摘要
多重网格法是７０年代以来发展起来的用于加速迭代收敛的一种行之有效的方法，它通过采用不同疏密的网格距来“消除”不同频率范围内的误差分量的办法，加速了迭代的收敛速度，具有收敛速度快，收敛精度高以及节省ＣＰＵ时间等特点。将其用于台风路径预报的自适应网格的生成，试验表明，多重网格法比单重网格可提高效率达２０多倍。
The multigrid method which was developed in the 1970s is a powerful tool to accelerate the convergence of iterative It uses different mesh density to eliminate the different frequency component of errors, which accelerate the convergence of iterative It possess of the advantages with fast convergent speed, high convergent accurate and saving CPU Multigrid method was applied to accelerate the generation of adaptive mesh in this paper Experiments show that the multigrid method raises efficiency with more than twenty times compared with single grid
出处
《大气科学》
CSCD
北大核心
1998年第2期191-198,共8页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金
关键词
多重网格法
自适应网格
加速迭代收敛
预报
multigrid method generation of adaptive mesh acceleration of iterative convergence prediction
