基于动态耦合传热的高低温环境系统升降温特性及其能量传递机理研究

项目名称： 基于动态耦合传热的高低温环境系统升降温特性及其能量传递机理研究

项目编号： No.51476096

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 能源与动力工程

项目作者： 吴静怡

作者单位： 上海交通大学

项目金额： 83万元

中文摘要： 随着电子信息以及航天科技的发展，高低温环境系统的应用越来越广泛，控温要求也越来越高，其在电子器件、仪器仪表、武器装备、航天器等设备研发过程中发挥着越来越重要的作用。通常，高低温环境系统的内部介质和被控对象均需要大温差下的高精度温度控制，因此系统内会同时发生两种以上传热方式，形成导热、自然对流、强制对流、辐射等相互耦合的动态传热过程，尽管有相关的研究，但并不完善，还缺乏深入与必要的理论支持。本课题旨在通过建立三维动态耦合传热研究模型，探索这些耦合传热过程的解耦方法，揭示在较大的温度范围内多种传热方式的动态耦合作用机理，明确升降温过程中所涉及的内部介质、被控对象等在耦合传热作用下的动态流动和传热特性，获得结构参数、物性参数、运行参数与系统内主要流动和传热参数间的相互影响规律。并在此基础上，利用熵产分析、场协同理论等分析其能量传递规律。最后，分析典型高低温环境系统特性，形成相关的设计理论与方法。

中文关键词： 升降温过程；能量传递；耦合传热；动态特性；混合对流

英文摘要： High/low temperature environment system has been widely applied, as the rapid development of electronic and space technology.The temperature control requirements are also getting higher, which plays a more and more important role in the research and design process of electronic devices, precision instruments, weapons, and spacecraft. Usually, in such applications, the internal medium and controlled object require high precision temperature control of large temperature difference, where conjugate heat transfer of conduction, natural convection, forced convection and radiation often occurs. Although there are some available related researches on conjugate heat transfer, it still needs in-depth research to improve and perfect the relevant theory. This subject aims to explore the decoupling method of the coupled conjugate heat transfer process, reveal its dynamic heat transfer mechanism, and obtain the flow and heat transfer characteristics of the internal medium and controlled object. The effects of the configuration parameters, physical parameters and operational parameters on main flow and heat transfer parameters are then investigated. On this basis, the energy transfer mechanism is analyzed using entropy generation and field synergy theories. Finally, the above obtained results are used to optimize the typical high/low temperature environment system, providing advanced design theories and methods.

英文关键词： Cooling/heating process;Energy transfer;Conjugate heat transfer;Dynamic characteristics;Mixed convection