蒙特卡罗法用于机械制冷机污染传输特性的仿真计算  

The simulation of contamination transfer mechanism of mechanical cryocooler using monte carlo method

作　　者：杨宝玉[1] 吴亦农[1] 府华[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《低温与超导》2006年第2期105-108,117,共5页Cryogenics and Superconductivity

基　　金：国家自然科学基金(50376069)

摘　　要：为了优化结构设计和建立标准的污染控制体系来提高机械制冷机的运行寿命,需要深入研究污染气体在制冷机管道内的传输机理。采用直接模拟蒙特卡罗(DSMC)方法对污染气体的传质过程进行理论仿真,设计编写软件程序,计算了分子流状态下制冷机内污染气体分子通过圆管和环形管路等微通道的传输几率。得到关键管道的传输几率小于3%,并比较了不同结构尺寸管路的传输几率。In order to optimize the structure design and achieve the standard contamination control procedures of mechanical cryocooler, the transfer mechanism of contamination gas in the cooler had been deeply studied. The mass transfer process of contamination gas was theoretically simulated by Direct Simulated Monte Carlo method, a series of program had been developed to calculate the transfer probability of gas molecular in some complicated pipelines of cooler, the value is less than 3 percent in some crucial parts, and compared the transfer probability of various pipes with different dimension.

关 键 词：机械制冷机 污染 传质 蒙特卡罗方法 传输几率 

分 类 号：TP722.5[自动化与计算机技术—检测技术与自动化装置] O242.1[自动化与计算机技术—控制科学与工程]