摘要
文章基于Hermite插值多项式的构造思路,推导出了一维含源扩散方程、扩散反应方程和无源项对流扩散方程的高精度紧致差分格式,并在导出三类特殊方程差分格式的基础上,建立了统一的含源项一维对流扩散方程的差分格式。本文方法是精确的,稳定的,且易应用到其它问题中。数值算例证明了所建立差分格式的有效性。
Based on the Hermite methods, a family of highly accurate upwind type finite dif-ference scheme for the one-dimensional convection-diffusion equations is developed. The method is accurate, stable and can be easily applied to other problems which has been illustrat-ed in the numerical examples.
出处
《宁夏大学学报(自然科学版)》
CAS
1995年第1期30-35,共6页
Journal of Ningxia University(Natural Science Edition)
关键词
对流扩散方程
差分格式
抑风效应
差分法
convection-diffusion equation
finite difference scheme
upwind effect