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2D/1D耦合方法求解三维输运方程具有快速、精确的优点;通常的2D/1D耦合方法利用轴向和角度方面的并行度,不能进行大规模并行计算。本研究在三维粗网有限差分(CMFD)框架下,径向采用区域分解并行的矩阵特征线方法(MOC),轴向采用扩散有限差分,综合利用2D/1D耦合方法径向和轴向的并行度,基于消息传递接口(MPI)实现大规模的并行计算,编写了Tiger-3D程序。数值验证表明,Tiger-3D程序具有良好的计算精度和较高的计算效率。
The 2D / 1D coupling method has the advantages of fast and accurate in solving the 3D transport equation. The usual 2D / 1D coupling method can not make large-scale parallel computation because of the parallelism in the axial and angular directions. In the framework of CMFD, this paper uses the regional decomposition parallel matrix feature line (MOC) method in the radial direction and the diffusion finite difference method in the axial direction. By using the 2D / 1D coupling method, the radial and axial parallelism Degree, based on the message passing interface (MPI) to achieve large-scale parallel computing, write Tiger-3D program. Numerical verification shows that the Tiger-3D program has good calculation accuracy and high computational efficiency.