调用氦物性程序对10K下透平喷嘴的气动性进行数值模拟及分析  

Aerodynamic numerical simulation and analysis of flow in turbo expander nozzle below 10K by calling helium properties program

作　　者：张云志[1] 邱立龙[1] 白红宇[1] 傅豹[1] 王学敏[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《低温工程》2009年第2期20-25,共6页Cryogenics

基　　金：EAST国家大科学工程项目(计投资(1998)1303号)

摘　　要：针对EAST用俄制氦透平D在2008年5月至8月一轮实验中出现的抱轴问题,采用Fluent数值模拟的方法调用氦物性Fortran程序,按透平D喷嘴环的设计工况对其流场进行模拟,并通过得到的近真实流场,分析了因为加工偏差引起的流场不均匀性程度,从而验证了喷嘴环的加工问题也是引起透平工作稳定性的一个重要原因。In order to solve the journal sticking problem occurred in the experiment for Russian manufacturing turbo expander D of EAST from May to August, 2008, a Fluent numerical simulation was adopted to simulate the real pressure, temperature and velocity of turbo expander D by calling a helium Fortran program. By analyzing the results, it was found that the flow field distribution was non-uniform, which was one of the most important factors causing the turbo expander D working unsteady. On this basis, some significant advices on nozzle design of helium turbo expanders were given.

关 键 词：数值模拟 FORTRAN 透平 喷嘴环 加工 不均匀性 

分 类 号：TB663[一般工业技术—制冷工程]