原子能科学技术2018，Vol.52Issue(3)：553-561,9.DOI:10.7538/yzk.2017.youxian.0306
冷却气体对黑腔系统温度场影响数值模拟
Numerical Simulation of Cooling Gas Effect on Temperature Distribution inside Cryotarget System
摘要
Abstract
In order to study the effect of cooling gas on the temperature distribution around the capsule and the hohlraum,CFD simulation was conducted to obtain the maximum temperature gradient on the deuterium-tritium capsule surface and the gas flow field when the hohlraum filled in different helium content gaseous mixtures under different gas pressures.In addition,the variations of the average temperature and the maximum temperature gradient on the capsule surface were recorded under the condition that the cooling walls were applied to thermal oscillation.The results indicate that increasing the gas pressure or decreasing the helium content enhances the natural convection difference between the upper and lower gas regions,which results in the worse temperature gradient on the capsule surface.While,decreasing the helium content in the cooling gas which gets lower thermal conductivity and higher specific heat reduces the influence of cooling wall temperature fluctuating on the temperature distribution around capsule.关键词
冷冻靶/冷却气体/气体压力/氦气含量/自然对流Key words
cryogenic capsule/cooling gas/gas pressure/helium content/natural convection分类
数理科学引用本文复制引用
陈鹏玮,厉彦忠,辛毅,丁岚,李翠..冷却气体对黑腔系统温度场影响数值模拟[J].原子能科学技术,2018,52(3):553-561,9.基金项目
国家科技重大专项资助项目 （）
国家自然科学基金资助项目(51506158) （51506158）
