Download or read book Buoyancy Driven Flows in Heterogeneous Porous Media written by Bharath S. P. Kattemalalawadi and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: To improve the confidence of subsurface storage of fluids such as carbon-dioxide, acid-gas and hydrogen at various geological sites, a proper fluid dynamic understanding of flow phenomena occurring because of injecting these source fluids into a porous medium is necessary. While many advancements have been made in predicting the fluid flows in a uniform porous medium, the flow dynamics inside a non-uniform porous media remains less well understood. In this Thesis, we use theory, numerical simulations and experiments to clarify the fluid mechanics of injecting a source fluid into a saturated, multi-layered porous media in which each of the adjacent layers are separated by a sharp permeability jump. Throughout this study, we have considered small density differences between the source and ambient fluids (satisfying the Boussinesq approximation) and both these fluids are completely miscible with each other. The goal of the study is to inform three practical questions. The first research component is to predict the early-time spreading dynamics of plume fluid striking an inclined permeability jump, within porous media having upper- and lower-layers of comparable thicknesses. The plume fluid, upon striking a permeability jump, results in a pair of oppositely directed gravity currents propagating along slope in the up- and downdip directions. To address the flow dynamics along an inclined permeable boundary, we develop a theoretical model in which we derive coupled non-linear partial differential equations describing gravity currents propagating along slope and their draining into the lower layer. The model predicts flow dynamics at both transient- and steady-state conditions. We further validate this model with similitude laboratory experiments. Experimental images show that the interface of the flow front is blurred due to hydrodynamics dispersion, and hence is not especially sharp. The implications of this observation vis-{\` a}-vis theoretical model assumptions are discussed. The second research component is to study the effect of impermeable bottom and sidewall boundaries on the dynamics of the injected fluid. For this, we construct a two-layered porous medium inside a rectangular box and conduct experiments for various combinations of the source condition, permeability jump angle and layer depth. The experiments reveal the formation of two pairs of gravity currents, one in the upper layer (propagating along the permeability jump), and the second in the lower layer (propagating along the bottom boundary of the box). The dynamical influence of one gravity current upon the other, such as the occurrence of runout-override and remobilization from a state of runout, is investigated. At later instants in time, the gravity current flows are impeded due to the vertical sidewall boundaries which allows us to distinguish between two qualitatively different filling regimes, i.e.\,sequential vs.~simultaneous filling of the upper- and lower-layers. Furthermore, parameter combinations conducive to one or the other filling regime are also identified. The third research component regards to the flow pattern inside a more complicated multi-layered porous medium, i.e.~consisting of up to five layers. For this we derive steady analytical solutions for the gravity currents formed along each of the permeability jump boundaries. The model predicts the outer envelope of the flow pattern corresponding to steady flow conditions. Finite-element based COMSOL simulations are also performed for different combinations of layer permeabilities and also by changing the permeability jump angles. The comparison of outer envelope with the theory shows good agreement. Also, the impact of adding intermediate layers of different permeabilities on the maximum span of runout and storage areas are investigated.
Download or read book Buoyancy Driven Flow in Fluid Saturated Porous Media near a Bounding Surface written by Hitoshi Sakamoto and published by Springer. This book was released on 2018-06-11 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Brief reports on heat transfer from a solid boundary in a saturated porous medium. Experiments reveal overall heat transfer laws when the flow along the wall is driven by buoyancy produced by large temperature differences, and mathematical analysis using advanced volume-averaging techniques produce estimates of how heat is dispersed in the porous zone. Engineers, hydrologists and geophysicists will find the results valuable for validation of laboratory and field tests, as well as testing their models of dispersion of heat and mass in saturated media.
Download or read book Buoyancy driven Flow in Fluid saturated Porous Media Near a Bounding Surface written by Hitoshi Sakamoto and published by . This book was released on 2005 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On Buoyancy driven Flow in Porous Media Motivated by the Energy Industry written by William John Rayward-Smith and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transverse Dispersion in Liquid Flow Through Porous Media written by Eugene Sidney Simpson and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mixing Induced by Buoyancy Driven Flows in Porous Media written by Hamid Emami Meybodi and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flow in Porous Rocks written by Andrew W. Woods and published by Cambridge University Press. This book was released on 2015 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides simplified models explaining flows in heterogeneous rocks, their physics and energy production processes, for researchers, energy industry professionals and graduate students.
Download or read book Nanofluid Flow in Porous Media written by Mohsen Sheikholeslami Kandelousi and published by BoD – Books on Demand. This book was released on 2020-08-19 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of fluid flow and heat transfer in a porous medium have been the subject of continuous interest for the past several decades because of the wide range of applications, such as geothermal systems, drying technologies, production of thermal isolators, control of pollutant spread in groundwater, insulation of buildings, solar power collectors, design of nuclear reactors, and compact heat exchangers, etc. There are several models for simulating porous media such as the Darcy model, Non-Darcy model, and non-equilibrium model. In porous media applications, such as the environmental impact of buried nuclear heat-generating waste, chemical reactors, thermal energy transport/storage systems, the cooling of electronic devices, etc., a temperature discrepancy between the solid matrix and the saturating fluid has been observed and recognized.
Download or read book Buoyancy Driven Flow in Porous Media Applied to Heat Storage and Carbon Sequestration written by Peter Dudfield and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transport Phenomena in Porous Media II written by I. Pop and published by Elsevier. This book was released on 2002-06-20 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport phenomena in porous media continues to be a field which attracts intensive research activity. This is primarily due to the fact that it plays an important and practical role in a large variety of diverse scientific applications. Transport Phenomena in Porous Media II covers a wide range of the engineering and technological applications, including both stable and unstable flows, heat and mass transfer, porosity, and turbulence. Transport Phenomena in Porous Media II is the second volume in a series emphasising the fundamentals and applications of research in porous media. It contains 16 interrelated chapters of controversial, and in some cases conflicting, research, over a wide range of topics. The first volume of this series, published in 1998, met with a very favourable reception. Transport Phenomena in Porous Media II maintains the original concept including a wide and diverse range of topics, whilst providing an up-to-date summary of recent research in the field by its leading practitioners.
Download or read book Convection in Porous Media written by Donald A. Nield and published by Springer Science & Business Media. This book was released on 2012-11-30 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt: Convection in Porous Media, 4th Edition, provides a user-friendly introduction to the subject, covering a wide range of topics, such as fibrous insulation, geological strata, and catalytic reactors. The presentation is self-contained, requiring only routine mathematics and the basic elements of fluid mechanics and heat transfer. The book will be of use not only to researchers and practicing engineers as a review and reference, but also to graduate students and others entering the field. The new edition features approximately 1,750 new references and covers current research in nanofluids, cellular porous materials, strong heterogeneity, pulsating flow, and more.
Download or read book Geological Fluid Dynamics written by Owen M. Phillips and published by Cambridge University Press. This book was released on 2009-02-19 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes fluid flow, transport and contamination in rocks and sediments, for graduate students and professionals in hydrology, water resources, geochemistry.
Download or read book Modelling Heat and Mass Flow Through Packed Pebble Beds written by Coert Johannes Visser and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work details modelling buoyancy-driven viscous flow and heat transfer through heterogeneous saturated packed pebble beds via a set of volume-averaged conservation equations in which local thermal disequilibrium is accounted for. The latter refers to the two phases considered viz. solid and fluid, differing in temperature. This is effected by describing each phase with its own governing equation. Further to the aforementioned, the governing equation set is written in terms of intrinsic volume-averaged material properties that are fully variant with respect to temperature. The heterogeneous solid phase is described with a porosity field varying from 0.39 to 0.99. The intent of the stated upper bound is to explicitly model typical packed bed near-wall phenomena such as wall-channelling and pebble-wall heat transfer as true to reality as possible, while maintaining scientific rigour. The set of coupled non-linear partial differential equations is solved via a locally preconditioned artificial compressibility method, where spatial discretisation is effected with a compact finite volume edge-based discretisation method. The latter is done in the interest of accuracy. Stabilisation is effected via JST scalar-valued artificial dissipation. This is the first instance in which an artificial compressibility algorithm is applied to modelling heat and fluid flow through heterogeneous porous materials. As a result of the aforementioned, calculation of the acoustic velocities, stabilisation scaling factors and allowable time-step sizes were revised. The developed technology is demonstrated by application to the modelling of SANA test cases, i.e. natural convective flow inside a heated porous axisymmetric cavity. Predicted results are shown to be within 12% of experimental measurements in all cases, while having an average deviation of only 3%.
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 Convection in Porous Media written by D.A. Nield and published by Springer Science & Business Media. This book was released on 2006-12-06 with total page 655 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition includes nearly 1000 new references.
Download or read book Convection in Porous Media written by D.A. Nield and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book we have tried to provide a user-friendly introduction to the topic of convection in porous media. We have assumed that the reader is conversant with the basic elements of fluid mechanics and heat transfer, but otherwise the book is self-contained. Only routine classical mathematics is employed. We hope that the book will be useful both as a review (for reference) and as a tutorial work (suitable as a textbook in a graduate course or seminar). This book brings into perspective the voluminous research that has been performed during the last two decades. The field has recently exploded because of worldwide concern with issues such as energy self-sufficiency and pollution of the environment. Areas of application include the insulation of buildings and equipment, energy storage and recovery, geothermal reservoirs, nuclear waste disposal, chemical reactor engineering, and the storage of heat-generating materials such as grain and coal. Geophysical applications range from the flow of groundwater around hot intrusions to the stability of snow against avalanches.
Download or read book Handbook of Porous Media written by Kambiz Vafai and published by CRC Press. This book was released on 2005-03-30 with total page 771 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last three decades, advances in modeling flow, heat, and mass transfer through a porous medium have dramatically transformed engineering applications. Comprehensive and cohesive, Handbook of Porous Media, Second Edition presents a compilation of research related to heat and mass transfer including the development of practical applications
