论文部分内容阅读
ARES是基于离散纵标法开发的一维、二维、三维多群各向异性散射屏蔽输运程序系统,应用于核装置的屏蔽计算和分析。采用菱形差分、theta权重、非连续有限元多种空间离散策略,离散求积组自适应选择,能处理多种边界条件和屏蔽源项。采用首次碰撞源法消除或减轻孤立点源、大空腔模型、强吸收介质等屏蔽问题中的射线效应难题。加速模块采用扩散综合加速、角度多重网格、区域分解的MPI并行,能对不同屏蔽计算模型产生有效的加速效果。采用基准例题和程序对标的方法对部分模块进行初步验证。
ARES is a one-dimensional, two-dimensional and three-dimensional anisotropic scattering shielding transport system based on discrete ordinate method. It is used in shielding calculation and analysis of nuclear devices. Adopting the method of diamond difference, theta weight, discontinuous finite element method and spatial discrete strategy, the discrete quadrature set is adaptively selected to deal with various boundary conditions and shielding source terms. The first collision source method is used to eliminate or alleviate the problem of ray effects in shielding problems such as isolated point sources, large cavity models and strong absorption media. Acceleration module using diffusion acceleration, multi-angle grid, regional decomposition of the parallel MPI, can be calculated on different models to produce an effective acceleration effect. Using the benchmark example and procedure benchmarking method, some modules are preliminarily verified.