Bubble-Mediated Oxygen Transfer from Bubbles Entrained by Jets

Abstract

This paper measured bubble-mediated oxygen transfers by using fluorescence image measurement, and modeled the relationship between bubble size and oxygen transfer velocity. The measured gas transfer coefficients increase with bubble size and there is a significant deviation from the theoretical one. This result indicates an effect of turbulent diffusion. The constructed model has been applied to aerated flow under circular jet to validate our model. Modeling of bubble-mediated gas transfer is important to understand air-sea gas exchange in the surf zone.