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A New Characteristic Nonconforming Mixed Finite Element Scheme for Convection-Dominated Diffusion Problem

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  • Dongyang Shi
  • Qili Tang
  • Yadong Zhang

Abstract

A characteristic nonconforming mixed finite element method (MFEM) is proposed for the convection-dominated diffusion problem based on a new mixed variational formulation. The optimal order error estimates for both the original variable and the auxiliary variable with respect to the space are obtained by employing some typical characters of the interpolation operator instead of the mixed (or expanded mixed) elliptic projection which is an indispensable tool in the traditional MFEM analysis. At last, we give some numerical results to confirm the theoretical analysis.

Suggested Citation

  • Dongyang Shi & Qili Tang & Yadong Zhang, 2013. "A New Characteristic Nonconforming Mixed Finite Element Scheme for Convection-Dominated Diffusion Problem," Journal of Applied Mathematics, Hindawi, vol. 2013, pages 1-10, April.
    • Handle: RePEc:hin:jnljam:951692
    DOI: 10.1155/2013/951692
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