不等波长行波运动的能量吸收特性研究  

Study on Energy Absorption Characteristics of Unequal Wavelength Traveling Wave Motion

作　　者：李彪 齐明亮 黄典贵[1] LI Biao;QI Ming-liang;HUANG Dian-gui(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,China,Post Code:200093)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《热能动力工程》2023年第10期148-157,共10页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目(52036005)。

摘　　要：为改善做行波运动的行波板的能量吸收特性,基于计算流体力学方法,分析了波长系数(-0.1~0.3)和无量纲振幅(0.1~0.2)对做不等波长行波运动行波板能量吸收特性的影响。结果表明:相比于做等波长行波运动,做不等波长行波运动行波板的能量吸收效果更好;在较小的无量纲振幅下,沿流向线性增大波长,可以提高能量吸收效率;随着波长系数增大,能量吸收效率先升高再降低,存在最佳波长系数使得能量吸收效率最高达到69%;在较大的无量纲振幅下,随着波长系数的增大,能量吸收效率先降低再升高。In order to improve the energy absorption characteristics of traveling wave plates,based on computational fluid dynamics(CFD)method,the effects of wavelength coefficients of-0.1 to 0.3 and dimensionless amplitudes of 0.1 to 0.2 on the energy absorption characteristics of traveling wave plates with unequal wavelengths were analyzed.The results show that the traveling wave plate with unequal wavelength traveling wave motion can achieve better energy absorption effect than the traveling wave plate with equal wavelength traveling wave motion;the energy absorption efficiency can be improved by linearly increasing the wavelength along the flow direction at a small dimensionless amplitude;with the increase of the wavelength coefficient,the energy absorption efficiency first increases and then decreases,and there is an optimal wavelength coefficient to maximize the energy absorption efficiency,which can reach 69%at most;in the case of large dimensionless amplitude,with the increase of the wavelength coefficient,the energy absorption efficiency first decreases and then increases.

关 键 词：行波运动 不等波长 行波板 无量纲振幅 能量吸收效率 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]