書誌事項
- タイトル別名
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- A Numerical Study on Flow Assurance of Methane Hydrate Production Systems
- メタンハイドレート資源開発における坑井内流動障害に関する数値計算(第2報)接触時間と反応速度を考慮した接着力モデルと坑井内流動解析
- メタンハイドレート シゲン カイハツ ニ オケル コウセイ ナイ リュウドウ ショウガイ ニ カンスル スウチ ケイサン(ダイ2ホウ)セッショク ジカン ト ハンノウ ソクド オ コウリョ シタ セッチャクリョク モデル ト コウセイ ナイ リュウドウ カイセキ
- –第2 報：接触時間と反応速度を考慮した接着力モデルと坑井内流動解析
- – 2<sup>nd</sup> Report: Bonding Model Considering Contacting Time and Phase Change Rate –
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説明
This paper describes a new algorithm implemented on the scheme, which was developed by authors<tt>'</tt> previous research in the Discrete Element Method with the Coarse Grid Thermal-Fluid Coupling Scheme to represent formation and decomposition of methane hydrate particles for the flow assurance during operation of the production system. The algorithm represents transient bonding process between methane hydrate particles or methane gas bubbles surrounded by methane hydrate shell. This process involves a phase-change between methane hydrate and methane gas/water, which is related to contacting time and the rate. Several simulations were conducted to validate the new algorithms. Also a simulation, which mimics flow of methane hydrate particles or methane gas bubbles surrounded by methane hydrate shell in the vertical duct, was conducted to examine bonding process under subcooling condition. It was verified that the thermal energy between particles and continuous phase are exchanged correctly under a phase-change with bonding process. Also the scheme was able to represent a phase-change from methane hydrate into methane gas/water by changing the phase- change rate and the Pressure-Temperature diagram. Further, it was found that condition of particle agglomeration during flowing in the vertical duct depends on the strength of the bond. As a whole, the improved scheme enables one to examine the flow assurance without blockage by methane hydrate in the production system if parameters are specified correctly in simulations.
収録刊行物
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- 資源と素材
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資源と素材 131 (7), 449-458, 2015
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390001205281633408
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- NII論文ID
- 130005085488
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- NII書誌ID
- AA12188381
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- ISSN
- 18840450
- 18816118
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- NDL書誌ID
- 026605494
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可