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Geometry showing the different inlets and outlets (δz = 3 cm opening) defined for the 3D computation domain. A subject is standing in the elevator’s cabin such that his mouth as a coughing source is positioned at x = 0 m, y = 0.41 m, z = 1.6 m. An air purifier (sanitizer) is attached to the wall at about 1.9 m above the ground of the elevator’s cabin. The air purifier has an air intake (outlet 4) and an air exhaust (inlet 4) for air circulation at ≈60 m3/h.
