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Parallel unstructured mesh generation by an advancing front method

Author

Listed:
  • Ito, Yasushi
  • Shih, Alan M.
  • Erukala, Anil K.
  • Soni, Bharat K.
  • Chernikov, Andrey
  • Chrisochoides, Nikos P.
  • Nakahashi, Kazuhiro

Abstract

Mesh generation is a critical step in high fidelity computational simulations. High-quality and high-density meshes are required to accurately capture the complex physical phenomena. A robust approach for a parallel framework has been developed to generate large-scale meshes in a short period of time. A coarse tetrahedral mesh is generated first to provide the basis of block interfaces and then is partitioned into a number of sub-domains using METIS partitioning algorithms. A volume mesh is generated on each sub-domain in parallel using an advancing front method. Dynamic load balancing is achieved by evenly distributing work among the processors. All the sub-domains are combined to create a single volume mesh. The combined volume mesh can be smoothed to remove the artifacts in the interfaces between sub-domains. A void region is defined inside each sub-domain to reduce the data points during the smoothing operation. The scalability of the parallel mesh generation is evaluated to quantify the improvement on shared- and distributed-memory computer systems.

Suggested Citation

  • Ito, Yasushi & Shih, Alan M. & Erukala, Anil K. & Soni, Bharat K. & Chernikov, Andrey & Chrisochoides, Nikos P. & Nakahashi, Kazuhiro, 2007. "Parallel unstructured mesh generation by an advancing front method," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 75(5), pages 200-209.
    • Handle: RePEc:eee:matcom:v:75:y:2007:i:5:p:200-209
    DOI: 10.1016/j.matcom.2006.12.008
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