HT-7U超导磁体导体摩擦系数的测定  

MEASUREMENT ON THE FRICTION FACTOR OF HT-7U CICC

作　　者：白红宇[1] 毕延芳[1] 翁佩德[1] 马登奎[1] 宋伟容[1] 石磊[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》2002年第3期11-15,28,共6页Cryogenics

基　　金：国家"九五"大科学工程HT 7U超导托卡马克项目资助

摘　　要：HT 7U超导托卡马克的纵场磁体 (TF)和极向场磁体 (PF)都将采用3 8K超临界氦迫流冷却的CICC (CableinConduitConductor)。描述了HT 7U超导托卡马克CICC的摩擦阻力实验。实验采用常温的氮气作工质 ,雷诺数Re范围达到30 0～ 6 0 0 0。利用Katheder经验公式对实验的摩擦阻力系数进行了重新拟合 ,它与经验公式的计算结果存在一定的误差。给出了适于测试导体摩擦阻力系数的经验公式 ,以及导体在工作状态下的摩擦阻力损失。The toroidal field magnets and poloidal field magnets of HT 7U superconducting tokamak are made of Cable in Conduit Conductor(CICC)cooled by forced flow supercritical helium of 3 8 K This paper describes the pressure drop test for CICC samples of HT 7U The conductors are tested with nitrogen at room temperature The Reynolds number starts from 300 and reaches about 6000 in the experiment The experiment data are fitted again in the form of Katheder general formula and there is some difference between them The correlation of friction factor dependent on the Reynolds number are presented The pressure loss of the conductors in operation condition calculated from the correlation are also presented in this paper

关 键 词：测定 摩擦系数 CICC HT-7U 托卡马克装置 摩擦阻力 雷诺数 

分 类 号：TL631.24[核科学技术—核技术及应用] TL622