高速連立一次方程式解法を用いた2,3次元流体解析システム

Material type: 文書・図像類

Author: 秋葉, 幸範ほか

Publisher: 航空宇宙技術研究所

Publication date: 1989-11

Material Format: Digital

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Note (General)：: We propose a preconditioned conjugate gradient type method suited to super-computers for solving large sparse nonsymmetric linear systems arising in f...

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Material Type: 文書・図像類
Title: 高速連立一次方程式解法を用いた2,3次元流体解析システム
Author/Editor: 秋葉, 幸範
速水, 謙
土肥, 俊
石原, 誠治
Akiba, Yukinori
Hayami, Ken
Doi, Shun
Ishihara, Seiji
Author Heading: 秋葉, 幸範
速水, 謙
土肥, 俊
石原, 誠治
Akiba, Yukinori
Hayami, Ken
Doi, Shun
Ishihara, Seiji
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1989-11
Publication Date (W3CDTF): 1989-11
Alternative Title: A Two- and Three-Dimensional Fluid Flow Analysis System Using a Fast Linear System Solver
Periodical title: 航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-10
No. or year of volume/issue: 10
Volume: 10
Pages: 19-26
ISSN (Periodical Title): ISSN : 0289-260X
Text Language Code: jpn
Target Audience: 一般
Note (General): We propose a preconditioned conjugate gradient type method suited to super-computers for solving large sparse nonsymmetric linear systems arising in finite difference fluid flow analysis which employ boundary-fitted coordinates. In two-dimensional analysis, by using only the 5-point finite difference matrix as the preconditioner, the linear systems can be solved efficiently by the Tridiagonal Factorization CGS algorithm, which can be easily vectorized. The method is also applicable to three-dimensional problems by using the 7-point finite difference matrix as the preconditioner. These techniques are employed to realize a fast 3-D fluid flow simulation system. Numerical experiments were done on the NEC SX-2 supercomputer. Results show that the TFCGS algorithm is 1.3 times faster than the conventional ILUCGS method. By using the 7-point TFCGS method, a very high vector ratio of 99.9% is achieved, and the computation speed of the vector mode is 53 times as fast as that of the scalar mode.
資料番号: NALSP0010004
レポート番号: NAL SP-10
Source: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43333&item_no=1&attribute_id=31&file_no=1
https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43333&item_no=1&attribute_id=31&file_no=1
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ