Table 1.

Comparison and development of the droplet evaporation models.

Country	Object	Factors	Model	Investigator
Israel	Pure water	Heat and mass transfer	Multi-shells droplet	Pariente et al. [46]
China	Pure water	Air turbulence	Single droplet	Wei et al. [21]
China	Pure water	Air thermal stratification	Single droplet	Liu et al. [47]
Australia	Pure water	Heat and mass transfer	Single droplet	Morawska et al. [48]
China	NaCl	Breathe speed	Single droplet	Xie et al. [44]
China	NaCl	Air turbulence	Single droplet	Liu et al. [35]
Australia	NaCl	Non-uniform humidity field	Mathematical model of droplet evaporation in cough	Li et al. [22]
USA	NaCl, carbohydrates, lipids, and proteins	Chemical composition	An improved multi-component droplet	Redrow et al. [23]