稳态及瞬态中子输运模型的JFNK求解方法研究OA北大核心CSTPCD
Jacobian-Free Newton Krylov Methods for Steady and Transient Neutron Transport Models
三维全堆芯pin-by-pin中子输运模型的高效加速方法是核反应堆高精度计算的重点和难点.本文有效融合课题组开发的并行多维离散纵坐标(SN)中子输运程序comeSn和Jacobian-Free Newton Krylov(JFNK)通用求解框架comeJFNK的高效并行特性、鲁棒性和强收敛性,开发了一套三维稳态及瞬态中子输运模型的JFNK并行求解程序comeSn_JFNK.为了提高计算效率,选择中子标通量密度(而非中子角通量密度)作为JFNK全局…查看全部>>
There is an urgent need to reduce the computational costs and improve the convergence rate for the three-dimensional(3D)high-fidelity pin-by-pin full core simulation.Therefore,the efficient and robust acceleration method of 3D large-scale pin-by-pin neutron transport models is a primary objective of high-resolution reactor calculations.In this paper,comeSn_JFNK,an efficient unified parallel solver was developed for 3D steady-state and transient pin-by-pin ne…查看全部>>
张杨奕;张天铖;周夏峰
华中科技大学能源与动力工程学院核工程与核技术系,湖北武汉 430074华中科技大学能源与动力工程学院核工程与核技术系,湖北武汉 430074华中科技大学能源与动力工程学院核工程与核技术系,湖北武汉 430074
核科学
JFNK方法中子输运模型离散纵坐标法稳态和瞬态
Jacobian-free Newton Krylov methodneutron transport modeldiscrete ordinates methodsteady and transient problems
《原子能科学技术》 2024 (6)
1234-1241,8
国家自然科学基金(12005073)
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