流体との連成を可能とする大規模反応方程式高速時間積分法の評価
Evaluation of explicit time integration methods for large chemical reaction equations to be coupled with fluid dynamics
- 提供方法
- 本サイト上にてダウンロード・閲覧可
- 形態
- 価格
- 一般価格(税込)：￥1,100 会員価格(税込)：￥880
- 文献番号
- 20135742
- 文献・情報種別
- 学術講演会予稿集（秋）
No.158-13
- 掲載ページ
- 1-5(Total 5 p)
- 発行年月
- 2013年 10月
- 出版社
- (公社)自動車技術会
- 言語
- 日本語
書誌事項
| 著者 | 1) 森井 雄飛, 2) 寺島 洋史, 3) 越 光男, 4) 清水 太郎 |
|---|---|
| 著者（英） | 1) Youhi Morii, 2) Hiroshi Terashima, 3) Mitsuo Koshi, 4) Taro Shimizu |
| 勤務先 | 1) JAXA/JEDI, 2) 東京大学, 3) 横浜国立大学, 4) JAXA/JEDI |
| 勤務先（英） | 1) JAXA/JEDI, 2) The University of Tokyo, 3) Yokohama National University, 4) JAXA/JEDI |
| 抄録 | 大規模詳細化学反応機構と流体を連成させた解析では，化学反応方程式の時間積分が全体の計算時間の大部分を占めると考えられる．本研究では，硬直性の強い化学反応方程式を陽解法で時間積分し，安定性と計算時間を陰解法で時間積分した結果と比較し，流体との錬成を可能とする高速時間積分法の評価を実施した． |
| 抄録（英） | Performance and accuracy of several time integration methods for chemical reaction equations are comprehensively investigated, aiming at an efficient reacting flow simulation with large detailed chemical kinetics. In this study, a modified CHEMEQ2, dynamic multi-time scale method (MTS), and two Runge-Kutta-based methods (R-KChebyshev and R-K-Fehlberg) are considered as currently available and possible explicit time integration methods, while VODE is used as a reference implicit time integration method. Ignition problems for three hydrocarbon systems (CH4, n-C7H16, and n-C10H22) and an internal combustion engine model with n-C7H16 are simulated. The results for both problems show that the modified CHEMEQ2 shows the best performance for all the conditions in not only the accuracy, but also the robustness, while MTS gives less performance and the two Runge-Kutta-based methods cannot work even for the ignition problems with hydrocarbon systems. It is also found that the two explicit time integration methods (CHEMEQ2 and MTS) reduce nearly 20-100 times computational time compared to the reference implicit time integration method. 翻訳 |
