes a novel drag reduction method inspired by the structural dynamics of fish schools. Building upon the structure of fish school, a collective model of streamlined forms is established. These streamlined collective models are arranged on a plane, and the study investigates the impact of various streamlined collective structures on planar resistance. By changing the spacing of the streamline collective model and flow field velocity, the drag reduction rules of different models at different flow rates are obtained. Through flow field analysis, the mechanism through which streamlined collective models achieve drag reduction on a flat surface is revealed. The research indicates that the streamlined collective models reduce total resistance by diminishing the viscous drag on the flat plate. The drag reduction effect generally decreases and then increases as the lateral spacing of the streamlined collective model increases. The maximum drag reduction rate can reach up to 8.63%. This study provides a novel approach for drag reduction in underwater vehicles, paving the way for further exploration and application development in this field.

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来源期刊

The European Physical Journal E CHEMISTRY, PHYSICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

2.60

自引率

5.60%

发文量

审稿时长

3 months

期刊介绍： EPJ E publishes papers describing advances in the understanding of physical aspects of Soft, Liquid and Living Systems. Soft matter is a generic term for a large group of condensed, often heterogeneous systems -- often also called complex fluids -- that display a large response to weak external perturbations and that possess properties governed by slow internal dynamics. Flowing matter refers to all systems that can actually flow, from simple to multiphase liquids, from foams to granular matter. Living matter concerns the new physics that emerges from novel insights into the properties and behaviours of living systems. Furthermore, it aims at developing new concepts and quantitative approaches for the study of biological phenomena. Approaches from soft matter physics and statistical physics play a key role in this research. The journal includes reports of experimental, computational and theoretical studies and appeals to the broad interdisciplinary communities including physics, chemistry, biology, mathematics and materials science.