Abstract In this paper, computational fluid dynamics (CFD) software ANSYS Fluent was used to study the influence of Laser Entrance Holes (LEHs) film transmissivity on the indirect-drive cryogenic inertial confinement fusion (ICF) targets after the shield is removed. The results show that when LEHs film transmissivity (tLEHs) increases from 0.01 to 1 under the steady-state calculation, the maximum temperature difference on the target surface increases by nearly 141 %. The influence of tLEHs on the target surface temperature field is particularly obvious after the shield is opened. The maximum target surface temperature rises to 3140 mK and the maximum surface temperature difference is 130 mK at the dynamic equilibrium state. However, the internal temperature field of the hohlraum is not significantly affected by Infrared radiation (IR) for tLEHs = 0.01. The maximum temperature increment on the target surface is 90 mK, and the maximum surface temperature difference is only 2.5 mK. Low LEHs film transmissivity can effectively restrain the influence of environmental radiation and keep the temperature field in a stable state in the hohlraum.

中文翻译：

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屏蔽层去除后LEHs薄膜透射率对球形空腔低温靶材的影响

摘要 本文利用计算流体动力学（CFD）软件ANSYS Fluent，研究了激光入孔（LEHs）薄膜透射率对屏蔽拆除后间接驱动低温惯性约束聚变（ICF）目标的影响。结果表明，在稳态计算下，当LEHs薄膜透射率（tLEHs）从0.01增加到1时，靶材表面的最大温差增加了近141%。tLEHs对目标表面温度场的影响在屏蔽打开后尤为明显。在动态平衡状态下，最大目标表面温度升至 3140 mK，最大表面温差为 130 mK。然而，当 tLEHs = 0.01 时，空腔的内部温度场不受红外辐射 (IR) 的显着影响。目标表面最大温升为90 mK，最大表面温差仅为2.5 mK。低LEHs薄膜透光率能有效抑制环境辐射的影响，使黑腔内的温度场保持稳定。