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Hybrid Grid Adaptation in TAU

  • Conference paper
MEGAFLOW - Numerical Flow Simulation for Aircraft Design

Summary

Local grid refinement for unstructured meshes is a common approach to improve the accuracy of a solution for a given CFD problem or to reduce the amount of needed points for a numerical calculation. As part of the DLR-TAU code the Adaptation provides a hierarchical refinement and de-refinement tool for 2D and 3D hybrid grids. The object of this tool is to adapt the grid automatically to a given solution. This article described the major components of the tool, the grid refinement with surface approximation and the y+ adjustment along wall-normal lines. Furthermore an overview of the used sensor functions is given, which are available for the detection of the local refinement and de-refinement.

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References

  1. J. Bey: Finite-Volumen-und Mehrgitter-Verfahren für elliptische Randwertprobleme. B.G. Teubner, 1998.

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  2. Thomas Alrutz: Erzeugung von unstrukturierten Netzen und deren Verfeinerung anhand des Adaptationsmoduls des DLR TAU-Codes. Master’s thesis, Universität Göttingen, 2002.

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  3. N. Kroll and Th. Gerhold and S. Melber and R. Heinrich and Th. Schwarz and B. Schöning: Parallel Large Scale Computations for Aerodynamic Aircraft Design with the German CFD System MEGAFLOW. Parallel CFD, 2002.

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Author information

Authors and Affiliations

  1. DLR, Institute of Aerodynamics and Flow Technology, Bunsenstr. 10, D-37073, Göttingen

    Thomas Alrutz

Authors
  1. Thomas Alrutz
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Editor information

Editors and Affiliations

  1. Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) in der Helmholtz-Gemeinschaft, German Aerospace Center, Germany

    Norbert Kroll (Member of the Helmholtz Association) & Jens K. Fassbender (Member of the Helmholtz Association) & 

  2. Institute of Aerodynamics and Flow Technology, Lilienthalplatz 7, 38108, Braunschweig, Germany

    Norbert Kroll (Member of the Helmholtz Association) & Jens K. Fassbender (Member of the Helmholtz Association) & 

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© 2005 Springer-Verlag Berlin Heidelberg

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Alrutz, T. (2005). Hybrid Grid Adaptation in TAU. In: Kroll, N., Fassbender, J.K. (eds) MEGAFLOW - Numerical Flow Simulation for Aircraft Design. Notes on Numerical Fluid Mechanics and Multidisciplinary Design (NNFM), vol 89. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-32382-1_7

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  • DOI: https://doi.org/10.1007/3-540-32382-1_7

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-24383-0

  • Online ISBN: 978-3-540-32382-2

  • eBook Packages: EngineeringEngineering (R0)

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