Results 31 to 40 of about 334,380 (241)

Chaotic Advection at the Pore Scale: Mechanisms, Upscaling and Implications for Macroscopic Transport [PDF]

open access: yes, 2016
The macroscopic spreading and mixing of solute plumes in saturated porous media is ultimately controlled by processes operating at the pore scale. Whilst the conventional picture of pore-scale mechanical dispersion and molecular diffusion leading to ...
Lester, D. R.   +2 more
core   +2 more sources

Coupling of two-phase flow in fractured-vuggy reservoir with filling medium

open access: yesOpen Physics, 2017
Caves in fractured-vuggy reservoir usually contain lots of filling medium, so the two-phase flow in formations is the coupling of free flow and porous flow, and that usually leads to low oil recovery.
Xie Haojun   +4 more
doaj   +1 more source

Deformation and rupture of microcapsules flowing through constricted capillary

open access: yesScientific Reports, 2021
The dynamics of deformable microcapsules flowing through constricted channels is relevant in target delivery of chemicals in physiological systems, porous media, microfluidic medical diagnostic devices and many other applications. In some situations, the
Bruna C. Leopércio   +2 more
doaj   +1 more source

Nonextensive diffusion as nonlinear response [PDF]

open access: yes, 2005
The porous media equation has been proposed as a phenomenological ``non-extensive'' generalization of classical diffusion. Here, we show that a very similar equation can be derived, in a systematic manner, for a classical fluid by assuming nonlinear ...
Abe S.   +7 more
core   +2 more sources

Upscaled Lattice Boltzmann Method for Simulations of Flows in Heterogeneous Porous Media

open access: yesGeofluids, 2017
An upscaled Lattice Boltzmann Method (LBM) for flow simulations in heterogeneous porous media at the Darcy scale is proposed in this paper. In the Darcy-scale simulations, the Shan-Chen force model is used to simplify the algorithm. The proposed upscaled
Jun Li, Donald Brown
doaj   +1 more source

Influence of micro‐pore structure in tight sandstone reservoir on the seepage and water‐drive producing mechanism—a case study from Chang 6 reservoir in Huaqing area of Ordos basin

open access: yesEnergy Science & Engineering, 2019
To study the influence of pore structure on the seepage and water‐drive producing mechanisms, various methods were combined to describe the micro‐pore structure in the Chang 6 tight sandstone reservoir in the Huaqing area, Ordos Basin, China.
Xiaoxia Ren   +3 more
doaj   +1 more source

New Understanding of Transient Pressure Response in the Transition Zone of Oil-Water and Gas-Water Systems

open access: yesGeofluids, 2018
Well test analysis requires a preselected model, which relies on the context input and the diagnostic result through the pressure logarithmic derivative curve.
Wenbin Xu   +3 more
doaj   +1 more source

Transient flows in active porous media [PDF]

open access: yes, 2017
Stimuli-responsive materials that modify their shape in response to changes in environmental conditions -- such as solute concentration, temperature, pH, and stress -- are widespread in nature and technology.
Jensen, Kaare H., Kosmidis, Lefteris I.
core   +2 more sources

Research on carbonate reservoir interwell connectivity based on a modified diffusivity filter model

open access: yesOpen Physics, 2017
According to the solution of dual-porosity model, a diffusivity filter model of carbonate reservoir was established, which can effectively illustrate the injection signal attenuation and lag characteristic.
Wang Wei, Yao Jun, Li Yang, Lv Aimin
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

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