摘要
在一定的运动参数条件下,行波运动可以从流水或风中吸取能量。以NACA0012翼型作为行波运动鱼体二维简化模型的原始翼型,采用数值模拟的方法研究波长及波速对行波运动获能特性的影响。结果表明:当波长不变时,随着无量纲波速的增大,行波运动从流水中吸收的能量(无量纲侧向功率)和能量利用率先增大后减小,并存在一个最佳波速使得无量纲侧向功率和能量利用率达到最大;对于不同的行波波长,最佳无量纲波速为一定值;在低无量纲波速和高无量纲波速下,随着波长的增大,无量纲侧向功率和能量利用率均先增大后减小;在中无量纲波速下,无量纲侧向功率和能量利用率随着波长增大而减小。
It has been recognized that traveling wave motion can extract energy from flowing water or wind under certain motion conditions.In this paper,the NACA0012 airfoil was used as the primitive airfoil of the two-dimensional simplified model of traveling fish.The effects of wave velocity and wavelength on the energy extraction of traveling wave were studied using numerical simulation method.The findings indicated that under constant wavelength,the energy extracted from water by traveling wave motion(non-dimensional lateral power)increased at first and then decreased with increased dimensionless wave velocity.There was an optimum wave velocity at which the maximum dimensionless lateral power and energy extraction efficiency were achieved.At low dimensionless wave velocity or high dimensionless wave velocity,the dimensionless lateral power and energy extraction efficiency increased firstly and then decreased with increased wavelength.At moderate wave velocity,the dimensionless lateral power and energy extraction efficiency decreased with the increase in wavelength.
作者
张继化
孙晓晶
黄典贵
ZHANG Jihua;SUN Xiaojing;HUANG Diangui(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《能源研究与信息》
CAS
2021年第1期46-53,共8页
Energy Research and Information
基金
国家自然科学基金资助项目(51536006)
上海市科委基地建设项目(17060502300)。
关键词
获能
无量纲侧向功率
能量利用率
行波波长
无量纲波速
energy extraction
dimensionless power output
energy extraction efficiency
wavelength
dimensionless wave velocity
