近场热记录系统热响应过程的分子动力学仿真  

Molecular Dynamics Simulation of Thermal Response Process of Near-Field Thermal Storage System

作　　者：黄灵娟[1] 王玉娟[1] 陈云飞[1] 

机构地区：[1]东南大学机械工程学院,南京210096

出　　处：《传感技术学报》2006年第05A期1641-1644,共4页Chinese Journal of Sensors and Actuators

基　　金：国家重点基础研究发展计划资助(2006CB300404);国家自然科学基金资助(50275026;50475077;50505007;50506008);江苏省自然科学基金资助(BK2005063);教育部博士点基金资助(20050286019)资助

摘　　要：采用非平衡态分子动力学(NEMD)仿真了近场热记录系统的热响应过程.对探针施加不同的作用力时,随着作用力的增加,基体的热响应明显加快,系统达到热平衡所需时间相应减少,可有效提高热机械数据存储速率.采用数值差分方法对一维探针-基体的传热模型进行数值求解,数值解和分子动力学模拟结果总体趋势基本吻合.The near-field thermal storage system＇s thermal response process is simulated by non-equilibrium molecular dynamics （NEMD）. Different force applied on the probe results in different response time. As the force becomes larger, thermal response of the substrate becomes obviously quicker and the time for the system to achieve the thermal equilibrium reduces correspondingly, which improves reading and writing rate of the thermomechanical data storage. The numerical solution of one＇dimensional probe-sample heat transfer model is obtained with the numerical difference method, which agrees well with the molecular dynamics simulation results.

关 键 词：热响应 非平衡态 分子动力学 数值差分 

分 类 号：TK124[动力工程及工程热物理—工程热物理]