Review on bubble dynamic of subcooled flow boiling-part a: Research methodologies

Abstract

Bubble dynamics is a crucial means to study the heat transfer characteristics of subcooled flow boiling. However, the small size, complex behavior, as well as difficult-to-measure parameters greatly affect the development of bubble dynamics. So far, numerous studies have focused on bubble behavior and more advanced research methods. Therefore, the purpose of this review is to discuss bubble dynamics involved in subcooled flow boiling and summarize research methodologies in this field. In this respect, this review discussed the bubble dynamic mechanism model including the energy balance model and the force balance model, where their sub-models have also been introduced. In addition, bubble dynamic experiments were discussed from the perspective of circuit and equipment, parameter measurement, as well as the post-processing method. Finally, bubble dynamic numerical methods are introduced from three aspects, namely, microscale bubble nucleation, mesoscale bubble behavior, and macroscale bubble behavior. This article's content contributes to a deep understanding of bubble dynamics, and the application of advanced research methods promotes the development of subcooled flow boiling.