Thermal-hydraulic and thermo-mechanical analyses of current ITER shield blanket design

The current design of ITER shield blanket is introduced,and much attention is paid to the comparison between 2004 DDD design and the current design in the structure of first wall and shield block.Besides,the thermal-hydraulic analyses and thermo-mechanical analyses of shield block of No.8 blanket module was performed.The results of analyses indicate that the maximum temperature of No.8 blanket module is below 200?C and its maximum Von-Mise stress is less than 200MPa,thus the current design of the shield block satisfies with the ITER related requirements,except that the pressure drop is a little bit large,coming up to 0.44MPa.Moreover,the uncovered shield block frontal surface exposed to plasmas heat flux was studied,and its ability of the loaded heat flux was evaluated and optimized based on the result of thermo-mechanical analysis to get a reasonable design pattern.