| ADS瞬态分析中的概率论-确定论耦合方法 |
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| 引用本文： | 郑琪, 吴宏春, 李云召, 等. ADS瞬态分析中的概率论-确定论耦合方法[J]. 强激光与粒子束, 2018, 30: 016001. doi: 10.11884/HPLPB201830.170243 |
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| 作者姓名： | 郑琪 吴宏春 李云召 曹良志 何明涛 |
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| 作者单位： | 西安交通大学 核科学与技术学院, 西安 710049 |
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| 基金项目： | 国家自然科学基金项目11522544 |
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| 摘 要： | 针对加速器驱动次临界系统(ADS)瞬态问题，采用预估校正改进准静态方法(PCQS)处理时空中子动力学方程中的时间自变量，采用蒙特卡罗方法处理相应的空间-角度-能量自变量，重点解决了低次临界度下模拟计算不稳定的问题，验证了TWGIL-Seed-Blanket动力学基准问题和小型模拟ADS问题，得到瞬态过程的功率变化结果，与基于其他方法的程序比较，经初步验证取得了较好结果，证明了该耦合方法可行。
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| 关 键 词： | 加速器驱动次临界系统 瞬态分析 蒙特卡罗方法 预估校正的改进准静态方法 耦合方法 |
| 收稿时间： | 2017-05-27 |
| 修稿时间： | 2017-08-08 |
Coupled stochastic-deterministic method for accelerator-driven subcritical system transient analysis |
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| Zheng Qi, Wu Hongchun, Li Yunzhao, et al. Coupled stochastic-deterministic method for accelerator-driven subcritical system transient analysis[J]. High Power Laser and Particle Beams, 2018, 30: 016001. doi: 10.11884/HPLPB201830.170243 |
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| Authors: | Zheng Qi Wu Hongchun Li Yunzhao Cao Liangzhi He Mingtao |
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| Affiliation: | School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | In accelerator-driven subcritical system (ADS), the transient characteristic is quite different from that of traditional critical system due to its strong external neutron source and its fuel composition for transmutation. This paper presents a coupled stochastic-deterministic method for analysing the transient characteristic of ADS. After comparing various reactor transient calculation methods, predictor-corrector improved quasi-static method was chosen to handle the time variable of neutron space-time kinetics equation. Considering the specific neutron spectrum, Monte Carlo method was used to handle the corresponding spatial, angle and energy variables. The main problem encountered is the Monte Carlo iteration instability for slightly subcritical system. Numerical results demonstrates the effectiveness of the new method. |
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| Keywords: | accelerator-driven subcritical system transient analysis Monte Carlo method predictor-corrector improved quasi-static method coupling method |
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