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非线性对流扩散方程的特征有限元法和L^2(Ω)模估计 被引量:2

CHARACTERISTICS FINITE ELEMENT METHOD OF NONLINEAR CONVECTION-DIFFUSION EQUATION AND L^2(Ω) MODEL ESTIMATES
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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
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