On Efficient Solution-Adaptive Grid Refinement Algorithms for Simulating Unsteady Flows with Discontinuities

• NAKAYAMA Katsuyuki

  富山県立大学大学院工学研究科機械システム工学専攻

• SAKAMURA Yoshitaka

  富山県立大学工学部機械システム工学科

Bibliographic Information

Other Title

• 不連続面を伴う非定常流に対する効率的な解適合格子細分化法に関する研究
• フレンゾクメン オ トモナウ ヒテイジョウリュウ ニ タイスル コウリツテキナ カイ テキゴウ コウシ サイブンカホウ ニ カンスル ケンキュウ

Abstract

The present paper reports the result of a numerical study on efficient solution-adaptive grid refinement algorithms for simulating unsteady flows with discontinuities. We implement a flow feature detection algorithm originally developed for quadrilateral grids by Aftosmis and Kroll (AIAA Paper 91-0124, 1991) to achieve efficient adaptation for triangular grids for simulating strongly unsteady flows with moving discontinuities such as shock waves and contact discontinuities. In their algorithm, the detection of strong shock waves is isolated from that of other smooth flow features, and the threshold for grid refinement is automatically tuned based on the statistics of grids in the smooth flow feature detection step. We illustrate the performance of the algorithm with numerical results for two benchmark problems (shock tube and double Mach reflection problems) of two-dimensional unsteady flows.

Journal

• JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

  JOURNAL OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 56 (655), 363-369, 2008

  THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

Keywords

• Unsteady Flows
• Shock Waves
• Computational Fluid Dynamics
• Solution-Adaptive Grid

Details

• CRID: 1390282679447030400
• NII Article ID: 10024595687
• NII Book ID: AA11307372
• DOI: 10.2322/jjsass.56.363
• ISSN: 24323691
• ISSN: 13446460
• NDL BIB ID: 9622203
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9622203
• Web Site: https://www.jstage.jst.go.jp/article/jjsass/56/655/56_655_363/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed