Results 11 to 20 of about 5,341 (265)
Numerical simulation of the free surface and water inflow of a slope, considering the nonlinear flow properties of gravel layers: a case study [PDF]
Royal Society Open Science, 2018 Groundwater is an important factor of slope stability, and 90% of slope failures are related to the influence of groundwater. In the past, free surface calculations and the prediction of water inflow were based on Darcy's law.
Bin Yang +5 more
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Geofluids, 2020 Darcy’s law is not suit for describing high velocity flow in the near wellbore region of gas reservoirs. The non-Darcy coefficient β of the Forchheimer’s equation is a main parameter for the evaluation of seepage capacity in gas reservoirs.
Juhua Li, Chen Chen
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Non-Darcy behavior of two-phase channel flow [PDF]
Physical Review E, 2014 We study the macroscopic behavior of two-phase flow in porous media from a phase-field model. A dissipation law is first derived from the phase-field model by homogenization. For simple channel geometry in pore scale, the scaling relation of the averaged dissipation rate with the velocity of the two-phase flow can be explicitly obtained from the model ...
Xu, Xianmin, Wang, Xiao Ping
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Numerical Simulation on Non-Darcy Flow in a Single Rock Fracture Domain Inverted by Digital Images
Geofluids, 2020 The influence of rock seepage must be considered in geotechnical engineering, and understanding the fluid flow in rock fractures is of great concern in the seepage effect investigation.
Jianli Shao +4 more
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Temporal Scale Analysis of Gas Flow in Tight Gas Reservoirs considering the Nonequilibrium Effect
Geofluids, 2021 The fractal geometry, anisotropy, discontinuity, and non-Darcy flow of tight reservoirs exert a significant effect on well production performance. In this study, the reservoir fractal geometry is represented by exponential functions on the basis of ...
Binglin Li +4 more
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Study on Non-darcy Seepage Mechanism of Gas Migration in Coal
Meikuang Anquan, 2020 Under different confining pressures, gas seepage tests are carried out, and these tests are used to discuss gas seepage mechanism in coal. The tested and theoretical results show that under different confining pressures, gas seepage laws are consistent ...
WEI Le
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Study on the REV Size of Fractured Rock in the Non-Darcy Flow Based on the Dual-Porosity Model
Geofluids, 2018 For the problem of whether the representative elementary volume (REV) obtained in the Darcy flow is also applicable to the case of the non-Darcy flow, the study on the REV size within the non-Darcy flow is proposed tentatively.
Yuan Wang, Yu-long Niu, Qiang Feng
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Advances in Materials Science and Engineering, 2022 In order to study the variations of the non-Darcy flow permeability coefficient and the porosity of permeable friction courses (PFCs), as well as the effects of the coupled seepage and stress fields on them, repeated uniaxial compression tests were ...
Zhang Xingmei, Li Yarui, Yang Datian
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Advances in Civil Engineering, 2020 In this paper, the transient pulse test is used to study the permeability and hydromechanical coupling effect of the fractured limestone. The permeability parameters (permeability, β factor of non-Darcy flow, and acceleration coefficient) of non-Darcy ...
JianChao Cheng +4 more
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A Study of the Non-Linear Seepage Problem in Porous Media via the Homotopy Analysis Method
Energies, 2023 A non-Darcy flow with moving boundary conditions in a low-permeability reservoir was solved using the homotopy analysis method (HAM), which was converted into a fixed-boundary mathematical model via similarity transformation.
Xiangcheng You +3 more
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