Irreversibility and Action of the Heat Conduction Process
作者: Yu-Chao HuaTiao ZhaoZeng-Yuan Guo
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: Entropy, 2018, Vol.20 (3)
来源数据库: Directory of Open Access Journals
DOI: 10.3390/e20030206
关键词: IrreversibilityHeat conductionLyapunov functionLeast action principleEntransyEntropy
原始语种摘要: Irreversibility (that is, the “one-sidedness” of time) of a physical process can be characterized by using Lyapunov functions in the modern theory of stability. In this theoretical framework, entropy and its production rate have been generally regarded as Lyapunov functions in order to measure the irreversibility of various physical processes. In fact, the Lyapunov function is not always unique. In the represent work, a rigorous proof is given that the entransy and its dissipation rate can also serve as Lyapunov functions associated with the irreversibility of the heat conduction process without the conversion between heat and work. In addition, the variation of the entransy dissipation rate can lead to Fourier’s heat conduction law, while the entropy production rate cannot. This shows...
全文获取路径: DOAJ  (合作)

  • entropy 平均信息量
  • process 过程
  • production 生产
  • action 行为
  • conduction 导电
  • physical 物理的
  • generally 通常
  • dissipation 耗散
  • always 总是
  • function 函数