中文摘要：

本文基于稳态流型采用数值模拟方法计算了加速器驱动次临界堆系统ADS无窗散裂靶的稳态热输运过程,得到了不同能量质子束作用下铅铋合金液体和蒸气中的稳态温度分布。对上述温度场结果进行比较表明,在相同流强下,温度场分布形状随能量改变,最高温度亦随之改变,并且质子束能量越高,最高温度就越大。在250 MeV能量质子束作用下,高温区在气相部分,随着质子束能量增大,高温区转移到质子束轰击铅铋合金液相位置。上述热输运数值模拟结果为ADS无窗散裂靶设计和优化提供了可靠的依据,特别是对未来中国ADS的研究和应用具有重要的学术和应用参考价值。

英文摘要：

This paper calculates the steady state heat transport process of the accelerator-driven subcritical system（ADS） windowless spallation target by numerical simulation based on the steadystate flow pattern,and obtains steady-state temperature distribution in the lead-bismuth eutectic（LBE） liquid and vapor at different proton beam energy.The results show that the shape of temperature distribution varies with the proton beam energy when the intensity is the same,as well as the maximum temperature.What＇s more,the higher the proton beam energy is,the higher the maximum temperature will be.The high temperature zone is in the area of vapor phase when the proton beam energy is 250 MeV.The position of high temperature zone transfers to the liquid phase with the proton beam energy increases.The study of the heat transfer process plays an important role and can be applied to the further design and optimization of the ADS windowless spallation target.