Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study
AbstractModels are increasingly used to estimate and pre-emptively calculate the occupational exposure of airborne released particulate matter. Typical two-box models assume instant and fully mixed air volumes, which can potentially cause issues in cases with fast processes, slow air mixing, and/or large volumes. In this study, we present an aerosol dispersion model and validate it by comparing the modelled concentrations with concentrations measured during chamber experiments. We investigated whether a better estimation of concentrations was possible by using different geometrical layouts rather than a typical two-box layout. A one-box, two-box, and two three-box layouts were used. The one box model was found to underestimate the concentrations close to the source, while overestimating the concentrations in the far field. The two-box model layout performed well based on comparisons from the chamber study in systems with a steady source concentration for both slow and fast mixing. The three-box layout was found to better estimate the concentrations and the timing of the peaks for fluctuating concentrations than the one-box or two-box layouts under relatively slow mixing conditions. This finding suggests that industry-relevant scaled volumes should be tested in practice to gain more knowledge about when to use the two-box or the three-box layout schemes for multi-box models. View Full-Text
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Jensen, A.C.Ø.; Dal Maso, M.; Koivisto, A.J.; Belut, E.; Meyer-Plath, A.; Van Tongeren, M.; Sánchez Jiménez, A.; Tuinman, I.; Domat, M.; Toftum, J.; Koponen, I.K. Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study. Environments 2018, 5, 52.
Jensen ACØ, Dal Maso M, Koivisto AJ, Belut E, Meyer-Plath A, Van Tongeren M, Sánchez Jiménez A, Tuinman I, Domat M, Toftum J, Koponen IK. Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study. Environments. 2018; 5(5):52.Chicago/Turabian Style
Jensen, Alexander C.Ø.; Dal Maso, Miikka; Koivisto, Antti J.; Belut, Emmanuel; Meyer-Plath, Asmus; Van Tongeren, Martie; Sánchez Jiménez, Araceli; Tuinman, Ilse; Domat, Maida; Toftum, Jørn; Koponen, Ismo K. 2018. "Comparison of Geometrical Layouts for a Multi-Box Aerosol Model from a Single-Chamber Dispersion Study." Environments 5, no. 5: 52.
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