Effect of wave amplitude on energy absorption characteristics of traveling wave turbine under different wave numbers

IF 9 1区工程技术 Q1 ENERGY & FUELS

Energy Pub Date : 2025-04-17 DOI:10.1016/j.energy.2025.136210

Kairui Lu, Pengcheng Ruan, Yang Bai, Hongyu Gao

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引用次数: 0

Abstract

Turbines are typical energy conversion devices used in the electricity, shipbuilding, and aviation industries. Based on research on traveling wave energy acquisition methods, a novel kind of built-in traveling wave turbine is created. The effects of traveling wave turbines on energy harvesting characteristics under varying wave numbers are investigated through numerical simulation, with equivalent wave amplitudes being dimensionless. By analyzing the structure of the convection field, the mechanism of energy conversion was elucidated. It is revealed that increasing the wave number can enhance the energy absorption efficiency of the traveling wave plate, with the maximum efficiency of the double wave numbers exceeding that of the single wave number by 3.01 %. With the rise in dimensionless amplitude while keeping the wave number constant, the energy absorption efficiency of the traveling wave plate follows a tendency of initially increasing and then decreasing. Incrementing the wave number and dimensionless amplitude can to some extent boost the power coefficient of lateral force. Through flow-field analysis, it is established that the best position for energy acquisition of the traveling wave plate predominantly lies in the plate's rear section, elevating the wave number of the traveling wave plate serves to thereby enhancing energy utilization efficiency.

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不同波数下波浪幅值对行波涡轮能量吸收特性的影响

涡轮机是电力、造船和航空工业中典型的能量转换设备。基于对行波能量获取方法的研究，一种新型内置行波涡轮机应运而生。在等效波幅为无量纲的情况下，通过数值模拟研究了行波涡轮机在不同波数下对能量采集特性的影响。通过分析对流场的结构，阐明了能量转换的机理。结果表明，增加波数可提高行波板的能量吸收效率，双波数的最大效率比单波数高出 3.01%。在波数不变的情况下，随着无量纲振幅的增大，行波板的能量吸收效率呈先增大后减小的趋势。增加波数和无量纲振幅可以在一定程度上提高侧向力的功率系数。通过流场分析，确定了行波板能量获取的最佳位置主要在板的后部，提高行波板的波数有助于提高能量利用效率。

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来源期刊

Energy 工程技术-能源与燃料

CiteScore

15.30

自引率

14.40%

发文量

审稿时长

14.2 weeks

期刊介绍： Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.