Comparative analysis of aerosol transport characteristics between high and low gas-liquid surface tension coefficients conditions

• The physical meaning of particle Weber number is reinterpreted in simulation. • The influence of bubble dynamics on aerosol decontamination is analyzed. • The aerosol global distribution and removal distribution are investigated. • The dynamics process of aerosol removal inside rising bubbles is indicated. Aerosol particle interfacial behavior is a pivotal factor to affect the decontamination factor under pool scrubbing conditions, where few attentions has been devoted to this crucial physical phenomenon. In this work, the case of single bubble rising with internal aerosol transport is investigated by the VOF-LPT method. Given that the present interfacial process belongs to the capillary-dominant regime, an interfacial penetration model is employed to include the influence of particle interfacial behavior. Under the circumstance of two typical internal flow fields, aerosol global distribution and removal distribution with various sized particles are examined thoroughly and systematically. The results revealed that in terms of aerosol global distribution, the displacement distribution is mainly subject to bubble shape, while the velocity distribution is largely dependent on internal flow field. As for aerosol removal distribution, the dependency of aerosol deposition velocity on aerosol size is subject to the compromise between internal flow intensity and particle inertia. The weakened flow field is found to slow down aerosol internal circulation, which decontaminates aerosol laterally by the continuously fluctuating interface.