数学物理学报 ›› 1999, Vol. 19 ›› Issue (3): 278-285.

• 论文 • 上一篇    下一篇

含弥散核废料污染问题特征有限元方法

  

  1. 山东大学数学与统计科学学院 济南250100
  • 出版日期:1999-08-03 发布日期:1999-08-03

Fem with |teh Method of Characteristics for Compressible Flow of Contamination From Nuclear Waste in Porous Media

  1. Department of Mathematics|shandong university|jinan 250100
  • Online:1999-08-03 Published:1999-08-03

摘要:

研究可压缩核废料污染问题,考虑包含分子扩散和弥散的一般情形.从问题的原始数学
模型出发,构造了特征线有限元全离散格式.对通常使用的构造误差方程的方法进行了改进,证
明了格式的最佳L∞ (J;H1(Ω))收敛性.

关键词: 核废料污染问题, 特征有限元方法, 收敛性.

Abstract:

We wii study teh finite element method for compressible flow of contamination from nuclear in porous media,in which both of molecular diffusion and dispersion are considered.The mathematical model is a coupled quasilinear syetem of parabolic equations about pressure,temperature,brine and radionuclide.Starting from  teh primitive model ,finite element scheme based on teh method of characterristics is estabilishe and analysed.Some new estimates about elliptic projection are given,a modified tachnique is proposed to establish teh evolution inequlity for pressure error,the optimal error estimate in L∞ (J;H1(Ω))is proved.

Key words:  Compressibleflowofcontaminationfrom nuclearwaste, FEM, Characteris
tics,
Moleculardiffusionanddispersion, Convergence.

中图分类号: 

  •  65N