| 摘要: |
| 在惯性约束核聚变实验中，为了保证良好的温控效果，TMP套筒上的温度分布需要良好地映射至金腔表面。本文分别对半腔式和全腔式TMP进行数值仿真，研究了氦气压力、凸环宽度和加热带功率等因素对TMP温控效果的影响。结果表明：在相同热边界载荷下，相比于全腔式TMP，半腔式TMP可以实现更大的温度调控范围，具有更好的温控效果；增加腔内氦气压力在一定程度上可以改善TMP的温控效果，但改善程度很小；增设凸环可以明显改善TMP温控效果，且随着凸环宽度的增大，TMP的温控效果随之增强；随着加热带功率的增大，半腔式和全腔式TMP内的金腔内表面最大温差的增速分别为0.38、0.25 K/W，表明半腔式TMP对加热带功率变化更加敏感，具有更好的温控效果。 |
| 关键词: 惯性约束核聚变 冷冻靶 温控特性 数值模拟 |
| DOI： |
| Received:February 21, 2022Revised:April 29, 2022 |
| 基金项目:国家自然科学基金（52176021）资助项目。 |
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| Numerical Comparisons of Temperature-controlling Characteristics between Semi- and Holo-TMP Structures in Cryotarget System |
|
Guo Fucheng, Li Yanzhong, Li Cui
|
| (School of Energy and Power Engineering, Xi’an Jiaotong University) |
| Abstract: |
| The temperature-controlling characteristics of a thermal mechanical package (TMP) are crucial to the experiments in inertial confinement fusion. This study addresses the semi- and holo-TMP structures. The influences of relative factors, including the pressure of helium inside the hohlraum, width of bulge loops, and power of heat rings, on the temperature-controlling characteristics of TMP are investigated systematically. The results show that a semi-TMP structure has a better temperature-control performance than a holo-structure under the same thermal conditions. Increasing the pressure of helium makes a positive but limited contribution to the TMP temperature-control effect. The presence of bulge loops enhances the heat transfer between the TMP and gold hohlraum, thereby improving the temperature-control performance. In addition, the widths of the bulge loops slightly improve the temperature-controlling effect. The temperature response of the gold hohlraum to variations in the heat ring power exhibits clear differences between the semi- and holo-TMP structures. As the heating power increases, the maximum temperature difference of the gold hohlraum increases linearly at a rate of 0.38 K/W and 0.25 K/W for the semi- and the holo-TMP structures, respectively, which indicates a better temperature-controlling effect on the semi-TMP structure. |
| Key words: inertial confinement fusion cryotarget temperature-controlling characteristics numerical simulation |
