Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition
We are focusing on the practical use of methane hydrate. For recovery and use of it as an energy resource, it is necessary to consider the possibility of clogging in the recovery pipe due to the rehydration of bubbles. The purpose of this research was to observe experimentally and evaluate theoretic...
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ftdoajarticles:oai:doaj.org/article:4b065163f3d54498a9f85bf8245c2248 2023-05-15T17:11:50+02:00 Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition Takahashi Yusuke Ezure Ryosuke Takano Shun Komatsu Hiroyuki Yamagiwa Kazuaki Tajima Hideo 2021-01-01T00:00:00Z https://doi.org/10.1051/matecconf/202133302007 https://doaj.org/article/4b065163f3d54498a9f85bf8245c2248 EN FR eng fre EDP Sciences https://www.matec-conferences.org/articles/matecconf/pdf/2021/02/matecconf_apcche21_02007.pdf https://doaj.org/toc/2261-236X 2261-236X doi:10.1051/matecconf/202133302007 https://doaj.org/article/4b065163f3d54498a9f85bf8245c2248 MATEC Web of Conferences, Vol 333, p 02007 (2021) Engineering (General). Civil engineering (General) TA1-2040 article 2021 ftdoajarticles https://doi.org/10.1051/matecconf/202133302007 2022-12-31T05:24:59Z We are focusing on the practical use of methane hydrate. For recovery and use of it as an energy resource, it is necessary to consider the possibility of clogging in the recovery pipe due to the rehydration of bubbles. The purpose of this research was to observe experimentally and evaluate theoretically the decomposition behavior of hydrate sedimentary layer and the rising behavior of bubbles generated by hydrate decomposition. Chlorodifluoromethane was used as a low pressure model gas of methane. Hydrate sedimentary layer was produced by cooling and pressurizing water in countercurrent contact with gas using a hydrate formation recovery device. The recovered hydrate was decomposed by the heating or depressurization method, without flowing water. Two theoretical rising velocities were derived from the theoretical value with using the Navier-Stokes equation or the values in consideration of the bubble shape and hydrate film existence. The experimental rising velocities of small spherical bubbles radius agreed well with the theoretical value by the Navier-Stokes equation. The relatively large elliptical bubbles showed a behavior close to the theoretical value of bubble with hydrate film. Under the pressure and temperature conditions closer to the hydrate equilibrium line, almost no generated bubbles could be identified visually. Article in Journal/Newspaper Methane hydrate Directory of Open Access Journals: DOAJ Articles MATEC Web of Conferences 333 02007 |
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Directory of Open Access Journals: DOAJ Articles |
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Engineering (General). Civil engineering (General) TA1-2040 |
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Engineering (General). Civil engineering (General) TA1-2040 Takahashi Yusuke Ezure Ryosuke Takano Shun Komatsu Hiroyuki Yamagiwa Kazuaki Tajima Hideo Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition |
topic_facet |
Engineering (General). Civil engineering (General) TA1-2040 |
description |
We are focusing on the practical use of methane hydrate. For recovery and use of it as an energy resource, it is necessary to consider the possibility of clogging in the recovery pipe due to the rehydration of bubbles. The purpose of this research was to observe experimentally and evaluate theoretically the decomposition behavior of hydrate sedimentary layer and the rising behavior of bubbles generated by hydrate decomposition. Chlorodifluoromethane was used as a low pressure model gas of methane. Hydrate sedimentary layer was produced by cooling and pressurizing water in countercurrent contact with gas using a hydrate formation recovery device. The recovered hydrate was decomposed by the heating or depressurization method, without flowing water. Two theoretical rising velocities were derived from the theoretical value with using the Navier-Stokes equation or the values in consideration of the bubble shape and hydrate film existence. The experimental rising velocities of small spherical bubbles radius agreed well with the theoretical value by the Navier-Stokes equation. The relatively large elliptical bubbles showed a behavior close to the theoretical value of bubble with hydrate film. Under the pressure and temperature conditions closer to the hydrate equilibrium line, almost no generated bubbles could be identified visually. |
format |
Article in Journal/Newspaper |
author |
Takahashi Yusuke Ezure Ryosuke Takano Shun Komatsu Hiroyuki Yamagiwa Kazuaki Tajima Hideo |
author_facet |
Takahashi Yusuke Ezure Ryosuke Takano Shun Komatsu Hiroyuki Yamagiwa Kazuaki Tajima Hideo |
author_sort |
Takahashi Yusuke |
title |
Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition |
title_short |
Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition |
title_full |
Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition |
title_fullStr |
Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition |
title_full_unstemmed |
Observation of Pseudo Plume Behavior by Hydrate Sedimentary Layer Decomposition |
title_sort |
observation of pseudo plume behavior by hydrate sedimentary layer decomposition |
publisher |
EDP Sciences |
publishDate |
2021 |
url |
https://doi.org/10.1051/matecconf/202133302007 https://doaj.org/article/4b065163f3d54498a9f85bf8245c2248 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_source |
MATEC Web of Conferences, Vol 333, p 02007 (2021) |
op_relation |
https://www.matec-conferences.org/articles/matecconf/pdf/2021/02/matecconf_apcche21_02007.pdf https://doaj.org/toc/2261-236X 2261-236X doi:10.1051/matecconf/202133302007 https://doaj.org/article/4b065163f3d54498a9f85bf8245c2248 |
op_doi |
https://doi.org/10.1051/matecconf/202133302007 |
container_title |
MATEC Web of Conferences |
container_volume |
333 |
container_start_page |
02007 |
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1766068599264378880 |