TY - JOUR A2 - Tiselj, Iztok AU - Wu, Yingjie AU - Liu, Baokun AU - Zhang, Han AU - Guo, Jiong AU - Li, Fu AU - Niu, Jinlin AU - Wang, Yizhen AU - Cui, Menglei PY - 2020 DA - 2020/11/03 TI - A New Precursor Integral Method for Solving Space-Dependent Kinetic Equations in Neutronic and Thermal-Hydraulic Coupling System SP - 8265146 VL - 2020 AB - The accurate prediction of the neutronic and thermal-hydraulic coupling system transient behavior is important in nuclear reactor safety analysis, where a large-scale nonlinear coupling system with strong stiffness should be solved efficiently.高性能数值技术解决延迟中子先质方程是一个关键题在这项工作中,建议使用新先质集成法并配以指数近似法和广用Taylor近似集成法比较指数近似值和Taylor近似值误差分析比较时间控制技术基于通量指数近似程序用2D动能基准测试并使用高效无Jacobian-Krylov方法简化高温气冷堆多功能模块多物理问题结果显示,选择适当的通量近似前体集成法可提高比传统方法的效率和精度HTR-PM模型计算时间压缩到一九分之一时使用指数集法并适应时间技术时精度相同SN-1687-6075UR-https://doi.org/101155/2086146DO-101155/2086146JF-核装置科技PB-HindawiKW-ER