解常微分方程初值问题的BDF并行迭代法 BDF PARALLEL ITERATION FOR SOLVING IVPs OF ODEs 徐绪海 Xu Xuhai 1 first-author 武汉大学数学系 武汉大学数学系 Department of Mathematics,Wuhan University Department of Mathematics,Wuhan University 本文以 BDF 公式为基础方法,通过其自身的适当耦合,形成一类求解常微分方程的大规模按时间并行的迭代法。文中探讨了迭代的收敛性和方法的稳定性,并进行了数值试验。初步结果表明,这类方法为并行处理 Stiff 方程提供了一种可能的途径。 Based on Backward Differentiation Formulas,a class of large scale iteration methods for paral- lelism across time in ordinary differential equations(ODEs) is proposed in this paper.The convergence of the iteration and the stability analysis of the methods are discussed,and the numerical tests are also performed.The results show that the methods seem to be suitable for stiff initial value problems of ODEs. 按空间(或系统)并行 按时间(或方法)并行 迭代法 Stiff 方程 零稳定性 A 稳定性 parallelism across time (method) parallelism across space (system) iteration method stiff equation zero-stability A-stability O242.2;O241.81 国家自然科学基金(61672102) 1992-04-01 2021-04-01 4