分形介质导热问题中声子的作用  

THE ROLE OF PHONON IN HEAT CONDUCTION OF FRACTAL MEDIUM

作　　者：刘建科[1] 

机构地区：[1]陕西科技大学理学院,陕西咸阳712081

出　　处：《陕西科技大学学报（自然科学版）》2003年第5期49-52,共4页Journal of Shaanxi University of Science & Technology

摘　　要：从声子的性质出发阐述了声子在分形介质导热问题中的作用,得出了以下结论:分形介质中声子导热的频域为Al～Aξ,而不再象均匀介质那样为0～ωm;同一材料组分时分形介质的定容比热要小于均匀介质的定容比热。Theoretically based on the nature of phonon and its role in heat conduction of fractal medium. The conclusion is drawn as follows :the heat-conduction frequency scope of phonon in fractal medium is Al-Aζ, not like that in uniform medium (0-ωm). For the uniform mediums of same material , the specific heat at constant volume is less greater than that of uniform medium . The conclusion tallies with the result of experiments.

关 键 词：声子 分形介质 导热 定容比热 性质 

分 类 号：O482[理学—固体物理]