By Alex De Visscher
A unmarried connection with all points of latest air dispersion modeling
The perform of air dispersion modeling has replaced dramatically lately, largely as a result of new EPA laws. present with the EPA's forty CFR half fifty one, this publication serves as a whole connection with either the technological know-how and modern perform of air dispersion modeling. in the course of the e-book, writer Alex De Visscher courses readers via complicated calculations, equation through equation, supporting them comprehend accurately how air dispersion versions paintings, together with such renowned types because the EPA's AERMOD and CALPUFF.
Air Dispersion Modeling starts off with a primer that allows readers to quick grab simple rules by means of constructing their very own air dispersion version. subsequent, the ebook bargains every little thing readers have to paintings with air dispersion types and correctly interpret their effects, together with:
- Full bankruptcy devoted to the meteorological foundation of air dispersion
- Examples during the ebook illustrating how concept interprets into practice
- Extensive discussions of Gaussian, Lagrangian, and Eulerian air dispersion modeling
- Detailed descriptions of the AERMOD and CALPUFF version formulations
This publication additionally comprises entry to an internet site with Microsoft® Excel and MATLAB® records that include examples of air dispersion version calculations. Readers can paintings with those examples to accomplish their very own calculations.
With its finished and up to date insurance, Air Dispersion Modeling is suggested for environmental engineers and meteorologists who have to practice and overview environmental effect exams. The book's many examples and step by step directions additionally make it perfect as a textbook for college kids within the fields of environmental engineering, meteorology, chemical engineering, and environmental sciences.Content:
Chapter 1 advent (pages 1–13):
Chapter 2 AN AIR DISPERSION MODELING PRIMER (pages 14–36):
Chapter three AIR pollution (pages 37–53):
Chapter four rules OF AIR caliber AND AIR caliber MODELING (pages 54–59):
Chapter five METEOROLOGY FOR AIR DISPERSION MODELERS (pages 60–140):
Chapter 6 GAUSSIAN DISPERSION MODELING (pages 141–200):
Chapter 7 PLUME–ATMOSPHERE INTERACTIONS (pages 201–295):
Chapter eight GAUSSIAN version techniques IN city OR commercial TERRAIN (pages 296–328):
Chapter nine STOCHASTIC MODELING methods (pages 329–362):
Chapter 10 COMPUTATIONAL FLUID DYNAMICS AND METEOROLOGICAL MODELING (pages 363–403):
Chapter eleven EULERIAN version ways (pages 404–473):
Chapter 12 sensible elements OF AIR DISPERSION MODELING (pages 474–479):
Chapter thirteen ISC3 AND SCREEN3 (pages 480–490):
Chapter 14 AERMOD AND AERMET (pages 491–513):
Chapter 15 CALPUFF AND CALMET (pages 514–541):
Chapter sixteen CMAQ (pages 542–555):
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Extra resources for Air Dispersion Modeling: Foundations and Applications
A User’s Guide for the CALMET Meteorological Model. Earth Tech, Concord, MA. H. N. (2006). Atmospheric Chemistry and Physics, 2nd ed. Wiley, Hoboken, NJ. S. (1977). Dependence of the wind profile power law on stability for various locations. J. Air Pollut. Control Assoc. 27, 863–866. B. (1970). Workbook of Atmospheric Dispersion Estimates. US EPA, Washington DC. B. H. (2007). Practical Guide to Atmospheric Dispersion Modeling. , Dallas, TX, and Air and Waste Management Association, Pittsburgh. 1 Introduction There is a nearly endless variety of pollutants in the atmosphere.
Calculate the density of air at standard ambient temperature and pressure (SATP) (25 °C, 100,000 Pa). The molar mass of air is 29 g mol–1. Use the ideal gas law. 9. A stack with a height of 50 m emits 20 g s–1 of NO2. Plume rise is negligible. 5 m s–1. Stability class is C. The terrain is rural. Make a plot of the downwind NO2 concentration at ground level at the centerline as a function of distance from the stack. Determine the maximum concentration and the distance where this maximum is observed.
On the other hand, eq. 7) shows that the plume rise decreases with increasing wind speed, which leads to a increase of the concentration with increasing wind speed. The overall result of these counteracting effects is that the concentration passes through a maximum at a certain wind speed. This wind speed is known as the critical wind speed. It can be determined by trial and error. To illustrate the principle of critical wind speed, ground-level concentrations were calculated at different wind speeds for a source with considerable plume rise (hs = 75 m, Q = 100 g s–1, rural, stability class D, Fb = 4 m4 s–3).