DOI: https://doi.org/10.26089/NumMet.v21r429

Tetrahedral grid generation for supercomputer modeling of flow past aerospace objects

Authors

  • M.K. Ermakov

Keywords:

grid generation
tetrahedral grids
Gmsh
open source
supercomputer modeling
flow past aerospace objects

Abstract

Gmsh open source software is used to generate ultra-detailed tetrahedral grids of up to 1 billion cells. The package allows one to build automatically specified grids on a PC in parallel OpenMP mode in a time not exceeding 1 hour when using an Intel i7–9700K PC. The experience of using the package to construct the spatial grids for problems of flows past aerospace objects is described. Several examples of supercomputer calculations for the flows past aerospace objects are given.

New computational technologies

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Published

2020-10-07

Issue

Vol. 21 (2020): Issue 4.

Section

Parallel software tools and technologies

Author Biography

M.K. Ermakov

Ishlinsky Institute for Problems in Mechanics of RAS
• Senior Researcher

References

  1. Yu. V. Vassilevski, A. A. Danilov, K. N. Lipnikov, and V. N. Chugunov, Automated Technologies of Constructing Unstructured Settlement Grids (Fizmatlit, Moscow, 2016) [in Russian].
  2. C.  Geuzaine and J.-F. Remacle, “Gmsh: A 3-D Finite Element Mesh Generator with Built-in Pre- and Post-Processing Facilities,” Int. J. Numer. Methods Eng. 79 (11), 1309-1331 (2009).
  3. C. Marot, J. Pellerin, and J.-F. Remacle, “One Machine, One Minute, Three Billion Tetrahedra,” Int. J. Numer. Methods Eng. 117 (9), 967-990 (2019).
  4. C.  Geuzaine and J.-F. Remacle, “A Three-Dimensional Finite Element Mesh Generator with Built-in Pre- and Post-Processing Facilities,”
    http://gmsh.info . Cited October 5, 2020.
  5. H. Si, “TetGen, a Delaunay-based Tetrahedral Mesh Generator,” ACM Trans. Math. Softw. 41 (2), 11.1-11.36 (2015).
  6. H. Si, TetGen, a Quality Tetrahedral Mesh Generator and Three-Dimensional Delaunay Triangulator
    https://www.wias-berlin.de/software/tetgen/files/tetgen-manual.pdf . Cited October 5, 2020.
  7. J.  Schöberl, “NETGEN An Advancing Front 2D/3D-Mesh Generator Based on Abstract Rules,” Comput. Visual. Sci. 1, 41-52 (1997).
  8. M. K. Ermakov and I. A. Kryukov, “Supercomputer Modeling of Flow past Hypersonic Flight Vehicles,” J. Phys.: Conf. Ser. 815 (2017).
    doi 10.1088/1742-6596/815/1/012016
  9. Vl. V. Voevodin, S. A. Zhumatii, S. I. Sobolev, et al., “The Lomonosov Supercomputer in Practice,” Otkrytye Sistemy, No. 7, 36-39 (2012).