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Computational zone adaptation strategy for unstructured grid users

Fouladi, N ; Sharif University of Technology | 2010

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  1. Type of Document: Article
  2. DOI: 10.2514/6.2010-119
  3. Publisher: 2010
  4. Abstract:
  5. This paper presents an advanced grid adaptation strategy to be used by unstructured grid users. The idea behind this strategy originates from the need for automatic control of computational grids during iterative procedures utilized by fluid flow solvers. This strategy eliminates unnecessary grid computations by dividing the unstructured grid into active and inactive zones automatically. The active zones are extended automatically in order to capture the propagation of disturbances in solution domain. In this work, we focus to solve the grid deformations which are imposed in some portions of the main body and are propagated into computational domain during the iterative solutions. To achieve this purpose, we introduce a new automatic mesh partitioning scheme. We apply this scheme over a new developed quasi-structured data structure. In this work, we extend a more flexible deformation algorithm using this partitioning scheme. It eliminates the need for sequential reordering of the unstructured grid in different mesh moving or deformation demands. We investigate the strategy for some popular types of mesh deformation problems over a multi-element airfoil. These problems are handled with considerably small convergence time by the new method respect to the conventional one. Copyright
  6. Keywords:
  7. Active zone ; Adaptation strategies ; Automatic control ; Computational domains ; Computational grids ; Convergence time ; Deformation demands ; Flexible deformation ; Fluid flow ; Grid adaptation ; GRID computation ; Grid deformation ; Iterative procedures ; Iterative solutions ; Mesh deformation ; Mesh partitioning ; Multi element airfoils ; Structured data ; Unstructured grid ; Aerospace engineering ; Airfoils ; Automation ; Control ; Data structures ; Flow of fluids ; Deformation
  8. Source: 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 4 January 2010 through 7 January 2010, Orlando, FL ; 2010 ; 9781600867392 (ISBN)
  9. URL: http://arc.aiaa.org/doi/abs/10.2514/6.2010-119