莱氏星星振动模式的研究  

Research on the vibration mode of the Leidenfrost stars

作　　者：李佳林[1] 朱浩宇 张烨[1] 李金华[1] 金光勇[1] LI Jia-lin;ZHU Hao-yu;ZHANG Ye;LI Jin-hua;JIN Guang-yong(School of Science, Changchun University of Science and Technology,Changchun,Jilin 130022,China;School of Opto-Electronic Engineering,Changchun University of Science and Technology,Changchun,Jilin 130022,China)

机构地区：[1]长春理工大学理学院,吉林长春130022 [2]长春理工大学光电工程学院,吉林长春130022

出　　处：《大学物理》2019年第4期45-49,共5页College Physics

基　　金：国家自然科学基金青年基金(41404109);理工科大学生创新创业能力培养模式研究;吉林省教育科学"十三五"规划课题(GH170178);教育部高等学校物理学类专业教学指导委员会资助的项目(JZW-17-GT-05);地方理工院校应用物理学专业电动力学课程教学模式研究(JZW-16-DD-01)资助

摘　　要：基于微扰理论建立加热平面上液滴自激振动的基本模型,研究了莱氏星星的产生条件,以及相关参量如液滴半径、液滴振动频率等因素对莱氏星星振动模式的影响,并对液体周期性振荡模式进行了有限元模拟.通过实验测量出液滴振荡模式个数、振荡频率与液滴半径的关系,与理论分析及仿真结果相符.通过研究莱氏液滴振动模式及自激振荡机制,对液滴在高温表面的复杂动力学过程有了更深入的了解,在金属工业及石油工业等领域有着重要的应用.Based on perturbation theory, a basic model of self-excited vibration of liquid droplets on a heating plane is established. The conditions under which Leidenfrost stars are produced and the influence of related parameters such as droplet radius and droplet vibration frequency on Leidenfrost stars’ vibration modes are studied and the periodic oscillation modes of liquid are simulated by finite element method. The relationship between the number of droplet oscillation modes, oscillation frequency and droplet radius is measured experimentally, which is consistent with the theoretical analysis and simulation results. By studying the droplet vibration mode and self-excited oscillation mechanism, we have a deeper understanding of the complex dynamic process of droplets on the surface of high temperature and have important applications in the fields of metal industry and petroleum industry.

关 键 词：莱氏星星 自激振荡机制 振动模式 有限元模拟 

分 类 号：O4-33[理学—物理] O551.3