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Smoothing of Grid Discontinuities Across Block Boundaries

  • Pascal Mineau
Chapter
Part of the Notes on Numerical Fluid Mechanics (NNFM) book series (NNFM, volume 44)

Summary

This article summarizes the work completed at CERFACS in the sub-task 1.3.3 concerning the problem of slope discontinuities occurring at block interfaces. The starting point was a multi-block three-dimensional mesh generator developed by H. Ewetz, at KTH, Stockholm, Sweden. It was based on a solid modeling approach and a variational formulation to optimize the shapes of the blocks (references[1]and [2]). This code has been completely rewritten in order to increase its speed and to add new functionals. Graphic features have also been added to permit an interactive visualization of the generated mesh. Unfortunately, the results obtained with the new code were not always of the best quality, and moreover, computing time was very long. A more classical approach based on elliptic smoothing was then used with more success and will be also presented hereafter.

Keywords

Control Point Laplace Equation Finite Volume Method Mesh Generation Mesh Point 
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).
    H. Ewetz and J. Oppelstrup. Multiblock Mesh Generation for 3D CFD Applications. Numerical Analysis and Computing Science, KTH S 100 44 STOCKHOLM, Sweden. ( September 1987 ).Google Scholar
  2. [2]
    J. Oppelstrup and J.Hórnfeldt. MultiblockMesh Generation and a General 3D Steady Flow Code. Proceedings of the First Scandinavian Symposium on Viscous Fluid in Hydraulic Machinery, Trondheim, 1987.Google Scholar
  3. [3]
    W.H. Press, B.P. Flannery, S.A. Teukolsky, and W.T. Vetterling. Numerical Recipes. Cambridge University Press. p. 301, 307.Google Scholar
  4. [4]
    Gill, Muray, and Wright. Practical Optimization. Academic Press. New York. 1981.Google Scholar
  5. [5]
    W.H. Press, B.P. Flannery, S.A. Teukolsky, and W.T. Vetterling. Numerical Recipes. Cambridge University Press. p. 277, 282.Google Scholar
  6. [6]
    J.D. Foley, A. van Dam, S.K. Feiner, and J.F. Hughes. Computer Graphics. Second Edition. The System Programming Series - Addison Wesley. p. 471, 532.Google Scholar
  7. [7]
    J.F. Thompson, Z.U. Warsi, and C.W. Mastin. Numerical Grid Generation. North Holland, New York, 1985.zbMATHGoogle Scholar

Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden 1993

Authors and Affiliations

  • Pascal Mineau
    • 1
  1. 1.European Centre for Research and Advanced Training in Scientific ComputingC.E.R.F.A.C.S.Toulouse CedexFrance

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