Table 1 Flow conditions for cough in literature.

From: Droplet nuclei caustic formations in exhaled vortex rings

Author

u (m/s)

D (cm)

V (l)

Droplet nuclei d (\(\upmu\)m)

Verma et al.10

2–6

\(> 0.5\)

5–10

Bourouiba et al.51

2

0.25–1.6

10

Tang et al.53

2–25

2

1–3

Liu et al.9

20

2.26

1

5–100