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|Scopus||Web of Science®||Altmetric|
|Title:||Influences of connectivity and conductivity on nonlinear flow behaviours through three-dimension discrete fracture networks|
|Citation:||Computers and Geotechnics, 2019; 107:128-141|
|Feng Xiong, Qinghui Jiang, Chaoshui Xu, Xiaobo Zhang, Qihua Zhang|
|Abstract:||A numerical procedure about nonlinear flow in three-dimension discrete fracture networks was developed by solving the Reynolds equation and Forchheimer equation using the Galerkin method. The numerical simulation results of three intersecting models were compared with experimental data and a good agreement was observed. Based on further applications of the model to fracture networks with the consideration of Barton’s and Chen’s empirical model, it was found that nonlinear fluid flows in fracture networks could be appropriately described by the Forchheimer equation. The smoother the fracture surfaces and the greater the connectivity of the fracture network are, the lower the hydraulic gradient for the onset of nonlinear flows is.|
|Keywords:||Discrete fracture network; nonlinear flow; fracture network connectivity; fracture surface roughness; dimensionless percolation density; critical hydraulic gradient|
|Rights:||© 2018 Elsevier Ltd. All rights reserved.|
|Appears in Collections:||Civil and Environmental Engineering publications|
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