Top: incident particle flux at a distance from the module, normalized with the flux injected from one vent, n/n_v, with ﹩{\dot{n}}_{v}=\dot{m}/({m}_{{\rm{mix}}}\pi {R}_{v}^{2})﹩. Bottom: same values extracted along the X and Y lines shown in the top panel (lateral to the module and parallel to the ground). Left boxes: front-facing vents. Right boxes: top-facing vents.