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Jung, Chang-Yeol
Analysis and computational methods Lab
Research Interests
  • Analysis, singular perturbations, uncertainty, numerical methods

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SEMI-ANALYTICAL NUMERICAL METHODS FOR CONVECTION-DOMINATED PROBLEMS WITH TURNING POINTS

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Title
SEMI-ANALYTICAL NUMERICAL METHODS FOR CONVECTION-DOMINATED PROBLEMS WITH TURNING POINTS
Author
Thien Binh NguyenJung, Chang-Yeol
Keywords
Boundary layers; Compatibility conditions; Convection-diffusion equations; Finite volume methods; Singular perturbation analysis; Transition layers; Turning points
Issue Date
201306
Publisher
ISCI-INST SCIENTIFIC COMPUTING & INFORMATION
Citation
INTERNATIONAL JOURNAL OF NUMERICAL ANALYSIS AND MODELING, v.10, no.2, pp.314 - 332
Abstract
In this article we aim to study finite volume approximations which approximate the solutions of convection-dominated problems possessing the so-called interior transition layers. The stiffness of such problems is due to a small parameter multiplied to the highest order derivative which introduces various transition layers at the boundaries and at the interior points where certain compatibility conditions do not meet. Here, we are interested in resolving interior transition layers at turning points. The proposed semi-analytic method features interior layer correctors which are obtained from singular perturbation analysis near the turning points. We demonstrate this method is efficient, stable and it shows 2nd-order convergence in the approximations.
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ISSN
1705-5105
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SNS_Journal Papers

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