LEADER 01065cam0-2200361---450- 001 990008265490403321 005 20070222133717.0 010 $a88-438-0491-X 035 $a000826549 035 $aFED01000826549 035 $a(Aleph)000826549FED01 035 $a000826549 100 $a20060201d2004----km-y0itay50------ba 101 1 $aita$cfre 102 $aIT 105 $a--------001yy 200 1 $aDalla parte dei deboli$fJean Ziegler$gcon la collaborazione di Sally-Anne Way e Christophe Golay$gtraduzione di Monica Fiorini 210 $aMilano$cM. Tropea$d2004 215 $a156 p.$d22 cm 225 1 $a<>querce 610 0 $aAlimentazione$aPaesi in via di sviluppo 676 $a363.809 172 4 701 1$aZiegler,$bJean$f<1934- >$0298981 702 1$aWay,$bSally Anne 702 1$aGolay,$bChristophe 702 1$aFiorini,$bMonica 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990008265490403321 952 $aSE119.02.06-$fDECSE 959 $aDECSE 996 $aDalla parte dei deboli$9742492 997 $aUNINA LEADER 05575nam 2200673 a 450 001 9910877014603321 005 20200520144314.0 010 $a1-282-78341-6 010 $a9786612783418 010 $a0-470-93561-8 010 $a0-470-93560-X 010 $a1-59124-575-3 035 $a(CKB)111086367653204 035 $a(EBL)588978 035 $a(SSID)ssj0000073214 035 $a(PQKBManifestationID)11107637 035 $a(PQKBTitleCode)TC0000073214 035 $a(PQKBWorkID)10103857 035 $a(PQKB)10078240 035 $a(MiAaPQ)EBC588978 035 $a(OCoLC)676875069 035 $a(EXLCZ)99111086367653204 100 $a20020322d2002 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aWind flow and vapor cloud dispersion at industrial and urban sites /$fSteven R. Hanna, Rex E. Britter 210 $aNew York $cCenter for Chemical Process Safety of the American Institute of Chemical Engineers$dc2002 215 $a1 online resource (228 p.) 225 1 $aCCPS concept book 300 $aDescription based upon print version of record. 311 $a0-8169-0863-X 320 $aIncludes bibliographical references and index. 327 $aWind Flow and Vapor Cloud Dispersion at Industrial and Urban Sites; Contents; Preface; Acknowledgments; List of Symbols; 1 Introduction; 1.1. Background; 1.2. Objectives of This Book; 1.3. Overview; 1.4. Definition of Scenarios and Modeling Scales; 2 Overview of Meteorology and Atmospheric Dispersion; 2.1. Definitions of Concepts and Terms; 2.2. Engineering Background; 2.3. Survey of Currently Available Methods for Classifying Dispersion Coefficients for a Variety of Surface Types; 2.3.1. Introduction to Discussion of Efects of Surface Features 327 $a2.3.2. Use of a Simple Gaussian Dispersion Model to Undetstand the Efects of Roughness2.3.3. Situations Where Winds, Stability and Underlying Terrain Vary in Time and/or Space; 2.3.4. Methods for Accounting for Surface Roughness Length and Displacement Length in Dispersion Models; 2.4. Survey of Experiments Showing Effects of Surface Roughness Obstacles on Dispersion; 2.4.1. Dispersion of Clouds with Mass- Weighted Mean Heights Greater Than the Roughness Obstacle Height, Hr; 2.4.2. Dispersion of Clouds with Mass- Weighted Mean Heights Less Than the Roughness Obstacle Heights, Hr 327 $a3 Methods for Characterizing the Effects of Surface Roughness Obstacles on Flow3.1. Required Flow Characteristics for Input to Transport and Dispersion Models; 3.2. Consideration of Flow Above and Below the Tops of the Obstacles; 3.3. Flow above the Surface Roughness Obstacles; 3.3.1. Definition of Surface Roughness Length, zo, and Displacement Length, d, as They Relate to Flow Characteristics Such as Wind Speed; 3.3.2. Methods for Estimating zo, and d from Wind Observations; 3.3.3. Size of Surface Area that Influences Flow at a Given Height 327 $a3.3.4. Estimation of zo and d Based on Knowledge of Surface Roughness Obstacles' Dimensions and Geometric Relations (the Morphological Method)3.3.5. Overview of Land Use Category Methods for Estimating zo and d; 3.3.6. Estimation of zo for Surface Conditions Varying in Space; 3.4. Flow Through an Obstacle Array; 3.4.1. Extent of the Roughness Sublayer; 3.4.2. Wind Velocity Fields within and Near Obstacle Arrays; 3.4.3. Model Comparison with Experimental Data; 3.4.4. The Turbulence Field within the Obstacle Array; 3.4.5. Extensions to Other Effects within the Obstacle Array 327 $a3.4.6. Summary of Recommendations for Wind Speed and Turbulence within Obstacle Arrays3.5. Summary of Recommended Methods for Estimating zo, d, and Flow Characteristics Such as Wind Profiles. Friction Velocity (u*), and Turbulence Velocities in Urban and Industrial Areas; 3.5.1. Definition of Region of Interest (from Source to Receptor); 3.5.2. Determination of zo and d; 3.5.3. General Simple Formulas for u*, u(z), and Turbulent Velocities; 3.5.4. Selection of an Appropriate Mean Wind Speed and Stability 327 $a3.5.5. Estimates of Urban and Industrial Geometric Parameters Hr, ?f, and ?p Using the ROUGH Code 330 $aA key component of risk reduction is reducing the potential consequences that could result from toxic or flammable releases. The science of vapor cloud dispersion has advanced significantly in recent years, but one of the long-standing challenges has been in accounting for dispersion around buildings, equipment, and similarly sized geologic and man-made features. With current concerns about terrorism in industrial and urban sites, improving consequence modeling within industrial and urban sites is more important than ever This new definitive book advances the science of vapor cloud dispersion 410 0$aCCPS concept book. 606 $aAtmospheric diffusion$xMathematical models 606 $aHazardous substances$xEnvironmental aspects$xMathematical models 606 $aVapors$xMathematical models 615 0$aAtmospheric diffusion$xMathematical models. 615 0$aHazardous substances$xEnvironmental aspects$xMathematical models. 615 0$aVapors$xMathematical models. 676 $a628.5/3/015118 700 $aHanna$b Steven R$021419 701 $aBritter$b R. E.$f1946-$0946289 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910877014603321 996 $aWind flow and vapor cloud dispersion at industrial and urban sites$92137933 997 $aUNINA