Characteristics method applied to a line source explosion

Material type: 文書・図像類

Author: 東野, 文雄ほか

Publisher: 宇宙航空研究開発機構

Publication date: 2008-03-31

Material Format: Digital

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Note (General)：: Cylindrical blast waves generated in a real air is investigated by means of the method of characteristics under the assumption of a line source explos...

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Material Type: 文書・図像類
Title: Characteristics method applied to a line source explosion
Author/Editor: 東野, 文雄
坂口, 堯
林, 光一
小川, 哲
Higashino, Fumio
Sakaguchi, Gyo
Hayashi, A. Koichi
Ogawa, Satoru
Author Heading: 東野, 文雄
坂口, 堯
林, 光一
小川, 哲
Higashino, Fumio
Sakaguchi, Gyo
Hayashi, A. Koichi
Ogawa, Satoru
Publication, Distribution, etc.: 宇宙航空研究開発機構
Publication Date: 2008-03-31
Publication Date (W3CDTF): 2008-03-31
Alternative Title: 線状爆発における特性法を用いた解析について
Periodical title: 宇宙航空研究開発機構研究開発資料 = JAXA Research and Development Memorandum
No. or year of volume/issue: JAXA-RM-07-017E
Volume: JAXA-RM-07-017E
ISSN (Periodical Title): ISSN : 1349-1121
Text Language Code: eng
Subject Heading: 1次元流
ガス爆発
ガス解離
衝撃波伝搬
線状爆発
速度分布
圧力分布
相似解
次元解析
非定常流
one dimensional flow
gas explosion
gas dissociation
shock wave propagation
line source explosion
velocity distribution
pressure distribution
similarity solution
dimensional analysis
unsteady flow
Target Audience: 一般
Note (General): Cylindrical blast waves generated in a real air is investigated by means of the method of characteristics under the assumption of a line source explosion. The effect of dissociation on shock wave propagation in air is evaluated by utilizing an effective isentropic index. The effect of dissociation is remarkable in the velocity profiles behind shock front for initial shock strengths between M(sub 0) = 4 and 8. Various mesh sizes on numerical computation are tested to determine the trajectory of the shock front in the time-space domain. In the case of perfect gases without dissociation, the 51 points on a constant time line are enough to integrate the characteristic equations. For dissociating gases, the 201 points are necessary to continue stable computations. Pressure profiles at a long time elapse after explosion reveal that the pressure in the vicinity of the explosion center gradually decreases below the initial pressure of the atmosphere different from similarity solutions.
資料番号: AA0063999000
レポート番号: JAXA-RM-07-017E
Source: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2609&item_no=1&attribute_id=31&file_no=1
https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2609&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