期刊
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
卷 122, 期 -, 页码 1182-1197出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijheatmasstransfer.2018.02.056
关键词
Methane hydrate; Dissociation; Slip boundary; Ice formation; Depressurization
资金
- National Natural Science Foundation of China [51436003, 51776031]
- Equipment Servicing Foundation of DUT [SYSWX201625]
- Fundamental Research Funds for the Central Universities [DUT16QY03]
As for the dissociation of methane hydrate accompanied by multiphase multicomponent flow through micro porous media channels, it is necessary to investigate the microscale effects on the multiphase flow behavior as well as the mass and heat transfer between phases. Meanwhile, the interaction between hydrate dissociation or reformation and ice formation or melting is one of the most important factors. In this paper, with the consideration of ice formation/melting and heat transfer between phases, the momentum and energy equations for all phases and a comprehensive Users' Defined Subroutine (UDS) are solved in a proposed numerical model to investigate methane hydrate dissociation. The reliability of current model has been proved by comparing with the experiment data and previous simulation results in a good agreement, and then the model was used to study the methane hydrate dissociation at low temperature in the micro porous media channels. The microscale effects on methane hydrate dissociation was studied in two cases (with/without microscale effects), and our results showed that water temperature, volume fraction of phases, ice distribution, hydrate dissociation rate, methane velocity, mass transfer rate between water and ice and saturation of phases are affected seriously by the micro scale effects. Especially the water temperature, which is one of the critical factors for hydrate dissociation, shows an unstable change when the microscale effects is ignored. (C) 2018 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据