A hybrid phonon Monte Carlo-diffusion method for ballistic-diffusive heat conduction in nano- and micro- structures
作者: Han-Ling LiYu-Chao HuaBing-Yang Cao
作者单位: 1Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
刊名: International Journal of Heat and Mass Transfer, 2018, Vol.127 , pp.1014-1022
来源数据库: Elsevier Journal
DOI: 10.1016/j.ijheatmasstransfer.2018.06.080
关键词: Hybrid methodPhonon Monte CarloDiffusion equationBallistic-diffusive heat conduction
英文摘要: Abstract(#br)The existing phonon Monte Carlo (MC) for ballistic-diffusive heat conduction are limited to small and simple structures owing to the huge time cost following with the increasing scale. This article presents a new hybrid phonon Monte Carlo-diffusion method for ballistic-diffusive heat conduction, which successfully characterizes the ballistic effect with significantly reducing the computational cost. Based on the idea that the phonon-boundary scattering mainly affects the regions adjacent to the boundaries when the system is considerably large, the whole system is divided into three zones: the boundary MC zone and the middle diffusion zone, between which is the overlap zone. By using an alternating method and setting virtual phonon bath or specular reflection as the boundary...
全文获取路径: Elsevier  (合作)

  • diffusive 扩散的
  • structures 构筑物
  • method 方法
  • conduction 导电
  • equation 方程
  • ballistic 弹道的
  • phonon 声子
  • diffusion 扩散
  • hybrid 杂种