Experimental studies of the aspiration efficiencies of blunt aerosol samplers at large angles to the wind.
Sreenath-A; Ramachandran-G; Vincent-JH
J Aerosol Sci 1996 Sep; 27(Suppl 1):S677-S678
Practical aerosol sampling in workplaces and the atmospheric environment involves the use of devices of complex shape with entry orifices whose orientation with respect to the wind can range over the full 360 degrees. For such systems, simple models of aspiration efficiency like those developed for thin-walled samplers are inadequate for describing sampling performance. Models based on considerations of the flow about bluff bodies with aspiration have enabled progress to be made, both in semi-empirical modelling and in numerical simulations (as reviewed by Vincent, 1989 and 1995). However, further progress requires new experimental data by reference to which improved models can be developed.
Aerosols; Aerosol-particles; Aerosol-sampling; Environmental-factors; Sampling; Sampling-methods; Air-flow; Models; Exposure-assessment
Division of Environmental and Occupational Health, School of Public Health, University of Minnesota, Box 807 Mayo, 420 Delaware Street S.E. Minneapolis, MN 55455 U.S.A.
Journal of Aerosol Science
University of Minnesota, Minneapolis, Minnesota