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CartGen: Robust, efficient and easy to implement uniform/octree/embedded boundary Cartesian grid generator

Tavakoli, R ; Sharif University of Technology | 2008

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  1. Type of Document: Article
  2. DOI: 10.1002/fld.1685
  3. Publisher: 2008
  4. Abstract:
  5. An efficient and easy to implement method to generate Cartesian grids is presented. The presented method generates various kinds of Cartesian grids such as uniform, octree and embedded boundary grids. It supports the variation of grid size along each spatial direction as well as anisotropic and non-graded refinements. The efficiency and ease of implementation are the main benefits of the presented method in contrast to the alternative methods. Regarding octree grid generation, applying a simple and efficient data compression method permits to store all grid levels without considerable memory overhead. The presented method generates octree grids up to a 13-level refinement (81923 grids on the finest level) from a complicated geometry in a few minutes on the traditional desktop computers. The FORTRAN 90 implementation of the presented method is freely available under the terms of the GNU general public license. Copyright © 2007 John Wiley & Sons, Ltd
  6. Keywords:
  7. Computational fluid dynamics ; Alternative methods ; Cartesian grid generation ; Cartesian grids ; Compression methods ; Embedded boundary ; Grid generation ; Grid levels ; Grid sizes ; Hierarchical grid ; Immersed boundary ; Memory overheads ; Octree generation ; Spatial directions ; STL file ; Voxelization ; Data compression
  8. Source: International Journal for Numerical Methods in Fluids ; Volume 57, Issue 12 , 30 August , 2008 , Pages 1753-1770 ; 02712091 (ISSN)
  9. URL: https://www.onlinelibrary.wiley.com/doi/10.1002/fld.1685