Evaluation of the force balance at gas/liquid interface of a tiny bubble under pressure-oscillating field

Abstract

Under pressure-oscillating field, a tiny air bubble which expands/contracts alternately shows various kinds of shape in viscoelastic fluid depending on the degree of pressure-oscillation. In this study, we evaluated effects of viscoelasticity and local flow on the tiny bubble shape under large pressure-oscillating field in the viscoelastic fluid such as CMC liquids. In the case of forming a unique shape, it is found that the elastic dominates at gas/liquid interface of a tiny bubble.