G-M 制冷机常规蓄冷器内部动态过程的数值模拟  

SIMULATION OF THE DYNAMIC PROGRESS IN THE HIGH TEMPERATURE REGENERATOR OF A GM REFRIGERATOR

作　　者：王莉[1] 徐向东[1] 张亮[1] 

机构地区：[1]中科院低温技术实验中心

出　　处：《低温工程》1998年第2期7-13,共7页Cryogenics

基　　金：国家自然科学基金

摘　　要：运用不同以往的数值方法，初步简便地模拟了ＧＭ制冷机常规蓄冷器内部的动态过程，得出了其内部温度、质量流率分布规律。详细讨论了不同的蓄冷器结构参数对ＧＭ制冷机制冷性能的影响，提出合理地设计ＧＭ制冷机常规蓄冷器的措施，已有成功机型为结论提供了依据。An improved numerical method for the high temperature regenerator of a GM refrigerator to simulate its dynamic process and performance has been developed.A variety of factors,such as variable properties of regenerator materials and helium,existence of helium in a void space of a regenerator and so on,were taken into account in the model.It can predict the distributions of temperature and mass flow respectively with time in the regenerator and so on.Some analyses are made to study the effects of structure and operation parameters on the regenerator performance in detail.The predicted values by computer agree well with experimental results.The numerical method can give useful information to design a high efficiency regenerator.

关 键 词：G-M制冷机 蓄冷器 数值模拟 动态过程 制冷性能 

分 类 号：TB651[一般工业技术—制冷工程]