Download or read book Experimental Investigations of Rotating Flows in Porous Media written by Vickeshree Munsamy and published by . This book was released on 2001 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Investigations of the Fluid Flow Through Rotating Porous Media at Both the Microscopic Scale and the Macroscopic Scale written by Eugeniusz Sawicki and published by . This book was released on 2004 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main goal of the present work is to highlight Coriolis effects on the flow through rotating porous media at both the microscopie scale and the macroscopic scale. This report is organized in seven chapters. The aim of the first chapter is to give a review of experimental results and models already proposed about flow and transport phenomena in rotating porous media. Chapter 2 is devoted to a brief presentation of the homogenization theory. We focus our attention on the homogenization method of multiple scale of expansions for periodic structures which has been used in Auriault (2000, 2002) to derive Darcy's law in non-Galilean frame from the description at the pore scale. The main results already published in these papers are presented in Chapter 3. ln Chapter 4, the methodology and the numerical methods that will be used in Chapters 5 and 6 in order to investigate Coriolis effects on the fluid flow at the microscopie scale, Le. on the permeability of a porous medium are presented. The aim of Chapters 5 and 6 is to investigate the evolution of the effective parameters rotating periodic arrays of cylinders and spheres, respectively according to their geometrical properties : the radius of cylinde or spheres, the solid volume fraction, the arrangement of cylinders (square, triangular, rectangular) or spheres (simple cubic, bodycentered cubic), and according to the angular velocity (magnitude, direction with respect to the microstructure). Chapter 7 is devoted to numerical investigations of the flow through rotating porous media at the macroscopic scale. An experimental method to determine the permeability tensor of rotating porous medium is proposed.
Download or read book The Physics of Flow Through Porous Media written by Adrian E. Scheidegger and published by . This book was released on 1974 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow and Transformations in Porous Media written by Renaud Toussaint and published by Frontiers Media SA. This book was released on 2017-02-07 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluid flow in transforming porous rocks, fracture networks, and granular media is a very active interdisciplinary research subject in Physics, Earth Sciences, and Engineering. Examples of natural and engineered processes include hydrocarbon recovery, carbon dioxide geo-sequestration, soil drying and wetting, pollution remediation, soil liquefaction, landslides, dynamics of wet or dry granular media, dynamics of faulting or friction, volcanic eruptions, gas venting in sediments, karst development and speleogenesis, ore deposit development, and radioactive waste disposal. Hydrodynamic flow instabilities and pore scale disorder typically result in complex flow patterning. In transforming media, additional mechanisms come into play: compaction, de-compaction, erosion, segregation, and fracturing lead to changes in permeability over time. Dissolution, precipitation, and chemical reactions between solutes and solids may gradually alter the composition and structure of the solid matrix, either creating or destroying permeable paths for fluid flow. A complex, dynamic feedback thus arises where, on the one hand, the fluid flow affects the characteristics of the porous medium, and on the other hand the changing medium influences the fluid flow. This Research Topic Ebook presents current research illustrating the depth and breadth of ongoing work in the field of flow and transformation in porous media through 15 papers by 72 authors from around the world. The body of work highlights the challenges posed by the vast range of length- and time-scales over which subsurface flow processes occur. Importantly, phenomena from each scale contribute to the larger-scale behavior. The flow of oil and gas in reservoirs, and the flow of groundwater on catchment scale is sensitively linked to pore scale processes and material heterogeneity down to the micrometer scale. The geological features of the same reservoirs and catchments evolved over millions of years, sometimes as a consequence of cracking and fracture growth occurring on the time scale of microseconds. The research presented by the authors of this Research Topic represents a step toward bridging the separation of scales as well as the separation of scientific disciplines so that a more unified picture of flow and transformation in porous media can start to emerge.
Download or read book Physics of Flow in Porous Media written by Jens Feder and published by Cambridge University Press. This book was released on 2022-10-06 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: An invaluable reference for graduate students and academic researchers, this book introduces the basic terminology, methods and theory of the physics of flow in porous media. Geometric concepts, such as percolation and fractals, are explained and simple simulations are created, providing readers with both the knowledge and the analytical tools to deal with real experiments. It covers the basic hydrodynamics of porous media and how complexity emerges from it, as well as establishing key connections between hydrodynamics and statistical physics. Covering current concepts and their uses, this book is of interest to applied physicists and computational/theoretical Earth scientists and engineers seeking a rigorous theoretical treatment of this topic. Physics of Flow in Porous Media fills a gap in the literature by providing a physics-based approach to a field that is mostly dominated by engineering approaches.
Download or read book Experimental Investigation of Flow Between Rotating Spheres written by Adnan Mohammad Waked and published by . This book was released on 1976 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Numerical Investigations of the Fluid Flow Through Rotating Porous Media at Both the Microscopic Scale and the Macroscopic Scale written by Eugeniusz Sawicki and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Analytical Investigations of Flows in Porous Media Final Report August 15 1993 August 15 1996 written by and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report consists first of a discussion of specific results. Following that is a discussion of important issues. During the period July 1993--present, the authors have developed Magnetic Resonance Imaging (MRI) and other experimental techniques for the study of porous flow (Section 1). These techniques include fast spin echo methods and precision temperature control and measurements systems for use in the MRI environment. They have applied these techniques to extensive studies of Porous Media Convection (PMC) which they discuss below. Sections 2--4 summarize important experimental results, and Section 5 lists publications and related information. These studies clearly point to the need for improved models for porous flow. In related studies using a special kind of shadowgraph technique, they found corroborating support for the effects of microstructure on PMC and the need for improved models of porous flow, and of PMC in particular. They initially studied convective flows for pure fluids (water), and more recently, they have begun studies of miscible binary mixtures.
Download or read book Experimental and Numerical Investigations of Rotating Flows with Deformable Free Surface written by Yang Wen and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a contribution to the understanding of instabilities in rotating flows with deformable free surface. The configuration under study is a cylindrical container partially filled with water or water-glycerin mixture and the rotation is driven by a disk located at the bottom. In such flow, several families of instability patterns can be triggered depending on the flow parameters (Froude and Reynolds numbers and aspect ratio). As a mean of investigation, steady and unsteady simulations are conducted using the two in-house codes ROSE and Sunfluidh, in conjunction with experiments. The novelty lies in two-phase numerical simulations with strongly deformed interface and large density ratio between the phases, in accurate surface height and Laser-Doppler Velocimetry measurements, and in cross validations between numerical and experimental techniques. The base flow is first carefully described. Axisymmetric steady solutions show the structure of the rotating flow: a central solid body rotation and a toroidal flow cell located at the periphery, the intensity and geometry of which are characterized. Focusing on Reynolds numbers large enough so that boundary layers form at solid walls, two additional layers are described: an internal layer at the edge of the central region and a layer under the free surface never reported before. This flow structure is shown to be robust as Froude number is varied. Three-dimensional unsteady simulations reveal that the time and space averaged flow shows many similarities with steady axisymmetric solutions and that the surface remains almost flat even though three-dimensional large structure instabilities have developed in the bulk. Through this full numerical approach corroborated by velocity measurements, the flow structure is thus clarified and compared to the simplified models used in the literature. The transient spin-up dynamics of a fluid from rest are also investigated for two configurations, namely Newton's bucket and the bottom-driven flow. Experimental surface height and velocity evolution are found in very good agreement with axisymmetric unsteady simulations. These results are meant to serve as a benchmark for unsteady rotating two-phase flow simulations. Large amplitude three-dimensional surface deformation waves known as rotating polygons are eventually studied experimentally. These patterns are usually observed at very large Reynolds number. Conducting investigations in more viscous flow regimes, the link between bulk and surface polygon instabilities is tentatively elucidated. Through a spectral analysis of surface deformation and velocity measurements, the phase-velocity to disk speed ratio is found to be close to 1/3 for rotating polygons whereas it is 2/3 for the bulk instability.
Download or read book Numerical and Experimental Investigation of Streamline Flow in Cylindrical Porous Media written by Earl Wayne Janes and published by . This book was released on 1980 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of Variable density driven Flow in Layered Porous Media written by Christopher Howard Swartz and published by . This book was released on 1993 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1971 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of Turbulent Flow in a Rotating Cylinder During Spindown to Rest written by M. Mahboob Alam and published by . This book was released on 1985 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Investigation of Dispersion Phenomena in Laminar Flow Through Porous Media written by Mohamed Nour Eddine Rifai and published by . This book was released on 1956 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental Investigation of Two Phase Flow in Porous Media effects of Surfactants on Immiscible Displacement Processes at the Pore Network Scale written by Yanping Ren and published by . This book was released on 2004 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Investigation of the Flow in the Boundary Layer Above a Rotating Disc with Compliant Characteristics in Water written by Andrew John Colley and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluid Flow and Heat Transfer in Rotating Porous Media written by Peter Vadasz and published by Springer. This book was released on 2015-07-28 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Book concentrates the available knowledge on rotating fluid flow and heat transfer in porous media in one single reference. Dr. Vadasz develops the fundamental theory of rotating flow and heat transfer in porous media and introduces systematic classification and identification of the relevant problems. An initial distinction between rotating flows in isothermal heterogeneous porous systems and natural convection in homogeneous non-‐isothermal porous systems provides the two major classes of problems to be considered. A few examples of solutions to selected problems are presented, highlighting the significant impact of rotation on the flow in porous media.
