NUMERICAL STUDY ON DEFECT-INDUCED ASYMMETRIC HEAT CONDUCTION
Heat conduction in one-dimensional (1D) nonlinear lattices is investigated to evaluate the performance of defective low dimensional materials as thermal rectifiers. The thermal rectifier allows heat to conduct only in a single direction and not in the opposite direction even when the temperature gradient is reversed. If such thermal device is realized, a variety of innovations should occur in thermal engineering. Our simulation treats twosegmental system of different spring constants to simulate the asymmetric distribution of lattice defects. It is found that the thermal rectification depends on spring constant, mean temperature and temperature gradient. The performance limit of thermal rectification of defectinduced materials is also discussed.
Hiroyuki Hayashi Koji Takahashi
Dept. Aeronautics and Astronautics Kyushu University Fukuoka, Japan, 819-0395
国际会议
The Ninth Asian Thermophysical Properties Conference(第九届亚洲热物理性能会议 ATPC 2010)
北京
英文
827-832
2010-10-19（万方平台首次上网日期，不代表论文的发表时间）