FIG. 1.

Computational domain of a subject (human dummy) inside an elevator’s cabin of a maximum capacity of five persons.³⁵ The subject is considered as a simple hexahedral cell geometry because the focus is on the main flow circulation inside the cabin away from the subject’s boundary. (a) 3D view showing the 2.2 m height of the cabin and an air purifier installed at z ≈ 1.9 m above the cabin’s ground (z = 0). (b) Top view illustrating the man’s position and the air purifier. (c) Front view. (d) Hexahedral 3D mesh (≈6 · 10⁵) cells with mesh refinement near the inlets/outlets and near the subject’s boundary.