著者

渡邊 裕章 廣瀬 智陽子 青山 千春

出版者

日本混相流学会

雑誌

混相流 (ISSN:09142843)

巻号頁・発行日

vol.36, no.4, pp.407-414, 2022-12-15 (Released:2023-01-13)

参考文献数

15

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Methane hydrate is expected as domestic energy resources in near future in Japan. Especially the shallow-type methane hydrate and the associated methane plume are regarded as sustainable energy resources. In this paper, the investigation of the methane hydrate particle motion in the methane is presented. A quantitative analysis of the motions of the ascending methane hydrate particles seeping from the seafloor and reproduced by the numerical simulation is performed by the two-dimensional motion analysis technique and the behavior is discussed in detail.

著者

田中 亮太 則永 行庸 工藤 真二 林 潤一郎 渡邊 裕章

出版者

一般社団法人 日本エネルギー学会

雑誌

石炭科学会議発表論文集 第50回石炭科学会議 (ISSN:24238295)

巻号頁・発行日

pp.62-63, 2013-10-21 (Released:2017-03-22)

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This study focuses on the syngas production by partial oxidation of coke oven gas (COG). The reforming of COG, which is a multi-component mixture, in a turbulent flow includes various complex processes. Previous studies were limited to the results using simulated gas with a laboratory scale small reactor and a laminar flow. In this study, we developed a model which considers both chemical reactions and fluid dynamics for simulating the reforming characteristics of the actual COG in a bench scale relatively large reactor. The detailed chemical kinetic model which consists of more than 2000 elementary reactions and 257 species was reduced to 410 reactions and 47 sepcies for realizing coupling a finite rate reaction model with the turbulence model. Numerical simulations could fairly reproduce the reformed gas compositions and temperature profiles in a reformer.