Corpus ID: 218869771

Viral air load due to sedimenting and evaporating droplets produced by speaking

  title={Viral air load due to sedimenting and evaporating droplets produced by speaking},
  author={R. Netz},
  journal={arXiv: Soft Condensed Matter},
  • R. Netz
  • Published 2020
  • Physics
  • arXiv: Soft Condensed Matter
  • The effect of evaporation on droplet sedimentation times is crucial for estimating the risk of infection from virus-containing airborne droplets. For droplet radii in the range 100 nm < R < 60 {\mu}m, evaporation can be described in the stagnant-flow approximation and is diffusion limited. Analytical equations are presented for the droplet evaporation rate, the time-dependent droplet size and the sedimentation time, including the significant effect of evaporation cooling. Evaporation makes the… CONTINUE READING

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