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Computation of non-equilibrium hypersonic flow with artificially upstream flux vector splitting (AUFS) schemes.

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Title: Computation of non-equilibrium hypersonic flow with artificially upstream flux vector splitting (AUFS) schemes.
Authors: Tchuen, Ghislain1 tchuengse@yahoo.com, Burtschell, Yves2, Zeitoun, David E.2
Source: International Journal of Computational Fluid Dynamics. Apr2008, Vol. 22 Issue 4, p209-220. 12p. 5 Diagrams, 6 Charts, 14 Graphs.
Subjects: Fluid dynamics, Fluid mechanics, Navier-Stokes equations, Euler characteristic, Viscous flow, Thermodynamics
Abstract: The AUFS scheme has been presented for solving the Euler equations [Sun, M., Takayama, K., 2003. An artificially upstream flux vector splitting scheme for the Euler equations. Journal of Computational Physics, 189, 305-329]. An extension of this high resolution scheme-based on upwind numerical methods has been developed to calculate a two-dimensional hypersonic viscous flowfield in thermochemical non-equilibrium. The time-dependent Navier-Stokes governing equations are computed by using a multi-block finite volume technique on a structured mesh. The convective fluxes at the interfaces are evaluated using a flux vector splitting (FVS) method with a second-order reconstruction of the interface values and the viscous terms are discretised by second-order central differences. A better evaluation of aerodynamic parameters are obtained with this AUFS scheme and they are also compared to those obtained by previous works. The freestream flow conditions of these computations correspond to high-enthalpy flows with a Mach number range between 6.4 and 25.9. The obtained numerical results indicate that the AUFS scheme is accurate, robust, and efficient for the calculation of hypersonic flow. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Computation of non-equilibrium hypersonic flow with artificially upstream flux vector splitting (AUFS) schemes.
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  Data: <searchLink fieldCode="AR" term="%22Tchuen%2C+Ghislain%22">Tchuen, Ghislain</searchLink><relatesTo>1</relatesTo><i> tchuengse@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Burtschell%2C+Yves%22">Burtschell, Yves</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Zeitoun%2C+David+E%2E%22">Zeitoun, David E.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Computational+Fluid+Dynamics%22">International Journal of Computational Fluid Dynamics</searchLink>. Apr2008, Vol. 22 Issue 4, p209-220. 12p. 5 Diagrams, 6 Charts, 14 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+mechanics%22">Fluid mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Navier-Stokes+equations%22">Navier-Stokes equations</searchLink><br /><searchLink fieldCode="DE" term="%22Euler+characteristic%22">Euler characteristic</searchLink><br /><searchLink fieldCode="DE" term="%22Viscous+flow%22">Viscous flow</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamics%22">Thermodynamics</searchLink>
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  Data: The AUFS scheme has been presented for solving the Euler equations [Sun, M., Takayama, K., 2003. An artificially upstream flux vector splitting scheme for the Euler equations. Journal of Computational Physics, 189, 305-329]. An extension of this high resolution scheme-based on upwind numerical methods has been developed to calculate a two-dimensional hypersonic viscous flowfield in thermochemical non-equilibrium. The time-dependent Navier-Stokes governing equations are computed by using a multi-block finite volume technique on a structured mesh. The convective fluxes at the interfaces are evaluated using a flux vector splitting (FVS) method with a second-order reconstruction of the interface values and the viscous terms are discretised by second-order central differences. A better evaluation of aerodynamic parameters are obtained with this AUFS scheme and they are also compared to those obtained by previous works. The freestream flow conditions of these computations correspond to high-enthalpy flows with a Mach number range between 6.4 and 25.9. The obtained numerical results indicate that the AUFS scheme is accurate, robust, and efficient for the calculation of hypersonic flow. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of International Journal of Computational Fluid Dynamics is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/10618560701766525
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 209
    Subjects:
      – SubjectFull: Fluid dynamics
        Type: general
      – SubjectFull: Fluid mechanics
        Type: general
      – SubjectFull: Navier-Stokes equations
        Type: general
      – SubjectFull: Euler characteristic
        Type: general
      – SubjectFull: Viscous flow
        Type: general
      – SubjectFull: Thermodynamics
        Type: general
    Titles:
      – TitleFull: Computation of non-equilibrium hypersonic flow with artificially upstream flux vector splitting (AUFS) schemes.
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            NameFull: Tchuen, Ghislain
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            NameFull: Burtschell, Yves
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            NameFull: Zeitoun, David E.
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            – D: 01
              M: 04
              Text: Apr2008
              Type: published
              Y: 2008
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            – TitleFull: International Journal of Computational Fluid Dynamics
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