Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Development Of An Atmospheric Dispersion Model For Heavier Than Air Gas Mixtures
Download Development Of An Atmospheric Dispersion Model For Heavier Than Air Gas Mixtures full books in PDF, epub, and Kindle. Read online Development Of An Atmospheric Dispersion Model For Heavier Than Air Gas Mixtures ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Development of an Atmospheric Dispersion Model for Heavier-Than-Air Gas Mixtures by : Jerry A. Havens
Download or read book Development of an Atmospheric Dispersion Model for Heavier-Than-Air Gas Mixtures written by Jerry A. Havens and published by . This book was released on 1985 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mathematical modeling techniques use to predict atmospheric dispersion of heavy gases are reviewed and critiqued. These dispersion processes are characterized by three phases: (1) near field, negative buoyancy-domainated flow regime; (2) intermediate field, stably stratified shear flow regime; and (3) far field, passive turbulent diffusion regime. Mathematical models of laboratory and natural gravity currents are used to describe the negative buoyancy-dominated regime flow and dilution processes. A laboratory investigation of instantaneous heavy gas releases in calm air demonstrates scaling from small release volumes (0.5 cu m) to large field (2000 cu m) field releases, and is used to develop a mathematical model for the buoyancy-dominated regime. Laboratory data from stratified shear flow mixing experiments are used to develop a model for vertical diffusion of heavy gases in the atmospheric surface layer. The model concepts are consistent with the limiting passive behavior of demonstrated air pollution models. An interactive computer model for heavy gas dispersion (DEGADIS) is developed. The DEGADIS model accounts for the three regimes of heavy gas dispersion processes and can be used to simulate instantaneous, steady state, and transient releases. The model provides predictions of downwind concentration decay which are in good agreement with the full range of field experimental data currently available, and is recommended for incorporation in the Coast Guard hazard assessment computer system.
Book Synopsis Development of an Atmospheric Dispersion Model for Heavier-than-air Gas Mixtures by : Jerry A. Havens
Download or read book Development of an Atmospheric Dispersion Model for Heavier-than-air Gas Mixtures written by Jerry A. Havens and published by . This book was released on 1985 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of an Atmospheric Dispersion Model for Heavier-Than-Air Gas Mixtures. Volume 3. DEGADIS User's Manual by : Jerry A. Havens
Download or read book Development of an Atmospheric Dispersion Model for Heavier-Than-Air Gas Mixtures. Volume 3. DEGADIS User's Manual written by Jerry A. Havens and published by . This book was released on 1985 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mathematical modeling techniques used to predict atmospheric dispersion of heavier-than-air gases discussed in Volume 1 are briefly summarized; these techniques are incorporated in an interactive computer model DEGADIS. Details of DEGADIS implementation are briefly discussed. The necessary input information to simulate a heavier-than-air gas release with DEGADIS is summarized. Example simulations of a steady state and transient release are included. A list of DEGADIS self-diagnostics with suggested actions are included. A listing of DEGADIS is included along with a partial list of program variables. Guidelines for installation of DEGADIS are presented.
Book Synopsis Development of an Atmospheric Dispersion Model for Heavier-than-air Gas Mixtures: Main report by : Jerry A. Havens
Download or read book Development of an Atmospheric Dispersion Model for Heavier-than-air Gas Mixtures: Main report written by Jerry A. Havens and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of an atmospheric dispersion model for heavier-than- air gas mixtures by : J.A. Havens
Download or read book Development of an atmospheric dispersion model for heavier-than- air gas mixtures written by J.A. Havens and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of an Atmospheric Dispersion Model for Heavier-Than-Air Gas Mixtures. Volume 2. Laboratory Calm Air Heavy Gas Dispersion Experiments by : Jerry A. Havens
Download or read book Development of an Atmospheric Dispersion Model for Heavier-Than-Air Gas Mixtures. Volume 2. Laboratory Calm Air Heavy Gas Dispersion Experiments written by Jerry A. Havens and published by . This book was released on 1985 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laboratory experimental instantaneous releases of right circular cylindrical volumes of heavy gas (Freon-12/air) with initial volumes ranging from 0.034 cu m to 0.531 cu m and specific gravities ranging from 2.2 to 4.2 are described. Releases with initial height-to-diameter ratios of 0.4, 1.0, and 1.57 are reported. The heavy gas flow field surrounding the release is described by time series of gas concentration at various radial and vertical coordinates with respect to release center. Measurements of the gravity current velocities are determined from time-of-onset of measured gas concentration. Calm-air instantaneous heavy gas releases are demonstrated to scale with a characteristic length cube root of V sub i where V sub i is the initial volume, and a characteristic time (V sub i to the 1/6 power)/(sq root of the reduced gravitational acceleration). The scaled laboratory releases predict the gravity-spreading and dilution process occurring during the buoyancy-dominated flow phase of the 2000 cu/m Freon/air instantaneous releases conducted by the British Health and Safety Executive at Thorney Island, UK. The gravity spread and dilution data are used to validate the buoyancy-dominated flow submodel which is incorporated in DEGADIS, the general purpose heavy gas dispersion model developed for the Coast Guard.
Book Synopsis Mathematical Modeling and Experimental Investigation of Heavier-than-air Gas Dispersion in the Atmosphere by : Thomas O. Spicer
Download or read book Mathematical Modeling and Experimental Investigation of Heavier-than-air Gas Dispersion in the Atmosphere written by Thomas O. Spicer and published by . This book was released on 1985 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Vapor Dispersion Models for Nonneutrally Buoyant Gas Mixtures-Analysis of TFI/NH3 Test Data by : Thomas O. Spicer
Download or read book Development of Vapor Dispersion Models for Nonneutrally Buoyant Gas Mixtures-Analysis of TFI/NH3 Test Data written by Thomas O. Spicer and published by . This book was released on 1988 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Field-scale releases of pressurized anhydrous ammonia were performed by the Lawrence Livermore National Laboratories in 1983 for the U.S. Coast Guard, the Fertilizer Institute, and Environment Canada. Release rates for the four experiments ranged between 80 and 130 kilograms per second. The pressurized liquid ammonia jet formed a denser-than-air aerosol cloud. A method of determining the relative importance of jet and nonjet dispersion processes is discussed. The data from these experiments were analyzed to determine the mass flux of ammonia and the lateral and vertical concentration profile parameters for the cloud (sigma y and sigma z for the Gaussian plume model and SY and SZ for DEGADIS) at 800 meters downwind. These observed values of maximum concentration and concentration profile parameters were compared with DEGADIS and Gaussian plume model predictions. (DEGADIS is an atmospheric dispersion model designed to account for the influences of denser-than-air gases.) In addition, analysis of the experimental data indicated heat transfer to the aerosol cloud was insignificant although the cloud temperature was as low as -60 centigrade. (mjm).
Book Synopsis Development of Vapor Dispersion Models for Nonneutrally Buoyant Gas Mixtures--Analysis of USAF/N2O4 Test Data by : Thomas O. Spicer
Download or read book Development of Vapor Dispersion Models for Nonneutrally Buoyant Gas Mixtures--Analysis of USAF/N2O4 Test Data written by Thomas O. Spicer and published by . This book was released on 1986 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Air Force is taking steps to improve and update safety procedures available for use during operations involving hazardous chemicals and fuels. In support of this effort, the Lawrence Livermore National Lab. conducted two field scale releases(Eagle 3 and 6) of nitrogen tetroxide (N2O4) at the Nevada Test Site during 1983. An analysis of the chemical interaction of N2O4 with the ambient humidity and oxygen is made. The reported source mass evolution rate is adjusted to account for these reactions; the source rate for Eagle 3 is between 2.9 and 3.1 kg/s, while for Eagle 6, the source between 1.6 and 1.7 kg/s. Reported nitrogen dioxide (NO2) concentrations downwind of the source are adjusted for the source mass evolution rate, and these observed conditions are compared with predicted concentrations using the Ocean Breeze/Dry Gulch model, the Pasquill-Hanna Gaussian plume model, and DEGADIS. (Developed for the Coast Guard, DEGAIS describes the negative buoyancy-driven flows and reduced vertical mixing observed for releases of heavier-than-air gases in the atmosphere. Observed Gaussian equivalent concentration profiles (sigmay and sigmaz) are also compared to predicted values. For these tests, the DEGAIS predictions are consistent with the observed concentration and values sigma y and sigma z, while the Gaussian plume models are not consistent. Furthermore, the importance of negative buoyancy-driven flows and decreased vertical mixing rates for Eagle 3 and 6 is predicted by a characteristic release Richardson number.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Development of a Simple Second Order Closure Model for Atmospheric Dispersion of Heavy Gases by : Madhavan Ranganathan
Download or read book Development of a Simple Second Order Closure Model for Atmospheric Dispersion of Heavy Gases written by Madhavan Ranganathan and published by . This book was released on 1997 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Atmospheric Dispersion of Heavy Gases and Small Particles by : G. Ooms
Download or read book Atmospheric Dispersion of Heavy Gases and Small Particles written by G. Ooms and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book contains the papers that have been presented at the IUTAM-Symposium on Atmospheric Dispersion of Heavy Gases and Small Particles, which was held from August 29th to September 2nd 1983 in Scheveningen in The Netherlands. Attendees from many countries were present; 4 review lectures and about 25 research papers were presented. The realization of the symposium was made possible by the support of Delft University of Technology Koninklijke/Shell-Laboratory Amsterdam Prins Maurits Laboratory/Institute for Chemical and Technological Research Royal Netherlands Meteorological Institute. The symposium organization was carried out by the local organi zing committee consisting of F.G.J. Absil - Delft University of Technology G.W. Colenbrander - Koninklijke/Shell-Laboratory Amsterdam G. Ooms - Delft University of Technology G. Opschoor - Prins Maurits Laboratory/Institute for Chemical and Technological Research H. Tennekes - Royal Netherlands Meteorological Institute A.P. van Ulden - Royal Netherlands Meteorological Institute. The work of the organizing committee was supported in many re spects by the sientific committee, which consisted of H. Fiedler - Technische Hochschule Karlsruhe, Fed. Rep. of Germany F.N. Frenkiel - Naval Ship Research and Development Center, Bethesda, Maryland, U.S.A. J.C.R. Hunt - University of Cambridge, England J. Kondo - National Institute for Environmetal Studies, Japan J.L. Lumley - Cornell University, Ithaca, New York, U.S.A."
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Workbook of Atmospheric Dispersion Estimates by : D. Bruce Turner
Download or read book Workbook of Atmospheric Dispersion Estimates written by D. Bruce Turner and published by . This book was released on 1969 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Coast Guard Engineer's Digest by :
Download or read book The Coast Guard Engineer's Digest written by and published by . This book was released on 1988 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :CCPS (Center for Chemical Process Safety) Publisher :John Wiley & Sons ISBN 13 :0816907021 Total Pages :308 pages Book Rating :4.8/5 (169 download)
Book Synopsis Guidelines for Use of Vapor Cloud Dispersion Models by : CCPS (Center for Chemical Process Safety)
Download or read book Guidelines for Use of Vapor Cloud Dispersion Models written by CCPS (Center for Chemical Process Safety) and published by John Wiley & Sons. This book was released on 1996-12-15 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this essential reference updates and combines two earlier titles to capture the many technological advances for predicting the "footprint" of a vapor cloud release. Cited by EPA in its 1996 document, "Off-Site Consequence Analysis Guidance," the aim of the book is to encourage and facilitate the development and use of dispersion modeling as an everyday tool, providing practical understanding of basic physical and chemical principles, guidance in selecting release scenarios and the best available models, and information and examples on how to run some models and interpret outputs. Equally useful to beginners and experts, it compares 22 programs based on input from model developers, and presents 7 examples of typical accidental release scenarios. The book comes with a disk providing input and output data for scenarios.
