数学物理学报(英文版) ›› 1998, Vol. 18 ›› Issue (2): 146-157.

• 论文 • 上一篇    下一篇

A MIXED FINITE ELEMENT APPROXIMATION FOR COMPRESSIBLE FLOW OF CONTAMINATION FROM NUCLEAR WASTE IN POROUS MEDIA

周所向1, 李潜2   

  1. 1. Department of Mathemetics and Statistics, Bowling Green State University, Bowling Green, Ohio 43402-0221, USA;
    2. Department of Mathemetics, Shandong Normal University, Jinan 250014, China
  • 收稿日期:1996-03-15 修回日期:1996-10-30 出版日期:1998-06-25 发布日期:1998-06-25

A MIXED FINITE ELEMENT APPROXIMATION FOR COMPRESSIBLE FLOW OF CONTAMINATION FROM NUCLEAR WASTE IN POROUS MEDIA

Chou S. H1, Li Qian2   

  1. 1. Department of Mathemetics and Statistics, Bowling Green State University, Bowling Green, Ohio 43402-0221, USA;
    2. Department of Mathemetics, Shandong Normal University, Jinan 250014, China
  • Received:1996-03-15 Revised:1996-10-30 Online:1998-06-25 Published:1998-06-25

摘要: A compressible nuclear waste disposal contamination in porous media is modeled by a coupled system of partial differential equations. The approximation of this system using a finite element method for the brine, radionuclides, and heat combined with a mixed finite element method for the pressure and velocity are analyzed. Optimal order error estimates in H1 and L2 are derived. This paper improves upon previously derived estimates in two aspects. Firstly, the error analysis is given with no restriction on the diffusion tensors. That is, it has included the effects of molecular diffusion and dispersion.Secondly, the "complete compressibility" case is considered.

关键词: Mixed finite element, compressible, nuclear waste

Abstract: A compressible nuclear waste disposal contamination in porous media is modeled by a coupled system of partial differential equations. The approximation of this system using a finite element method for the brine, radionuclides, and heat combined with a mixed finite element method for the pressure and velocity are analyzed. Optimal order error estimates in H1 and L2 are derived. This paper improves upon previously derived estimates in two aspects. Firstly, the error analysis is given with no restriction on the diffusion tensors. That is, it has included the effects of molecular diffusion and dispersion.Secondly, the "complete compressibility" case is considered.

Key words: Mixed finite element, compressible, nuclear waste