摘要
本文讨论了一类非线性对流扩散方程,构造了一种隐式的特征有限元Galerkin格式,并研究了非线性项b=b(x,t,u,▽μ),f=f(x,t,u,▽μ)时,L2模次优的误差估计;而当b=b(x,t,u),f=f(x,t,u)时,L2模最优的误差估计。
In this paper,an implicit characteristic finite element scheme is constructed to solve such nonlinear diffusion equation and the convergence of the scheme is studied.For nonlinear termsb=b(x,t,u,▽μ),f=f(x,t,u,▽μ),we get the L2(Ω) norm sub-optimal and whenb=b(x,t,u),f=f(x,t,u),the L2(Ω) norm optimal error estimates are obtained.
出处
《内蒙古农业大学学报(自然科学版)》
CAS
北大核心
2011年第4期302-307,共6页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
关键词
非线性对流扩散方程
特征有限元法
误差估计
Nonlinear convection-diffusion equation
characteristic finite element method
error estimates