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Author : A. S. Kondratʹeva
Publisher : Unknown
Page : 20 pages
File Size : 44,5 Mb
Release : 1954
Category : Snow
ISBN : ERDC:35925002207907
Author : Sadik Kakaç,Birol Kilkis,Frank A. Kulacki,Faruk Annç
Publisher : Springer Science & Business Media
Page : 1083 pages
File Size : 42,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401132206
The rapid growth of literature on convective heat and mass transfer through porous media has brought both engineering and fundamental knowledge to a new state of completeness and depth. Additionally, several new questions of fundamental merit have arisen in several areas which bear direct relation to further advancement of basic knowledge and applications in this field. For example, the growth of fundamental heat transfer data and correlations for engineering use for saturated media has now reached the point where the relations for heat transfer coefficients and flow parameters are known well enough for design purposes. Multiple flow field regimes in natural convection have been identified in several important enclosure geometries. New questions have arisen on the nature of equations being used in theoretical studies, i. e. , the Validity of Darcy assumption is being brought into question; Wall effects in high and low velocity flow fields have been found to play a role in predicting transport coefficients; The formulation of transport problems in fractured media are being investigated as both an extension of those in a homogeneous medium and for application in engineering systems in geologic media and problems on saturated media are being addressed to determine their proper formulation and solution. The long standing problem of how to adequately formulate and solve problems of multi-phase heat and mass transfer in heterogeneous media is important in the technologies of chemical reactor engineering and enhanced oil recovery.
Author : D.A. Nield,Adrian Bejan
Publisher : Springer Science & Business Media
Page : 418 pages
File Size : 47,9 Mb
Release : 2013-11-11
Category : Science
ISBN : 9781475721751
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.
Author : H.G. Jones,W.J. Orville-Thomas
Publisher : Springer Science & Business Media
Page : 748 pages
File Size : 42,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400939479
In recent years, much concern has been expressed on the deleterious effects that anthropogenic emissions of acidic pollutants have on ecosystems of both industrialized countries and remote areas of the world. In many of these regions, seasonal snowcover is a major factor in the transfer of atmospheric pollutants, either to terrestrial and aquatic ecosystems or to the more permanent reservoirs of glaciers and ice sheets. The recognition of the role that seasonal snowcovers can thus play in the chemical dynamics of whole ecosystems was recently echoed by the Committee on Glaciology of the National Research Council (National Academy of Sciences, National Academy of Engineering and the Institute of Medicine) which recommended that studies on "Impurities in the snowpack, their discharge into runoff, and management of the problem" be rated at the highest prority level (ref. a). It is in this context that the Advanced Research Institute (ASI) brought together scientists active in the fields of snow physics, snow chemistry and snow hydrology. The programme was structured so as to facilitate the exchange of information and ideas on the theories for the chemical evolution of seasonal snowcovers and snowmelt and on the impact of the chemical composition of the meltwaters on the different components of hydrological systems. As a consequence the ASI also attracted participants from potential users of the information that was disseminated; these were particularly concerned with the effects of snowmelt and snowcover on terrestrial biota and those of lakes and streams.
Author : Anonim
Publisher : Unknown
Page : 528 pages
File Size : 40,6 Mb
Release : 1989
Category : Arctic regions
ISBN : MINN:31951D001109599
Author : Adrian Bejan,Peter Vadász,Detlev G. Kröger
Publisher : Springer Science & Business Media
Page : 271 pages
File Size : 47,7 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9789401145930
This book describes the state of the art at the interface between energy and environmental research. The contributing authors are some of the world leaders in research and education on energy and environmental topics. The coverage is worth noting for its breadth and depth. The book begins with the latest trends in applied thermodynamics: the methods of exergy analysis, entropy generation minimization and thermoeconomics. It continues with the most modern developments in energy processing and conservation techniques: heat transfer augmentation devices, inverse thermal design, combustion and heat exchangers for environmental systems. The environmental impact of energy systems is documented in a diversity of applications such as the flow of hazardous waste through cracks and porous media, thermally induced flows through coastal waters near power plants, and lake ecology in the vicinity of pumped storage systems. The book outlines new research directions such as the manufacturing of novel materials from solid waste, advances in radiative transport, the measurement of convective heat transfer in gas turbines and environmentally acceptable refrigerants. The book is rich in engineering design data that make a concrete statement on topics of world wide interest, e.g., toxic emissions, the depletion of energy resources, global environmental change (global warming), and future trends in the power generation industries. Written by leaders in research and education, this book is an excellent text or supplement for undergraduate and graduate courses on energy engineering and environmental science.
Author : Kolumban Hutter,Yongqi Wang,Hans Beer
Publisher : Springer Science & Business Media
Page : 642 pages
File Size : 54,5 Mb
Release : 1999-08-11
Category : Science
ISBN : 3540663339
This book consists of peer-reviewed articles and reviews presented as lectures at the Sixth International Symposium on Thermal Engineering and Sciences for Cold Regions in Darmstadt, Germany. It addresses all relevant aspects of thermal physics and engineering in cold regions, such as the Arctic regions. These environments present many unique freezing and melting phenomena and the relevant heat and mass transfer processes are of basic importance with respect to both the technological applications and the natural context in which they occur. Intended for physicists, engineers, geoscientists, climatologists and cryologists alike, these proceedings cover topics such as: ice formation and decay, heat conduction with phase change, convection with freezing and melting, thermal properties at low temperature, frost heave and permafrost, climate impact in cold regions, thermal design of structures, bio-engineering in cold regions, and many more.
Author : Matthew Sturm,Cold Regions Research and Engineering Laboratory (U.S.)
Publisher : Unknown
Page : 96 pages
File Size : 46,8 Mb
Release : 1991
Category : Depth hoar
ISBN : WISC:89059270157
Author : David McClung,Peter A. Schaerer
Publisher : The Mountaineers Books
Page : 350 pages
File Size : 48,7 Mb
Release : 2006
Category : Sports & Recreation
ISBN : 0898868092
Technical yet accessible, The Avalanche Handbook, 3rd Edition, covers the formation, character, effects, and control of avalanches; rescue techniques; and research on understanding and surviving avalanches. Illustrated with nearly 200 updated illustrations, photos and examples, the revised edition offers exhaustive information on contributing weather and climate factors, snowpack analysis, the newest transceiver search techniques, and preventative and protective measures, including avalanche zoning and control. It contains new information on the unique characteristics of alpine snow, snow slab instability, terrain variables, skier triggering of avalanches, and the nature of avalanche motion. Plus brand-new chapters on the elements of backcountry avalanche forecasting and the decision-making process.
Author : Anonim
Publisher : Unknown
Page : 8 pages
File Size : 46,7 Mb
Release : 1984
Category : Cold regions
ISBN : UCR:31210025020445
Author : Donald A. Nield,Adrian Bejan
Publisher : Springer Science & Business Media
Page : 572 pages
File Size : 47,5 Mb
Release : 1999
Category : Science
ISBN : 0387984437
This book provides a user-friendly introduction to convection in porous media, such as fibrous insulation, geological strata, and catalytic reactors with applications in building insulation, energy storage, nuclear-waste disposal, coal and grain storage, chemical reactor engineering, groundwater flow, and convection in snow. The presentation is self-contained, requiring only routine classical mathematics and the basics of fluid mechanics and heat transfer. 264 illus.
Author : Anonim
Publisher : Unknown
Page : 1328 pages
File Size : 51,7 Mb
Release : 1989
Category : Government publications
ISBN : UIUC:30112063914185
Author : United States. Superintendent of Documents
Publisher : Unknown
Page : 1328 pages
File Size : 48,9 Mb
Release : 1989
Category : Government publications
ISBN : MINN:31951T002181213
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Author : Adrian E. Scheidegger
Publisher : Springer Science & Business Media
Page : 446 pages
File Size : 52,8 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642756597
The surface features of the Earth are commonly split into two categories, the first of which comprises those features that are due to processes occurring inside the solid Earth (endogenic features) and the second those that are due to processes occurring outside the solid Earth (exogenic features). Specifically, the endogenic features are treated in the science of geodynamics, the exogenic features in the science of geomorphology. I have treated the theoretical aspects of the endogenic features in my Principles of Geodynamics, and it is my aim to supplement my earlier book with a discussion of the theory of the exogenic features, the taxonomy of the latter having been discussed in my Systematic Geomorphology. It is my hope that the three books will together pre sent a reasonably coherent, if necessarily incomplete, account of theoretical geology. Contrary to endogenic phenomena, exogenic processes can often be directly observed as they occur: the action of a river, the develop ment of a slope, and the evolution of a shore platform are all suffi ciently rapid so that they can be seen as they take place. This has the result that in geomorphology one is generally on much less specula tive ground regarding the mechanics of the processes at work than one is in geodynamics.
Author : Anonim
Publisher : Unknown
Page : 356 pages
File Size : 49,5 Mb
Release : 1980
Category : Glaciers
ISBN : MINN:319510005696958
