title: Discrete vortex methods for the simulation of boundary layer separation effects on worker exposure.
abstract: The discrete vortex method is a numerical technique for the solution of the two-dimensional Navier-Stokes equations in vorticity-transport form. The technique is employed here, with appropriate modifications, to simulate boundary layer separation around a worker and to assess the implications for exposure. Approximations include: (1) representation of the worker as a two-dimensional elliptical cylinder; and (2) contaminant transport by vortex shedding exclusively. The model results in estimates of breathing zone concentration that are in reasonable agreement with laboratory wind tunnel experiments.
authors.affiliation: Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill 27599-7400.
authors.forename: M R
authors.initials: MR
authors.lastname: Flynn
authors.forename: C T
authors.initials: CT
authors.lastname: Miller
mesh_terms: D000392:Air Movements; D000393:Air Pollutants; D003198:Computer Simulation; D004781:Environmental Exposure; D008962:Models, Theoretical
chemical_list: D000393:Air Pollutants