CAJ | 학술논문

基于CFD软件平台，针对中国HCCB-TBM氚增殖区球床热工水力学特性开展3维数值模拟研究。依据ITER实际运行工况给出吹氚氦气和结构冷却剂氦气在硅酸锂球床内的流动与传热特性，获取球床内详细的速度分布、温度分布和压力降。计算结果表明：圆球的排列方式影响球床内氦气流场和球床的最高温度；ITER运行工况下HCCB-TBM增殖区硅酸锂小球及其壁面的最高温度不会超过设计温度。研究结果为增殖区热工水力学方案的设计验证和下一步开展实验提供参考。
기우CFD연건평태，침대중국HCCB-TBM천증식구구상열공수역학특성개전3유수치모의연구。의거ITER실제운행공황급출취천양기화결구냉각제양기재규산리구상내적류동여전열특성，획취구상내상세적속도분포、온도분포화압력강。계산결과표명：원구적배렬방식영향구상내양기류장화구상적최고온도；ITER운행공황하HCCB-TBM증식구규산리소구급기벽면적최고온도불회초과설계온도。연구결과위증식구열공수역학방안적설계험증화하일보개전실험제공삼고。
Based on the CFD software platform FLUENT, three-dimensional numerical simulation was carried out for thermal hydraulics characteristics of the breeder zone pebble bed for China helium cooled ceramic breeder-test blanket module (HCCB-TBM). According the actual operating conditions of ITER, such as the nuclear heat distributions in the breeder zone and structure wall, the inlet velocities and temperatures of purge gas helium and coolant helium, the flow field and heat transfer characteristics of the purge gas helium carrying the tritium flowing over the lithium silicate pebble bed were obtained, and the temperature distribution and pressure drop were presented as well. The calculation results show that the permutation mode of the lithium silicate spheres in the pebble bed have an influence on the flow field and the maximum temperature of the pebble-bed. The maximum temperature of the pebble-bed and the structure wall does not exceed the designed temperature under the ITER operating conditions. The results will be benefit for the design verification of the breeder zone thermal hydraulics scheme and improving the following experiments of the purge gas.