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  • NUMERICAL ANALYSIS  (2)
  • 1990-1994  (2)
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  • 1
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    Unknown
    On central-difference and upwind schemes (1992)
    In:  Other Sources
    Details
    Publication Date: 2011-08-24
    Description: A class of numerical dissipation models for central-difference schemes constructed with second- and fourth-difference terms is considered. The notion of matrix dissipation associated with upwind schemes is used to establish improved shock capturing capability for these models. In addition, conditions are given that guarantee that such dissipation models produce a Total Variation Diminishing (TVD) scheme. Appropriate switches for this type of model to ensure satisfaction of the TVD property are presented. Significant improvements in the accuracy of a central-difference scheme are demonstrated by computing both inviscid and viscous transonic airfoil flows.
    Keywords: NUMERICAL ANALYSIS
    Type: Journal of Computational Physics (ISSN 0021-9991); 101; 2, Au; 292-306
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
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    Unknown
    On central-difference and upwind schemes (1990)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A class of numerical dissipation models for central-difference schemes constructed with second- and fourth-difference terms is considered. The notion of matrix dissipation associated with upwind schemes is used to establish improved shock capturing capability for these models. In addition, conditions are given that guarantee that such dissipation models produce a Total Variation Diminishing (TVD) scheme. Appropriate switches for this type of model to ensure satisfaction of the TVD property are presented. Significant improvements in the accuracy of a central-difference scheme are demonstrated by computing both inviscid and viscous transonic airfoil flows.
    Keywords: NUMERICAL ANALYSIS
    Type: NASA-CR-182061 , ICASE-90-44 , NAS 1.26:182061 , AD-A227206
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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