基于非稳态法的对流传热综合实验  

Convection Heat Transfer Experiment Based on Unsteady Heat Transfer Method

作　　者：许亚敏[1] XU Yamin(School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《实验室研究与探索》2025年第4期28-31,共4页Research and Exploration In Laboratory

基　　金：2021教育部高等学校能源动力类专业教学研究与实践项目(NSJZW2021Y-16)。

摘　　要：为了研究横置圆柱与周围空气之间的自然对流和强制对流传热特性,设计并实施了一个基于非稳态法的综合实验。在此过程中,搭建了专门的实验台,并开发了数据采集软件以支持实验的进行。该实验采用集中参数模型并遵循能量守恒定律,通过监测物体冷却过程中温度的变化,并利用其热物理性参数,能够迅速且精确地计算出不同风速条件下的平均对流传热系数。进而促进了对自然对流和强制对流传热特性的综合探究。此外,这种模块化、开放式的实验平台以及创新的实践教学方案不仅极大地提高了学生的学习兴趣,还激励他们主动参与到科学研究当中去,有助于增强学生的实践操作能力和团队协作能力。Based on unsteady heat transfer method,we design an experiment about free convection and forced convection heat transfer.We build an experimental platform and compile a data sampling program.This experiment is based on a lumped parameter model and the law of conservation of energy.By measuring the temperature changes of an object during the cooling process and combining it with its thermal properties,the average convective heat transfer coefficient at different wind speeds can be quickly and accurately obtained.And then a comprehensive exploration of the heat transfer characteristics of free convection and forced convection can be carried out.The construction of modular and open experimental platform and advanced practical teaching design can motivate students’initiative in research and exploration,and enhance their practical innovation ability and teamwork spirit.

关 键 词：非稳态传热法 对流换热 集中参数法 实践教学设计 

分 类 号：TK124[动力工程及工程热物理—工程热物理]