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| DOI | 10.1016/j.advwatres.2020.103636 |
| Simulation of two-phase flow in porous media with sharp material discontinuities | |
| Tran L.K.; Kim J.C.; Matthäi S.K. | |
| 发表日期 | 2020 |
| ISSN | 0309-1708 |
| 卷号 | 142 |
| 英文摘要 | Geologic boundaries juxtaposing fine- against coarse-grained rock, have a profound impact on multiphase flow, giving rise to a spectrum of non-linear flow behaviors, ranging from capillary filtration, capillary holdup and the formation of transient ’vapour locks’, to spontaneous imbibition. Although these discontinuities tend to be small-scale features, their impact is felt on the large scale where they are challenging to model with regard to both, spatial discretization and dynamic flow simulation. We develop a new numerical scheme to handle jump discontinuities in pressure and saturation, embedding boundaries into a hybrid FE-FVM model of immiscible two-phase flow in porous media. The integration of interface conditions is an extension of the discontinuous finite element finite volume method (DFEFVM). A unique feature of it is that saturation at the interface is computed locally without constructing a system of equations, and, in contrast with other schemes, it offers sufficient degrees of freedom to accommodate disequilibrium in pressure. A range of test cases including gravity, capillary pressure and material discontinuities are presented to verify, validate and show the effectiveness of the new simulation method. © 2020 Elsevier Ltd |
| 关键词 | Degrees of freedom (mechanics)Finite volume methodPorous materialsCapillary filtrationDiscontinuous finite elementImmiscible two-phase flowsIntegration of interfacesMaterial discontinuitySmall-scale featuresSpatial discretizationsSpontaneous imbibitionTwo phase flowcapillarityfiltrationfinite element methodflow modelingnumerical modelporous mediumtwo phase flow |
| 语种 | 英语 |
| 来源机构 | Advances in Water Resources |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/131768 |
| 推荐引用方式 GB/T 7714 | Tran L.K.,Kim J.C.,Matthäi S.K.. Simulation of two-phase flow in porous media with sharp material discontinuities[J]. Advances in Water Resources,2020,142. |
| APA | Tran L.K.,Kim J.C.,&Matthäi S.K..(2020).Simulation of two-phase flow in porous media with sharp material discontinuities.,142. |
| MLA | Tran L.K.,et al."Simulation of two-phase flow in porous media with sharp material discontinuities".142(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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