Open AccessHeat conduction in one-dimensional systems with damping
Author(s) -
Li Xin-Xia,
Tang Yi
Publication year - 2006
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.55.6556
Subject(s) - thermal conduction , dissipation , perturbation (astronomy) , thermal conductivity , integrable system , materials science , thermal , condensed matter physics , complex system , harmonic , physics , mechanics , thermodynamics , quantum mechanics , computer science , artificial intelligence , mathematical physics
By making use of the method of molecular dynamics, we study the behaviors of heat conduction in one-dimensional systems under the influence of damping. The results show that when the integrability of the systems is destroyed by the damping, linear temperature profiles appear even in the harmonic lattices. Weak damping acts as a sort of perturbation in nonintegable systems and does not substantially change their temperature profiles and the thermal conductivity, while it causes essential change in integrable systems. However, in the case of strong damping, because of the excessive dissipation of energy, temperature profiles in a sunken shape and the convergent thermal conductivity appear.