Investigation on the Relation of CICC Stability Margin to Mass Flow Rate and Operating Temperature of Helium  

作　　者：方进 翁佩德 陈灼民 武松涛 李保增 毕延芳 李洪强 

出　　处：《Plasma Science and Technology》2001年第2期715-720,共6页等离子体科学和技术（英文版）

摘　　要：To circulate supercritical helium, a differential pressure between inlet and outlet has to be applied. A differential pressure can be generated by a refrigerating compressor which forces the coolant through cooling channels. A differential pressure corresponds to a constant now rate in a constant length. The coolant flow rate was set at different values from 0.2 to 2.8 g/s. The numerical simulation was performed using the l-D mathematical model (Gandalf). The results of the experiment and simulation show that the larger the coolant now rate, the higher the stability margin is. It is also showed that the shorter the cooling channel, the higher the stability margin is with the same coolant flow rate. Meanwhile, we also introduce the influence Of temperature and pressure on the stability margin of CICC.To circulate supercritical helium, a differential pressure between inlet and outlet has to be applied. A differential pressure can be generated by a refrigerating compressor which forces the coolant through cooling channels. A differential pressure corresponds to a constant now rate in a constant length. The coolant flow rate was set at different values from 0.2 to 2.8 g/s. The numerical simulation was performed using the l-D mathematical model (Gandalf). The results of the experiment and simulation show that the larger the coolant now rate, the higher the stability margin is. It is also showed that the shorter the cooling channel, the higher the stability margin is with the same coolant flow rate. Meanwhile, we also introduce the influence Of temperature and pressure on the stability margin of CICC.

分 类 号：O534[理学—等离子体物理]