研究了空间区域分解并行矩阵特征线方法(MOC)及相应的多区域耦合并行广义极小残差法(PGMRES)加速算法。该算法基于PETSc并行数值库,直接耦合求解内边界角通量,可大幅提高收敛效率。数值验证结果表明,多区域耦合PGMRES算法具有较高的计算精度和良好的加速效果。 The space domain decomposition parallel matrix feature line method (MOC) and corresponding multi-area coupled parallel generalized minimum residual method (PGMRES) acceleration algorithm are studied. The algorithm is based on PETSc parallel numerical library and directly coupled to solve the inner boundary angular flux, which can greatly improve the convergence efficiency. The numerical results show that the multi-area coupled PGMRES algorithm has high computational accuracy and good accelerating effect.