D232 熱波動における熱流束の分子動力学的研究(分子動力学1)

抄録

Heat flux equations in molecular dynamics have been applied almost for the evaluation of thermal diffusion. However, the equations have never been applied for condition of propagation of the heat wave. In this study, we discuss that two heat flux equations can be applied for heat wave. The solid model is assumed to consist of particles with Lennard-Jones potential. Internal and external heat flux evaluations at heat wave were different from ones at thermal diffusion. It was found that heat flux including absolute velocity represents behavior that is different from the internal and external heat flux for condition of propagation of the heat wave. In order to analyze heat flux at heat wave with time average, we must have the model which has larger sub regions than width of heat wave.