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大型低温氦制冷系统仿真作为系统设计、分析、优化以及控制系统调试、创新的工具日益受到重视。仿真的可信度依赖于物性和模型的准确。首先简要地介绍氦物性参数的计算方法,比较了不同方法的适用范围和优缺点,为物性选取工作提供指导。其次,概述大型低温系统单元建模的方式以及常用流程模拟算法。以国内外各个仿真模拟器的建立和完善过程为主线,重点综述了近10年来氦低温系统仿真的研究进展和突出成就,并指出了各个仿真模拟器的特点和存在的问题。最后,总结了目前仿真的主要研究内容并对未来的发展方向进行预测。提供了大型低温系统中应用动态仿真的整体思路,为今后的科研工作提供指导。
Large-scale low-temperature helium refrigeration system simulation as a system design, analysis, optimization and control system debugging, more and more attention to innovative tools. The credibility of the simulation depends on the physical properties and the accuracy of the model. First of all, the calculation method of helium physical parameters is briefly introduced. The applicable range, advantages and disadvantages of different methods are compared to provide guidance for physical property selection. Secondly, it summarizes the ways of unit modeling of large-scale cryogenic system and the common process simulation algorithms. With the establishment and perfection of simulation simulators at home and abroad as the main line, the research progress and outstanding achievements of helium cryogenic system simulation in recent 10 years are reviewed. The characteristics and existing problems of each simulation simulator are also pointed out. Finally, the main research content of the current simulation is summarized and the future development direction is predicted. It provides the general idea of applying dynamic simulation in large cryogenic system and provides guidance for future scientific research.