李云召 教授 博导 国家级青年人才
西安交通大学 核科学与技术学科
首页 - 云召 Yunzhao Li 李
核反应堆物理教学
中子输运/扩散理论及其数值计算方法
压水堆堆芯物理分析方法研究
压水堆堆芯分析软件NECP-Bamboo研发
西安交通大学，核科学与技术学院
陕西省西安市咸宁西路28号，710049
Email：yunzhao@xjtu.edu.cn
2019年国家技术发明二等奖（4/6）
2019年陕西省教学成果二等奖（4/6）
2013.3至今，西安交通大学 核科学与技术学院 讲师、副教授、教授
2010.10-2012.9，国家公派联合培养博士研究生
美国 西北大学 机械学院
美国 阿贡国家实验室 核工程部
2013.3，获西安交通大学核科学与技术学科博士学位；
2007.7，获西安交通大学核工程与核技术专业学士学位。
项目类别：国家自然科学基金面上项目（主持、在研）
项目名称：连续能量确定论中子输运计算方法研究
执行期限：2020.01-2023.12
项目简介：核反应堆物理分析的核心工具就是中子输运理论，确定论中子输运计算方法因效率高和成本低的优势被广泛用于核反应堆堆芯工程计算。然而，现有确定论方法仍采用最传统的多群近似技术，不得不在预先假定典型中子能谱的条件下制作多群截面数据库，还必须通过复杂的共振计算对互屏、自屏 和核素干涉等效应进行修正，已经成为确定论方法中最大的误差来源。本项目首次提出连续能量确定论中子输运计算方法，彻底消除多群近似带来的诸多问题。该方法通过对非共振能区光滑连续中子通量密度、不可辨共振能区中子通量密度的概率测度和可辨共振能区内陡变连续的中子通量密度进行适应的正交基函数展开，实现精确数值离散；通过设计不同能区间的双向耦合策略和离散代数方程组的迭代计算策略，实现高效数值求解；通过核反应堆堆芯工程计算进行验证与确认。本研究对于中子输运理论的发展和完善有着重要的学术意义，也是核电软件自主创新的重要组成部分，属于前沿性基础研究。
项目类别：国家自然科学基金面上项目（主持、已结题）
项目名称：压水堆堆芯Pin-by-pin燃料管理计算关键技术研究
执行期限：2018.1-2021.12
项目简介：压水堆堆芯燃料管理计算通过模拟核-热-燃耗多物理耦合过程为安全性和经济性分析提供单棒（Pin-by-pin）功率分布。但是，现有压水堆堆芯燃料管理计算方法近似过多、精度受限，严重限制了堆芯安全性和经济性。本项目拟在已有研究的基础上针对下一代堆芯燃料管理计算方法——Pin-by-pin计算开展关键技术研究，具体包括：（1）建立既能区分不同栅元中子泄漏的差异又能避免组件内部中子射流效应重复考虑的非均匀泄漏修正模型；（2）分析栅元状态参数对栅元均匀化少群常数的影响关系，构建能有效处理强历史效应的栅元均匀化少群常数参数化模型；（3）阐明Pin-by-pin多物理耦合机制，确立可靠的Pin-by-pin多物理耦合方式、迭代计算策略和高效并行算法。在我国核电“走出去”战略背景下，本项目的研究对于压水堆堆芯分析理论的发展和完善有着重要的学术意义，也是核电软件自主创新的关键步骤，属于前沿性基础研究。
[01]. Jiewei Yang, Hongchun Wu, Lin Guo, Yunzhao Li*, et al. Validation of NECP-Bamboo with BEAVRS and AP1000 measurements. Nuclear Engineering and Design, 376 (2021):111110.
[02]. Bin Sun, Yunzhao Li*, Liangzhi Cao, et al. Simulations of the source-range detector response for the fuel-loading process of the AP1000 cores. Nuclear Engineering and Design, 372(2021):110995.
[03]. Yunzhao Li*, Wen Yang, Sicheng Wang, et al. A Three-dimensional PWR-core pin-by-pin analysis code NECP-Bamboo2.0. Annals of Nuclear Energy, 144, 2020.
[04]. Jie Li, Yunzhao Li*, Wei Shen, et al. Monte Carlo Neutron-Kinetics Analysis in Continuous Time and Energy. Annals of Nuclear Energy, 141, 2020.
[05]. Yunzhao Li*, Tao He, Boning Liang, et al. Development and verification of PWR-core nuclear design code system NECP-Bamboo: Part III: Bamboo-Transient. Nuclear Engineering and Design, 359, 2020.
[06]. Guowei Hua, Yunzhao Li* and Sicheng Wang. PWR pin-homogenized cross-sections analysis using big-data technology. Progress in Nuclear Energy, 121, 2020.
[07]. Qi Zheng, Wei Shen, Yunzhao Li*, et al. A deterministic-stochastic energy-hybrid method for neutron-transport calculation. Annals of Nuclear Energy, 128:292-299, 2019.
[08]. Yunzhao Li*, Boning Liang, Hongchun Wu, et al. Heterogeneous discontinuity factor treatment in Variational Nodal Method. Annals of Nuclear Energy, 127:341-350, 2019.
[09]. Wen Yang, Hongchun Wu, Yunzhao Li*, et al. Development and verification of PWR-core fuel management calculation code system NECP-Bamboo: Part II Bamboo-Core. Nuclear Engineering and Design, 337:279-290, 2018.
[10]. Yunzhao Li*, Bin Zhang, Qingming He, et al. Development and Verification of PWR-Core Fuel Management Calculation Code System NECP-Bamboo: Part I Bamboo-Lattice. Nuclear Engineering and Design, 335:432-440, 2018.
[11]. Yunzhao Li*, Zhipeng Li, Hongchun Wu, et al. Improved Variational Nodal Method Based on Symmetry Group Theory, Nuclear Science and Engineering, 190:134-155, 2018.
[12]. Wen Yang, Hongchun Wu, Yunzhao Li*, et al. Acceleration of the exponential function expansion nodal SP3 method by multi-group GMRES algorithm for PWR pin-by-pin calculation. Annals of Nuclear Energy, 120:869-879, 2018.
[13]. Boning Liang, Hongchun Wu and Yunzhao Li*. Adaptive expansion order for diffusion Variational Nodal Method. Annals of Nuclear Energy, 117:114-130, 2018.
[14]. Zhitao Xu, Hongchun Wu and Yunzhao Li*, et al. Improved discrete nodal transport method for treating void regions. Annals of Nuclear Energy, 108:172-180, 2018.
[15]. Yunzhao Li*, Bin Zhang, Hongchun Wu, et al. Heterogeneous neutron-leakage model for PWR pin-by-pin calculation. Annals of Nuclear Energy, 110:443-452, 2017.
[16]. Bin Zhang, Hongchun Wu, Yunzhao Li*, et al. Evaluation of Pin-Cell Homogenization Techniques for PWR Pin-by-Pin Calculation. Nuclear Science and Engineering, 186:134-146, 2017.
[17]. Zhipeng Li, Hongchun Wu, Yunzhao Li*, et al. Block-diagonalization of the variational nodal response matrix using the symmetry group theory. Journal of Computational Physics, 351:230-253, 2017.
[18]. Kai Huang, Hongchun Wu, Yunzhao Li*, et al. Depletion system compression method with treatment of decay heat. Progress in Nuclear Energy. 101:476-485, 2017.
[19]. Yongping Wang, Hongchun Wu and Yunzhao Li*. Comparison of two three-dimensional heterogeneous variational nodal methods for PWR control rod cusping effect and pin-by-pin calculation. Progress of Nuclear Energy, 101:370-380, 2017.
[20]. Yongping Wang, Hongchun Wu, Yunzhao Li*, et al. Investigation on generalized Variational Nodal Methods for heterogeneous nodes. Annals of Nuclear Energy. 101:36-48, 2017.
[21]. Yunzhao Li*, Kai Huang, Hongchun Wu, Liangzhi Cao. A depletion system compression method based on quantitative significance analysis. Nuclear Science and Engineering. 187(1):49-69, 2017.
[22]. Zhuo Li, Liangzhi Cao, Hongchun Wu, Yunzhao Li*, et al. Development and validation of a PWR on-line power-distribution monitoring system NECP-ONION. Nuclear Engineering and Design, 322:104-115, 2017.
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