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Hazardous airborne particulates exist in many industrial and military situations where personnel wear permeable clothing. The amount of protection that an individual receives from their clothing has been modeled using fluid dynamic and aerosol transport processes. This model evaluates the protective capacity of clothing systems from clothing material characteristics measurable in bench-top, laboratory-scale experiments. With appropriate representations of clothing geometry, hydrodynamic pressure distributions, aerosol penetration efficiencies and aerosol deposition velocities, aerosol deposition within the garment system and on the body beneath the garment system are calculated. By comparing the anticipated deposition levels with toxic effects doses, the effectiveness of permeable protective systems can be estimated. This model illustrates the processes of protective system performance and can provide a system assessment based on bench-scale experimental measurements.
aerosol protection, permeable clothing, deposition, filtration, penetration, modeling
Research Physicist, U.S. Army Chemical Research Development and Engineering Center, Attn: SMCCR-RSP-P, Aberdeen Proving Ground, MD