Fig 1.
The horizontal configuration and location of generators in the experiment.
(1) atomizers, (2) box walls, (3) laser, (4) mirror, (5) laser beam, and (6) photodetectors. (A) L-shaped configuration, atomization at one spot. (B) L-shaped configuration, atomization at two spots.
Fig 2.
Schematics of experimental configurations imitating a staircase.
(A) generators on the bottom and (B) generators on the top. (1) atomizers, (2) box walls, (3) laser, (4) laser beam, and (5) photodetectors.
Fig 3.
Distance passed by a water droplet of 15 μm in diameter when it gets retarded in the air. Initial velocity u = 300 m/s.
Experimental dots were obtained by high-speed video recording; the curve stands for calculation.
Fig 4.
Distance of retardation of a water droplet with different diameters plotted against initial velocity.
Fig 5.
A time course of aerosol particle concentration for the test box of horizontal configuration (Fig 1).
(A) L-shaped configuration, atomization at one spot; (B) L-shaped configuration, atomization at two spots.
Fig 6.
A time course of aerosol particle concentration.
(A) the experiment in the test box of vertical configuration (Fig 2) and (B) calculation for distances of 0.2, 1, and 1.5 m from the source, independent of configuration.
Fig 7.
Diffusive propagation rate and gravitational sedimentation rate plotted against particle diameter at different distances from the source.
Fig 8.
Maximum aerosol particle diameter plotted against the distance from the source.