| Presentation | 2020-06-05 Nonlinear dynamics of a turbulent fire under high oxygen concentrations Katsutoshi Utsugi, Takumi Tokami, Hiroshi Gotoda, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have clarified the spatiotemporal dynamics of the temperature field during a turbulent fire under high oxygen concentration using time series analysis based on symbolic dynamics. The dynamical behavior of temperature fluctuations becomes more complicated in the downstream region than in the upstream region as well as a recent study [K. Takagi et al., Phys. Lett. A 382, 3181 (2019)] on turbulent fire under normal oxygen concentration. High oxygen concentration field gives rise to the significant density difference between combustion products and surrounding atmosphere, resulting in the increase in the irregularity of temperature fluctuations in the upstream region. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Buoyancy-induced turbulent fire / Oxygen concentration / Large-eddy simulation / Symbolic dynamics |
| Paper # | NLP2020-20,CCS2020-10 |
| Date of Issue | 2020-05-29 (NLP, CCS) |
| Conference Information | |
| Committee | CCS / NLP |
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| Conference Date | 2020/6/5(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Shonan Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shigeki Shiokawa(Kanagawa Inst. of Tech.) / Kiyohisa Natsume(Kyushu Inst. of Tech.) |
| Vice Chair | Tetsuya Asai(Hokkaido Univ.) / Megumi Akai(Hokkaido Univ.) / Takuji Kosaka(Chukyo Univ.) |
| Secretary | Tetsuya Asai(Kanagawa Inst. of Tech.) / Megumi Akai(TDK) / Takuji Kosaka(Kyushu Inst. of Tech.) |
| Assistant | Hidehiro Nakano(Tokyo City Univ.) / Hiroyasu Ando(Tsukuba Univ.) / Takashi Matsubara(Kobe Univ.) / Kosuke Sanada(Mie Univ.) / Toshikaza Samura(Yamaguchi Univ.) / Hideyuki Kato(Oita Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Complex Communication Sciences / Technical Committee on Nonlinear Problems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Nonlinear dynamics of a turbulent fire under high oxygen concentrations |
| Sub Title (in English) | |
| Keyword(1) | Buoyancy-induced turbulent fire |
| Keyword(2) | Oxygen concentration |
| Keyword(3) | Large-eddy simulation |
| Keyword(4) | Symbolic dynamics |
| 1st Author's Name | Katsutoshi Utsugi |
| 1st Author's Affiliation | Tokyo University of Science Graduate School(TUS) |
| 2nd Author's Name | Takumi Tokami |
| 2nd Author's Affiliation | Tokyo University of Science Graduate School(TUS) |
| 3rd Author's Name | Hiroshi Gotoda |
| 3rd Author's Affiliation | Tokyo University of Science(TUS) |
| Date | 2020-06-05 |
| Paper # | NLP2020-20,CCS2020-10 |
| Volume (vol) | vol.120 |
| Number (no) | NLP-55,CCS-56 |
| Page | pp.pp.45-48(NLP), pp.45-48(CCS), |
| #Pages | 4 |
| Date of Issue | 2020-05-29 (NLP, CCS) |