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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.

Keywords

Surface Reconstruction Unstructured Mesh Local Grid Wall Normal Direction Local Grid Refinement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    J. Bey: Finite-Volumen-und Mehrgitter-Verfahren für elliptische Randwertprobleme. B.G. Teubner, 1998.Google Scholar
  2. 2.
    Thomas Alrutz: Erzeugung von unstrukturierten Netzen und deren Verfeinerung anhand des Adaptationsmoduls des DLR TAU-Codes. Master’s thesis, Universität Göttingen, 2002.Google Scholar
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    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.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Thomas Alrutz
    • 1
  1. 1.DLRInstitute of Aerodynamics and Flow TechnologyGöttingen

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