摘要
通常的显式平流差分格式,如迎风格式,Lax-Wendroff格式等,均是有条件稳定的,其稳定条件与差分网格的时、空步长有关。本文对线性和拟线性平流方程分别构造了一种计算稳定性好的显式差分格式。对前一格式,本文严格证明了它的无条件稳定性及收敛性,并具有一阶精度;对后一格式,由于非线性方程的限制,本文用数值试验研究了它的计算稳定性。
In this paper, an unconditionally stable explicit finite difference scheme for linear advective equation and a rather stable explicit scheme for quasi-linear advective equation have been constructed,respectively.The strict proofs of consistency, stability and convergence for the former scheme, together with numerical experiment for both schemes have also been presented.
出处
《大气科学》
CSCD
北大核心
1995年第2期252-256,共5页
Chinese Journal of Atmospheric Sciences