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Far field boundary condition for convection diffusion equation at zero viscosity limit

Jian-Guo Liu University of Maryland WEN-QING XU California State University

Analysis of PDEs mathscidoc:1702.03065

Quarterly of Applied Mathematics, 62, 27-52, 2004.1
In this paper, we give a systematic study of the boundary layer behavior for linear convection-diffusion equation in the zero viscosity limit. We analyze the boundary layer structures in the viscous solution and derive the boundary condition satisfied by the viscosity limit as a solution of the inviscid equation. The results confirm that the Neumann type of far-field boundary condition is preferred in the outlet and characteristic boundary condition. Under some appropriate regularity and compatibility conditions on the initial and boundary data, we obtain optimal error estimates between the full viscous solution and the inviscid solution with suitable boundary layer corrections. These results hold in arbitrary space dimensions and similar statements also hold for the strip problem. This model well describes the behavior at the far-field for many physical and engineering systems such as fluid dynamical equation and electro-magnetic equation. The results obtained here should provide some theoretical guidance for designing effective far-field boundary conditions.
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@inproceedings{jian-guo2004far,
  title={Far field boundary condition for convection diffusion equation at zero viscosity limit},
  author={Jian-Guo Liu, and WEN-QING XU},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170209101511465296373},
  booktitle={Quarterly of Applied Mathematics},
  volume={62},
  pages={27-52},
  year={2004},
}
Jian-Guo Liu, and WEN-QING XU. Far field boundary condition for convection diffusion equation at zero viscosity limit. 2004. Vol. 62. In Quarterly of Applied Mathematics. pp.27-52. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170209101511465296373.
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