摘要
本文所提出的分裂特征线解法,即是二维对流扩散方程的数值解法,主要用于感潮河流的污染计算,为水环境规划提供重要的依据。文中除介绍了分裂解法的计算过程之外,还进行了收敛性,稳定性分析。在变系数的情况下,用能量估计的方法来分析它的稳定性条件。介绍的工程计算实例,验证了方法的准确性,所编制的软件已成为我国长江水质规划的主要工具之一。
The split characteristic method proposed is mainly used for water pollution computation of tidal rivers and it provides a basis for water environment planning.Water pollution computation is in sub- stance to achieve a a numerical solution of the convection-difffusion equation.Besides the algorithm, the analysis of its convergency and stability are also conducted.Computation example is introduced which shows that the method is accurate.The relevant computer program has now become one of the main tools of water quality pianneing for the Yangtze River.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1992年第6期71-79,共9页
Journal of Hohai University(Natural Sciences)
关键词
特征线法
水质污染
收敛
稳定性
convection-diffusion equation
characteristic method
water pollution
tidal river
operatot split method
convergency
stability
