Transverse and longitudinal fluid flow modelling in fractured porous media with non‐matching meshes
| Autor: | Marcelo R. Carvalho, Luís A.G. Bitencourt, Behnam V. Damirchi, Osvaldo L. Manzoli, Daniel Dias-da-Costa |
|---|---|
| Přispěvatelé: | The University of Sydney, Universidade de São Paulo (USP), Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2020 |
| Předmět: |
fluid flow
Matching (statistics) coupling finite elements 0211 other engineering and technologies 0207 environmental engineering Computational Mechanics 02 engineering and technology Mechanics Geotechnical Engineering and Engineering Geology transverse fluid flow Transverse plane embedded discontinuity approach Mechanics of Materials Fluid dynamics General Materials Science Polygon mesh 020701 environmental engineering Porous medium Geology fractured porous media 021101 geological & geomatics engineering |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1096-9853 0363-9061 |
| Popis: | Made available in DSpace on 2021-06-25T10:11:38Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Petrobras Australian Research Council A new discrete fracture model is introduced to simulate the steady-state fluid flow in discontinuous porous media. The formulation uses a multi-layered approach to capture the effect of both longitudinal and transverse permeability of the discontinuities in the pressure distribution. The formulation allows the independent discretisation of mesh and discontinuities, which do not need to conform. Given that the formulation is developed at the element level, no additional degrees of freedom or special integration procedures are required for coupling the non-conforming meshes. The proposed model is shown to be reliable regardless of the permeability of the discontinuity being higher or lower than the surrounding domain. Four numerical examples of increasing complexity are solved to demonstrate the efficiency and accuracy of the new technique when compared with results available in the literature. Results show that the proposed method can simulate the fluid pressure distribution in fractured porous media. Furthermore, a sensitivity analysis demonstrated the stability regarding the condition number for wide range values of the coupling parameter. School of Civil Engineering The University of Sydney Polytechnic School at the University of São Paulo São Paulo State University UNESP/Bauru São Paulo State University UNESP/Bauru Petrobras: 2018/00205-5 Australian Research Council: DE150101703 Australian Research Council: DP170104192 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text