CFD simulation of aerosol deposition in Apsley House, London

TL;DRAbstract

We implemented an Eulerian model of aerosol dispersion
\nand deposition in a commercial CFD code (Ansys
\nFluent). We used this model to simulate the penetration,
\ndispersion and deposition of particulate matter of outdoor
\norigin (larger than 1 µm) in a naturally ventilated
\nhistorical building (Apsley House, London). The ingress
\nof particles through cracks in the building envelope is
\nestimated using a penetration factor model implemented
\ninto the CFD code. We investigate the effects of wind
\ninduced leakage, forced and natural ventilation. Our approach
\nsuccessfully predicts the spatial variation of deposition,
\nand offers reasonable estimations of maximum
\nand minimum yearly average deposition rates. Considering
\nonly ventilation, the deposition velocity vd =
\n2.6×10−4±8.6×10−5
\ns
\n−1
\n, considering only leakage, vd
\n= 6.6×10−5±4.18×10−5
\ns
\n−1
\n. Both values are within
\nth

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