Gridless Boundary Treatment for Viscous Flow Computations Using Cartesian Grid Method

• ISHIDA Takashi

  Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency

• KAWAI Soshi

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

• NAKAHASHI Kazuhiro

  Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency

抄録

A realistic wall boundary treatment method for viscous flow computations using Cartesian grid method is proposed to simulate compressible flows around complex geometries at low and high Reynolds numbers. In this method, a Cartesian grid is used as a background grid to cover the whole computational domain and a wall boundary is treated by gridless method to express a smooth wall boundary of input geometries in a Cartesian grid. Subgrid which is similar to a prismatic layer in conventional unstructured grid method is introduced near the wall boundary to resolve a boundary layer. The proposed method is applied to the Building-Cube Method (BCM) which is a block-structured Cartesian grid approach proposed by one of the authors. Capability of the proposed method is demonstrated through several two-dimensional test cases.

収録刊行物

• Journal of Computational Science and Technology

  Journal of Computational Science and Technology 7 (1), 38-58, 2013

  一般社団法人 日本機械学会

キーワード

• Cartesian Grid
• Building-Cube Method (BCM)
• Gridless Method

詳細情報

• CRID: 1390282680252123648
• NII論文ID: 130003368067
• DOI: 10.1299/jcst.7.38
• ISSN: 18816894
• Web Site: https://www.jstage.jst.go.jp/article/jcst/7/1/7_38/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可