Parallel implementation of gas-kinetic BGK scheme on unstructured hybrid grids


Ilgaz M., TUNCER İ. H.

36th AIAA Fluid Dynamics Confernce, San Francisco, CA, Amerika Birleşik Devletleri, 5 - 08 Haziran 2006, cilt.4, ss.2793-2805 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 4
  • Doi Numarası: 10.2514/6.2006-3919
  • Basıldığı Şehir: San Francisco, CA
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Sayfa Sayıları: ss.2793-2805
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The gas-kinetic BGK scheme on unstructured hybrid grids is presented. In order to accurately resolve the boundary layers in wall bounded viscous flow solutions, quadrilateral grid cells are employed in the boundary layer regions normal to solid surfaces while the rest of the domain is discretized by triangular cells. The computation time, which is a significant deficiency of the gas-kinetic schemes, is improved by performing computations in parallel. The parallel algorithm for hybrid grids is based on the domain decomposition using METIS, a graph partitioning software. Several numerical test cases are presented to show the accuracy and robustness of the proposed approach.