Pore Scale Dynamics Of Immiscible Two Phase Flow On Porous And Fractured Media
DOWNLOAD
Download Pore Scale Dynamics Of Immiscible Two Phase Flow On Porous And Fractured Media PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Pore Scale Dynamics Of Immiscible Two Phase Flow On Porous And Fractured Media book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Pore Scale Dynamics Of Immiscible Two Phase Flow On Porous And Fractured Media
DOWNLOAD
Author : Qingqing Gu
language : en
Publisher:
Release Date : 2019
Pore Scale Dynamics Of Immiscible Two Phase Flow On Porous And Fractured Media written by Qingqing Gu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Immiscible Three Phase Flow In Porous Media
DOWNLOAD
Author : Alessio Scanziani
language : en
Publisher:
Release Date : 2020
Immiscible Three Phase Flow In Porous Media written by Alessio Scanziani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Capillary Flows In Heterogeneous And Random Porous Media
DOWNLOAD
Author : Rachid Ababou
language : en
Publisher: John Wiley & Sons
Release Date : 2019-02-06
Capillary Flows In Heterogeneous And Random Porous Media written by Rachid Ababou and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-06 with Technology & Engineering categories.
Capillary phenomena occur in both natural and human-made systems, from equilibria in the presence of solids (grains, walls, metal wires) to multiphase flows in heterogeneous and fractured porous media. This book, composed of two volumes, develops fluid mechanics approaches for two immiscible fluids (water/air or water/oil) in the presence of solids (tubes, joints, grains, porous media). Their hydrodynamics are typically dominated by capillarity and viscous dissipation. This first volume presents the basic concepts and investigates two-phase equilibria, before analyzing two-phase hydrodynamics in discrete and/or statistical systems (tubular pores, planar joints). It then studies flows in heterogeneous and stratified porous media, such as soils and rocks, based on Darcy’s law. This analysis includes unsaturated flow (Richards equation) and two-phase flow (Muskat equations). Overall, the two volumes contain basic physical concepts, theoretical analyses, field investigations and statistical and numerical approaches to capillary-driven equilibria and flows in heterogeneous systems
Pore Scale Experimental Investigations Of Immiscible Displacements In Capillary Tubes And Porous Micromodels
DOWNLOAD
Author : Mohammad Heshmati
language : en
Publisher:
Release Date : 2017
Pore Scale Experimental Investigations Of Immiscible Displacements In Capillary Tubes And Porous Micromodels written by Mohammad Heshmati and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Fluid dynamics categories.
Owing to the complicated nature of a porous medium, study of dynamics of fluid flow in such structures is not straightforward. Therefore, researchers have been using simplified one-dimensional (1D) and two-dimensional (2D) porous media models like capillary tubes, micro-models and micro-fluidic devices to perform such studies. We utilized both of these categories to investigate different parameters affecting the flow of fluids in a porous medium. In 1D, capillary tubes of different cross-sectional shapes and several wetting fluids are used to investigate the evolution of dynamic contact angle with the meniscus velocity. The meniscus rise vs. time curves produced by Washburn's equation are improved by implementing our experimentally measured dynamic contact angle values into the Washburn's original equation. A general empirical correlation is presented for variation of normalized rise with dynamic contact angle as well. In the second category, a novel two-phase, two-field-of-view micro-Particle-Image-Velocimetry system is developed. It allows simultaneous study of flow fields at the pore- and micromodel-scales and provides a deeper insight into the distribution of fluids. The effect of change of flow rate on shear stress at the interface of invading and defending fluids in a designed pore-doublet configuration made of Polydimethylsiloxane (PDMS) is studied. The impact of local perturbations of velocity fields on displacement of non-wetting phase and the residual trapping is also discussed. We show that these effects produce extensively different distributions of the trapped non-wetting phase globules. A modified 2D X-ray micro-computed tomography image of Bentheimer sandstone is replicated on PDMS. Single-phase velocity measurements in these models afford valuable insights into the complicated flow patterns through a porous medium; whereas in two-phase flow tests, in addition to resolving the velocity fields in both fluids, effects of changes in invading wetting phase flow rate and viscosity on pore fluid configuration and residual trapping is investigated as well. Not only these results provide a valuable understanding of the complexities of flow through porous systems, but also they can be used to validate the numerical models of fluid flow through porous systems.
Multiscale Direct Numerical Modeling Of Pore Scale And Darcy Scale Multiphase Flow In Porous Media
DOWNLOAD
Author : Soheil Esmaeilzadeh
language : en
Publisher:
Release Date : 2021
Multiscale Direct Numerical Modeling Of Pore Scale And Darcy Scale Multiphase Flow In Porous Media written by Soheil Esmaeilzadeh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.
Improving our understanding about the evolution of multiphase flow in porous media is crucial for many applications such as extraction of hydrocarbons and geothermal energy from subsurface reservoirs, ground-water remediation, CO2 capture and storage, and transport of contaminants in aquifers and soil. Although such applications have implications at very large length scales, e.g., in the orders of kilometers, they strongly depend on the complex physics and dynamics that mainly occur at the pore-scale. Studying multiphase flow at the pore-scale using direct numerical modeling requires developing accurate numerical frameworks that not only honor conservation laws of mass, momentum, and energy, but also can precisely represent and track fluid-fluid interfaces in space and time in the presence of complex embedded solid geometries. In this dissertation, we consider incompressible and immiscible two-phase flows under isothermal conditions and in electrokinetic equilibrium. We solve for the conservation of mass and momentum, and using an immersed boundary approach account for the presence of embedded solid boundaries. We use a two-phase flow modeling approach based on the level-set method to capture the interfacial dynamics of the flow. Using our numerical framework, we first validate recent experimental works on phase separation in the form of pinch-off at the pore-scale, then we extend such experimental observations to a wide range of wettability conditions. For the phase separation in the form of pinch-off, we provide a quantitative study of the emerging length and time scales and their dependence on the wettability conditions, capillary effects, and viscous forces. Afterward, we present a subgrid thin-film model in order to resolve the interfacial dynamics of thin-films on curved solid surfaces in porous media. We couple a Navier-Stokes solver with a topology-preserving level-set method and a sub-grid thin-film model in order to simulate immiscible two-phase pore-scale flows in the presence of thin-films on curved solid surfaces. We validate our proposed subgrid thin-film model for the cases of static and dynamic fluid-fluid interfaces in capillary tubes (both drainage and imbibition) in the presence of curved solid surfaces. We compare the thin-film profile obtained by the subgrid thin-film model versus the profile numerically resolved by refined computational grid cells spanning the subgrid resolution of the thin-film and achieve a great agreement. Subsequently, we consider granular porous media with homogeneous and heterogeneous wettability conditions. We investigate the influence of capillary and viscous forces as well as wettability conditions on the interfacial dynamics, displacement efficiency, phase trapping phenomenon, and interfacial instabilities. For the heterogeneous wettability conditions, we consider granular media with mixed-wet conditions as well as fractional (patterned) wettability conditions. Finally, at the end of this dissertation, we present a physics-constrained super-resolution framework that can super-resolve numerical simulation data in both space and time. We test the robustness of our proposed super-resolution framework for super-resolving simulation data obtained for a turbulent flow case of Rayleigh-Bénard convection problem as well as a case of two-phase flow interfacial dynamics in porous media for a subsurface reservoir.
Flow In Porous Rocks
DOWNLOAD
Author : Andrew W. Woods
language : en
Publisher: Cambridge University Press
Release Date : 2015
Flow In Porous Rocks written by Andrew W. Woods and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Business & Economics categories.
This book provides simplified models explaining flows in heterogeneous rocks, their physics and energy production processes, for researchers, energy industry professionals and graduate students.
Dynamic Effect In Two Phase Flow In Porous Media
DOWNLOAD
Author : Twan Willem Jacobus Gielen
language : en
Publisher:
Release Date : 2007
Dynamic Effect In Two Phase Flow In Porous Media written by Twan Willem Jacobus Gielen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Dynamic Pore Level Modeling Of Two Phase Flow Through Porous Media
DOWNLOAD
Author : Mohit Singh
language : en
Publisher:
Release Date : 2001
Dynamic Pore Level Modeling Of Two Phase Flow Through Porous Media written by Mohit Singh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Porous materials categories.
Dynamic Pore Network Modeling Of Two Phase Flow And Solute Transport In Disordered Porous Media And Rough Walled Fractures
DOWNLOAD
Author : Yanbin Gong
language : en
Publisher:
Release Date : 2021
Dynamic Pore Network Modeling Of Two Phase Flow And Solute Transport In Disordered Porous Media And Rough Walled Fractures written by Yanbin Gong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Carbon sequestration categories.
Reliable, physics-based predictions of two-phase flow and solute transport properties (e.g., relative permeability and dispersion coefficient) of porous media and fractures are crucial for reducing the uncertainty in performance predictions of many subsurface applications such as carbon dioxide (CO2) sequestration, enhanced oil recovery, and remediation of contaminated groundwater. However, problems of multi-phase flow in disordered porous media are exceedingly difficult due to, for instance, complicated pore space geometries and topologies, wettability conditions, and fluid–fluid displacements. Furthermore, even though the majority of subsurface reservoirs have natural or induced fractures, there is still no consensus regarding two-phase fluid flow behaviors in rough-walled fractures because of the intricate aperture-field geometries and their impacts on fluid–fluid interactions. Therefore, the development of physics-based models that can accurately predict flow and transport properties of disordered porous media and rough-walled fractures is warranted. In this study, we developed two new heavily-parallelized, dynamic pore-scale modeling platforms that can better account for the underlying displacement and transport physics and thereby predict the corresponding macroscopic properties. Both modeling frameworks incorporate many advanced features that have not been collectively used in previous dynamic models. For instance, they rigorously solve for the capillary, viscous, and buoyancy forces, integrate detailed descriptions of pore-scale fluid displacement dynamics, and explicitly account for flow through wetting layers forming in corners and rough surfaces of pore spaces. These modeling platforms further benefit from heavy parallelization and advanced domain decomposition techniques to achieve computational efficiency. We utilize the dynamic models to carry out various two-phase displacement simulations in core-sized pore networks constructed from high-resolution x-ray images of sandstone rock samples and a Berea sandstone fracture. Measured two-phase relative permeability data and fluid occupancy maps for both primary drainage and imbibition displacements are employed to validate our network models and probe their predictive capabilities. Afterward, the validated models are utilized to investigate a series of critical two-phase flow and solute transport properties including fluid trapping behaviors in porous media and rough-walled fractures under a broad range of fluid properties and flow conditions, relative permeability curves of single fractures with different geometric features, and dispersive solute transport behaviors in a sandstone rock sample under both single- and two-phase fluid configurations. These findings are of fundamental importance to understanding the physics governing fluid flow and solute transport in subsurface systems as well as field-scale predictions of two-phase flow in porous media and fractures.
Fractured Porous Media
DOWNLOAD
Author : Pierre M. Adler
language : en
Publisher: Oxford University Press, USA
Release Date : 2013
Fractured Porous Media written by Pierre M. Adler and has been published by Oxford University Press, USA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Science categories.
This book provides a systematic treatment of the geometrical and transport properties of fractures, fracture networks, and fractured porous media. It is divided into two major parts. The first part deals with geometry of individual fractures and of fracture networks. The use of the dimensionless density rationalizes the results for the percolation threshold of the networks. It presents the crucial advantage of grouping the numerical data for various fracture shapes. The second part deals mainly with permeability under steady conditions of fractures, fracture networks, and fractured porous media. Again the results for various types of networks can be rationalized by means of the dimensionless density. A chapter is dedicated to two phase flow in fractured porous media.