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PREDICTED AND OBSERVED BEHAVIOR OF PLATELET AEROSOLS
Citation:
Johnson, D. AND T. Martonen. PREDICTED AND OBSERVED BEHAVIOR OF PLATELET AEROSOLS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-96/066, 1994.
Description:
A theory describing the aerodynamic behavior of triaxial particles was recently presented. he formulation of particle motion was developed by regressing numerically predicted aerodynamic diameters on particle axial dimensions used in numerical simulations, and provided an excellent fit (R2 = 0.94) to geometric parameters. erodynamic diameters of cylindrical fibers calculated form the equation were within 5.% of those calculated from tober's (1972) well known empirical equation, which was obtained for asbestos fibers settling in the sheared flow environment of the spiral duct aerosol centrifuge. n the present work, the centrifugal spectrometer was used to characterize microcrystal particles of non-circular cross-section (i.e., platelets). he experimental data are used to evaluate the theory for an extreme triaxial particle shape. redicted behavior is shown to be in good agreement with observed behavior. he theory, therefore, may have important applications to air cleaning equipment, aerosol classification instrumentation, inhalation toxicology and aerosol therapy.