【摘要】 对于一类奇异摄动问题,基于ShiShkin网格采用迎风差分格式进行离散,给出了求解离散代数系统的两网格算法,并对算法进行了理论分析.数值实验表明,两网格算法提高了奇异摄动问题求解的效率.更多还原

【Abstract】 For a kind of singularly perturbed problems,an upwind difference scheme on the ShiShkin mesh is used for discretization.A two-grid algorithm for the discrete algebra system is investigated.And the analysis of the proposed algorithm is carried out.The numerical experiments show that the two-grid algorithm has improved the efficiency of solving the singular perturbed problem.更多还原