刘平安,杨梦淇,张亚萍,周昊,吴致浩,王英玮

• 1:中国石油大学(华东)理学院

摘要(Abstract)：

针对传统稳态法难以测量低温物体导热系数的问题，本文设计了基于Pasco系统的导热系数测量装置，且能够获取冰的导热系数随着自身温度改变的规律。装置采用功率恒定的平面热源对温度稳定的冰块一侧进行扰动，当热量在介质中传导时，发现距离扰动面一定深度的冰面温度变化满足与导热系数相关的边界条件。基于这一特性，对温度稳定的冰块中心平面采用常功率加热片进行加热，应用Pasco系统检测加热片平面和一定深度的冰面温度随加热时间的变化规律，并借助高斯误差补函数的一次积分获得导热系数与冰块温度的关系曲线，给出研究冰的导热系数的实验新方案。COMSOL仿真结果表明，该方法实时测量数据准确，可靠性高，具有良好的实验推广和应用价值。

关键词(KeyWords)： 导热系数;低温测量;Pasco系统;COMSOL仿真

Abstract:

Keywords:

基金项目(Foundation): 教育部高等高校大学物理课程教学指导委员会教学研究项目(DWJZW202228hd);; 山东省本科高校教学改革研究项目(Z2022052);; 省级大学生创新创业训练计划项目(S202310425069)

作者(Author): 刘平安,杨梦淇,张亚萍,周昊,吴致浩,王英玮

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