Abstract:

Preliminary design for HCSB TBM shield was introduced, and much attention is paid to the comparison between conception design review (CDR) design and the current design, the thermal-hydraulic analyses of TBM shield was performed. The results of analyses indicate that the maximum temperature of TBM shield is about 246.9℃ at the bottom key. The velocity, pressure and wall heat transfer coefficient are all well below the allowable values. Moreover, a panel is added to reduce the temperature of bottom key based on the result of thermal-hydraulic analysis.

Key words: ITER, HCCB TBM, Thermal analysis, Hydraulic analysis, Fluid solid coupling

摘要：

介绍了HCCB TBM屏蔽块初步设计阶段的最新设计，对比了概念设计评审阶段设计方案在结构上的差别，并对其进行了热工水力的分析。结果表明：温度最高处位于下防剪切键顶端，为246.9℃。速度、压强和对流换热系数均满足ITER标准。另外，根据温度分析计算结果，在下防剪切键处增加了挡板，其对于防剪切键的温度降低有显著效果。

关键词: ITER, HCCB TBM；流体分析；传热分析；流固耦合