Thermal wave propagation through nanofilms in ballistic-diffusive regime by Monte Carlo simulations
作者: Dao-Sheng TangYu-Chao HuaBing-Yang Cao
作者单位: 1Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, PR China
刊名: International Journal of Thermal Sciences, 2016, Vol.109 , pp.81-89
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijthermalsci.2016.05.030
关键词: Thermal waveBallistic-diffusive transportMonte Carlo simulationBoundary phonon emissionOvershooting phenomena
英文摘要: Abstract(#br)Investigations on ultrafast heat conduction are of great importance not only for the theoretical understanding of thermal transport, but also the applications of ultra-short pulse laser including the micromachining and the measurements of thermophysical properties of micro/nanomaterials where phonons propagate in ballistic-diffusive regime. In this work, the thermal wave in phonon ballistic-diffusive regime is systematically studied by the Monte Carlo (MC) simulation method. Simulation results show significant influence of the phonon boundary emission conditions, i.e. boundary conditions of phonon Boltzmann transport equation (BTE), on the thermal wave propagation. The MC simulations with phonon Lambert emission (LE) predict a dispersive dissipative thermal wave while the MC...
全文获取路径: Elsevier  (合作)
影响因子:2.47 (2012)

  • diffusive 扩散的
  • ballistic 弹道的
  • propagation 传播
  • regime 状况
  • through 经过