2013•Journal of Tsinghua University(Science and Technology)Requires access
Numerical simulations of the temperature field in the breeding sub-module of the ITER Chinese helium cooled solid breeder test blanket module
Heng Xie
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Abstract
The temperature distributions were predicted in the helium coolant gas and the Be pebble bed as well as the Li4SiO4 pebble bed in the breeding sub-module of the International Thermonuclear Experimental Reactor(ITER) Chinese helium cooled solid breeder test blanket module(CH HCSB TBM) used in the ITER.The two-dimensional temperature field was predicted using the computational fluid dynamics code Fluent.The results show that the highest temperature in the Li4SiO4 pebble bed exceeds the design parameters.Since the thermal conductivity of Li4SiO4 is quite poor,the temperatures can be reduced by replacing Li4SiO4 with Li2TiO3 and Li2ZrO3 or by dividing the Li4SiO4 pebble bed into 3 equal parts.These thermal-hydraulic design improvements all satisfy the design parameters.