Abstract
This work re-examines and further develops an analytical solution for the deposition swath of heavy particles released in the atmosphere from an elevated source over uniform terrain, correcting the particle diffusivity for the crossing trajectory effect. The revised (approximate) analytical solution proves to be accurate within 20% over a wide range of micrometeorological conditions and particle size, despite its neglect of the turbulence component of the deposition flux. It compares very satisfactorily with experimental data and with the simulations of a Lagrangian stochastic model, provided the variable U(H)/w g ≤7 (ratio of the mean horizontal wind speed at source height to the particle settling velocity). In this domain of validity, simple formulae relating the statistics of the deposition swath to U(H)/w g are derived.
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References
Barad, M. L. (1958). ‘Project Prairie Grass, A Field Program in Diffusion’. Geophysi. Res. Papers 59, I–III
Brooke J.W., Hanratty T.J. (1994). ‘Free-Flight Mixing and Deposition of Aerosols’. Phys. Fluids. 6(10): 3404–3415
Csanady G.T. (1963). ‘Turbulent Diffusion of Heavy Particles in the Atmosphere’. J. Atmos. Sci. 20, 201–208
Deacon E.L. (1949). ‘Vertical Diffusion in the Lowest Layers of the Atmosphere’. Quart. J. Roy. Meteorol. Soc. 75, 89–103
Deardorff J.W. (1978). ‘Closure of Second- and Third-Moment Rate Equations for Diffusion in Homogeneous Turbulence’. Phys. Fluids 21, 525–530
Farmer, R. A. (1969). Liquid Droplets Trajectories in Two-Phase Flow, PhD thesis, Massachussets Institute of Technology
Forney L.J., Spielman L.A. (1974). ‘Deposition of Coarse Aerosols from Turbulent Flow’. J. Aerosol Sci. 5, 257–271
Friedlander S.K., Johnstone H.F. (1957). ‘Deposition of Suspended Particles from Turbulent Gas Streams’. Ind. Eng. Chem. 49, 1151–1156
Godson W.L. (1958). ‘The Diffusion of Particulate Matter from an Elevated Source’. Arch. F. Met. Geophys. und Biokl. A 10, 305–327
Hage K.D. (1961). ‘On the Dispersion of Large Particles from a 15-m Source in the Atmosphere’. J. Meteorol. 18, 534–539
Liu Y.H., Agarwal J.K. (1974). ‘Experimental Observation of Aerosol Deposition in Turbulent Flow’. J. Aerosol Sci. 5, 145–155
McCoy D.D., Hanratty T.J. (1977). ‘Rate of Deposition of Droplets in Annular Two-Phase Flow’. Int. J. Multiphase Flow 3, 319–331
Patankar, S. V. (1980). Numerical Heat Transfer and Fluid Flow, Hemisphere Publ
Raupach, M. R. (2002). ‘Diffusion of Heavy Particles in a Turbulent Flow’. Geophys. Monograph., Environmental Mechanics: Water, Mass and Energy Tranfer in the Biosphere 129, American Geophysical Union, Washington, pp. 301–316
Rounds W. (1955). ‘Solutions of the Two-Dimensional Diffusion Equations’. Trans. Amer. Geophys. Union 36, 395–405
Sawford B L. (1991). ‘Lagrangian Stochastic Simulations of the Turbulent Motion of Heavy Particles’. Boundary-Layer Meteorol. 54, 147–166
Schmel G.A. (1971). ‘Particle Diffusivities and Deposition Velocities over a Horizontal Smooth Surface’. J. Colloid. Interface Sci. 37, 891–906
Schwediman L.C., Postma A.K. (1961). ‘Turbulent Deposition in Sampling Lines’. USAEC Report No. HW-65309
Slinn W.G.N. (1982). ‘Predictions for Particle Deposition to Vegetative Canopies’. Atmos. Environ. 16, 1785–1794
Taylor G.I. (1921). ‘Diffusion by Continuous Movements’. Proc. London Math. Soc. Ser. 2. 20: 196–212
Walker E.R. (1965). ‘A Particulate Diffusion Experiment’. J. Appl. Meteorol. 4, 614–621
Wells A.C., Chamberlin A.C. (1967). ‘Transport of Small Particles to Vertical Surfaces’. Br. J. Appl. Phys. 18, 1793–1799
Wilson J.D. (2000). ‘Trajectory Models for Heavy Particles in Atmospheric Turbulence: Comparison with Observations’. J. Appl. Meteorol. 39, 1894–1912
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Bouvet, T., Wilson, J.D. An approximate analytical solution for the deposition of heavy particles released from an elevated line source. Boundary-Layer Meteorol 119, 1–18 (2006). https://doi.org/10.1007/s10546-005-9016-6
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DOI: https://doi.org/10.1007/s10546-005-9016-6