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对ITER靠近中性束端口的标准屏蔽包层模块进行了热工水力与热应力计算与分析。首先用流体力学方法计算了两种导流管的阻力系数,然后通过合理简化计算了冷却管道系统的水力学,最后根据水力学的计算结果得到温度及应力的分布。分析结果表明,现有的屏蔽包层设计与旧的设计相比,能更有效地降低能量损失、提高冷却效率,满足设计要求。同时需要做局部改进,以确保安全运行。

Thermal hydraulic performance and structural thermal stress analysis for ITER shield blanket module

Hydraulic and thermal analyses of the shield block have been done to examine whether the current design meets the ITER requirements or not.Firstly,the loss coefficient in the flow driver was calculated from individual analysis with CFD code.Then,the pressure drop,velocity and heat transfer coefficient were obtained in the cooling system through a optimised model.Finally,the thermal analysis was carried out based on the hydraulic results with FEM code to examine the distribution of temperature and thermal stress.The analysis results show that the current design is more efficient to reduce the energy loss and improve the cooling efficiency,and satisfy the ITER requirements.Of course,further optimisation or improvement is still needed to ensure safety operation.