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Abstract
Laboratory measurements of exposure using a mannequin and a point source of tracer gas suggest that locating a contaminant source within a separated boundary layer results in greater exposure variability than when the source is outside such a region. An increase in the variance of from one to two orders of magnitude was observed when the source was positioned downstream of the mannequin. The results provide information for estimating the relative exposure variability between processes under different aerodynamic conditions.
