By Alex De Visscher
A unmarried connection with all points of latest air dispersion modeling
The perform of air dispersion modeling has replaced dramatically in recent times, largely because of new EPA laws. present with the EPA's forty CFR half fifty one, this ebook serves as an entire connection with either the technological know-how and modern perform of air dispersion modeling. during the ebook, writer Alex De Visscher courses readers via complicated calculations, equation by means of equation, assisting them comprehend accurately how air dispersion types paintings, together with such well known types because the EPA's AERMOD and CALPUFF.
Air Dispersion Modeling starts with a primer that allows readers to quick take hold of uncomplicated ideas by way of constructing their very own air dispersion version. subsequent, the booklet deals every little thing readers have to paintings with air dispersion versions and competently interpret their effects, together with:
- Full bankruptcy devoted to the meteorological foundation of air dispersion
- Examples through the booklet illustrating how idea interprets into practice
- Extensive discussions of Gaussian, Lagrangian, and Eulerian air dispersion modeling
- Detailed descriptions of the AERMOD and CALPUFF version formulations
This booklet additionally contains entry to an internet site with Microsoft® Excel and MATLAB® documents that comprise examples of air dispersion version calculations. Readers can paintings with those examples to accomplish their very own calculations.
With its entire and up to date assurance, Air Dispersion Modeling is usually recommended 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 excellent 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 law 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 methods IN city OR commercial TERRAIN (pages 296–328):
Chapter nine STOCHASTIC MODELING techniques (pages 329–362):
Chapter 10 COMPUTATIONAL FLUID DYNAMICS AND METEOROLOGICAL MODELING (pages 363–403):
Chapter eleven EULERIAN version methods (pages 404–473):
Chapter 12 sensible points 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 info for Air Dispersion Modeling: Foundations and Applications
3 μg m–3 represents a worst case. Under the given meteorological conditions the highest concentration is found at about 1900 m from the source, and amounts to about 170 μg m–3. If other meteorological conditions can be discarded, then the worst case is more than a factor of 2 below the standard, and more sophisticated calculations are not required. But very likely more unstable conditions and lower wind speeds will lead to higher concentrations, which would prompt more sophisticated calculations.
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. , a lateral, or crosswind concentration profile). 10. As a result of odor complaints, a “nasal ranger” is sent to the site of the odor for an investigation. The nasal ranger reports a distinct H2S smell downwind of a gas plant, up to about 5 km downwind of the plant.
Based on eq. 4, how does the wind speed profile compare with the velocity profile of a fluid in a pipe? 7. Show that the units of Fb are m4 s–3. 8. 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.