中国物理B ›› 2014, Vol. 23 ›› Issue (11): 114401-114401.doi: 10.1088/1674-1056/23/11/114401
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
詹斯琦, 黄维清, 黄桂芳
Zhan Si-Qi (詹斯琦), Huang Wei-Qing (黄维清), Huang Gui-Fang (黄桂芳)
摘要:
Using nonequilibrium molecular dynamics simulations, a comprehensive study of the asymmetric heat conduction in the composite system consisting of the Frenkel-Kontorova (FK) model and Fermi-Pasta-Ulam (FPU) model is conducted. The calculated results show that in a larger system, the rectifying direction can be reversed only by adjusting the thermal bias. Moreover, the rectification reversal depends critically on the system size and the properties of the interface. The mechanisms of the two types of asymmetric heat conduction induced by nonlinearity are discussed. Considering the novel asymmetric heat conduction in the system, it may possess possible applications to manage the thermal rectification in situ directionally without re-building the structure.
中图分类号: (Heat conduction)