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 Convection in Porous Media written by Donald A. Nield and published by Springer. This book was released on 2017-03-15 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt: This updated edition of a widely admired text provides a user-friendly introduction to the field that requires only routine mathematics. The book starts with the elements of fluid mechanics and heat transfer, and covers a wide range of applications from fibrous insulation and catalytic reactors to geological strata, nuclear waste disposal, geothermal reservoirs, and the storage of heat-generating materials. As the standard reference in the field, this book will be essential to researchers and practicing engineers, while remaining an accessible introduction for graduate students and others entering the field. The new edition features 2700 new references covering a number of rapidly expanding fields, including the heat transfer properties of nanofluids and applications involving local thermal non-equilibrium and microfluidic effects.
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 Advances in Thermofluids and Renewable Energy written by Pinakeswar Mahanta and published by Springer Nature. This book was released on 2021-10-21 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the select proceedings of the International Conference on Recent Trends in Developments of Thermofluids and Renewable Energy (TFRE 2020). The major topics covered include aerodynamics, alternate energy, bio fuel, bio heat transfer, computational fluid dynamics, control mechanism for constant power generation, and energy storage. The book also discusses latest developments in the fields of electric vehicles, hybrid power systems, and solar and renewable energy. Given the scope of its contents, this book will be useful for students, researchers, and professionals interested in the field of thermofluids and renewable energy resources.
Download or read book Journal of Heat Transfer written by and published by . This book was released on 2008 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Transport in Porous Media written by Clifford K. Ho and published by Springer Science & Business Media. This book was released on 2006-10-07 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: CLIFFORD K. HOAND STEPHEN W. WEBB Sandia National Laboratories, P. O. Box 5800, Albuquerque, NM 87185, USA Gas and vapor transport in porous media occur in a number of important applications includingdryingofindustrialandfoodproducts,oilandgasexploration,environm- tal remediation of contaminated sites, and carbon sequestration. Understanding the fundamental mechanisms and processes of gas and vapor transport in porous media allows models to be used to evaluate and optimize the performance and design of these systems. In this book, gas and vapor are distinguished by their available states at stan- ? dard temperature and pressure (20 C, 101 kPa). If the gas-phase constituent can also exist as a liquid phase at standard temperature and pressure (e. g. , water, ethanol, toluene, trichlorothylene), it is considered a vapor. If the gas-phase constituent is non-condensable at standard temperature and pressure (e. g. , oxygen, carbon di- ide, helium, hydrogen, propane), it is considered a gas. The distinction is important because different processes affect the transport and behavior of gases and vapors in porous media. For example, mechanisms specific to vapors include vapor-pressure lowering and enhanced vapor diffusion, which are caused by the presence of a g- phase constituent interacting with its liquid phase in an unsaturated porous media. In addition, the “heat-pipe” exploits isothermal latent heat exchange during evaporation and condensation to effectively transfer heat in designed and natural systems.
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Continuum Mechanics and Applications in Geophysics and the Environment written by Brian Straughan and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topics covered include soil mechanics and porous media, glacier and ice dynamics, climatology and lake physics, climate change as well as numerical algorithms. The book, written by well-known experts, addresses researchers and students interested in physical aspects of our environment.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Transfer Reviews 1976 1986 written by E. R. G. Eckert and published by Wiley-Interscience. This book was released on 1990-03-23 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continuing the annual review work started in 1954 at the University of Minnesota's Heat Transfer Laboratory, this prestigous volume collates the reviews from the International Journal of Heat and Mass Transfer from 1976 through 1986. Together with a comprehensive author and subject index, it provides the tools for continuous improvements in the efficiency of engineering devices, including the recent awareness of the necessity to conserve energy and to find new energy sources. As an invaluable guide for locating existing literature on important topics, this work helps engineers and students keep abreast of recent developments in specialized research areas.
Download or read book Borehole Climatology written by Louise Bodri and published by Elsevier. This book was released on 2011-08-29 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate for the 21st century is expected to be considerably different from the present and recent past. Industrialization growth combined with the increasing CO2 concentration in the atmosphere and massive deforestation are well above the values over the past several decades and are expected to further grow. Air temperature is rising rapidly well as does the weather variability producing frequent extreme events. Six of the ten warmest years occurred in the 1990s. Temperatures predicted for the 21st century ranges well above the present day value. The time period of the last 100-200 years covered by the direct meteorological observations is too short and does not provide material to reliably assess what may happen over the next hundred(s) years. A faithful prediction of the future requires understanding how climate system works, i.e. to reconstruct past climate much further in the past. Borehole paleoclimatology enables climate reconstruction of the past several millennia, unlike proxy methods provides direct past temperature assessment and can well broaden the areal range to the remote regions poorly covered with meteorological observations. Considerable debates have recently focused on the causes of the present-day warming, i.e. to distinguish between the natural and anthropogenic contribution to the observed temperature increase, eventually to quantify their regional distribution. Complex interpretation of borehole data with the proxies and additional socio-economic information can hopefully help. On observed data taken in various places all over the world we demonstrate suitable examples of the interaction between the subsurface temperature response to time changes in vegetation cover, land-use (farming) and urbanization. Precise temperature-time monitoring in shallow subsurface can further provide the magnitude of the present-day warming within relatively short time intervals. As far as we know, there exists so far no book dealing entirely with the subject of the Borehole climatology. Only relatively rarely this method is mentioned in otherwise plentiful literature on climate reconstruction or on climate modelling. There are, however, series of papers focussing on various borehole--climate related studies in numerous journals (e.g. Global and Planetary Change, Climate Change, Tectonophysics, Journal of Geophysical Research, Geophysical Research Letters, etc). Time to time a special issue appears to summarize papers on this topic presented during specialized symposia. Key Features - Description of a new useful alternative paleoclimate reconstruction method - A suitable source of information for those wishing to learn more about climate change - Material for lecturing and use in the classroom - Ample practical examples of borehole temperature inversions worldwide - Ample illustrations and reference list - Authors have a good knowledge of the problem based on more than 20 years of experience, one of them actually pioneered the method Description of a new useful alternative paleoclimate reconstruction method A suitable source of information for those wishing to learn more about climate change Material for lecturing and use in the classroom Ample practical examples of borehole temperature inversions worldwide Ample illustrations and reference list Authors have a good knowledge of the problem based on more than 20 years of experience, one of them actually pioneered the method
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 Heat Transfer Problems in Nuclear Waste Management written by Edward V. McAssey and published by . This book was released on 1987 with total page 68 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 Cellular and Porous Materials written by Andreas Öchsner and published by John Wiley & Sons. This book was released on 2008-11-21 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing the reader with a solid understanding of the fundamentals as well as an awareness of recent advances in properties and applications of cellular and porous materials, this handbook and ready reference covers all important analytical and numerical methods for characterizing and predicting thermal properties. In so doing it directly addresses the special characteristics of foam-like and hole-riddled materials, combining theoretical and experimental aspects for characterization purposes.
Download or read book Buoyancy Induced Flow about a Horizontal Surface Submerged in Porous Medium Saturated with Cold Water written by Dong-Shiun Lin and published by . This book was released on 1983 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
