Fig. 6: Schematics of bubble bursting at an air–oil–water interface and scaling laws of jet tip radius and velocity.
From: Compound jetting from bubble bursting at an air-oil-water interface
a Cap rupture, b cavity collapse, and c jet formation of bubble bursting at an oil-covered aqueous surface. The oil spreading along the cavity surface has a flow rate of Q from the oil layer around the cavity with an initial thickness of hi. d Zoom-in view of the red square zone in (b), showing a capillary wave of wavelength λ at a water surface covered with an oil film of thickness he. Dimensionless (e) radius rj/R and (f) velocity vj/vc of the jet tip as a function of the revised Ohnesorge number Ohe. In (e) and (f), the solid lines represent the scaling laws of Eqs. (12) and (13), and the dashed lines represent the scaling laws of Eqs. (20) and (21), respectively. Error bars are calculated as the standard deviations of data of at least 10 runs.
