高技术通讯2025，Vol.35Issue(6)：662-674,13.DOI:10.3772/j.issn.1002-0470.2025.06.010
水平振动下近壁颗粒动力学特性研究
Dynamic characteristics of near-wall particles under horizontal vibration
摘要
Abstract
The interaction between particles and the wall surface has an important influence on the motion of particle flow,and mastering the motion law of near-wall particles is the basis for establishing the wall boundary model of particle dynamics.In this paper,the motion of spherical particles on a horizontal simple harmonic vibration random rough wall surface is measured experimentally,and the two-dimensional translational velocity and three-dimensional rotational velocity of the particles are obtained through two-dimensional image information,and the particle motion characteristics under different wall vibration frequencies,particle diameters,and monolayer particle concentrations are analyzed statistically.The results show that the velocity distribution of particles along the driving direction is bi-modal or multimodal Gaussian,while the velocity distribution in other directions is unimodal Gaussian;the particle advective and rotational energy distributions are in contradiction with the equalization theorem and have strong ani-sotropy.Combined with the previous theories,this paper proposes the relational equation of energy distribution with correction coefficients.关键词
颗粒-壁面相互作用/水平振动/颗粒旋转速度/速度分布函数/动能各向异性Key words
solid-wall interactions/horizontal vibration/particle rotational velocity/velocity distribution function/kinetic energy anisotropy引用本文复制引用
曾霖,赵云华..水平振动下近壁颗粒动力学特性研究[J].高技术通讯,2025,35(6):662-674,13.基金项目
国家自然科学基金面上项目(51976194)资助. （51976194）
