Experimental and numerical study on the growth and collapse of a bubble in a narrow tube

Numerical investigation of the effect of viscosity on bubble dynamics in a narrow channel

“…In addition, the expression of equations in the discretization form for viscosity parameters on the bubble surface is another aspect of distinguishing the present work from the other researches. The numerical results obtained for the growth and collapse of bubble inside the water in the rigid tube are validated with the experimental one published by Ni et al [14]. To the best of our knowledge, there is a lack of experimental results in literature for bubble dynamics in viscous fluids inside the narrow tube.…”

“…To our knowledge, the bubble dynamic behavior by BEM (Boundary Element Method) near the boundary with the axial symmetry like a narrow channel compared with the rigid boundary or free boundary has rarely been studied in the literature [13][14][15][16][17][18]. In most of the studies related to bubble dynamics inside the narrow channel based on BEM, viscosity effects are ignored.…”

Simulation of bubble dynamics near a plate with an aperture in a vertical cylinder using a combined boundary element-finite difference method

“…When a bubble is placed in a narrow tube, the bubble assumes an ellipsoid shape during expansion, while a counter-jet forms when the bubble contracts [25]. The counter-jet further develops to penetrate the bubble and generates a ring type bubble.…”

Interactions between two oscillating bubbles in a rigid tube

“…They depicted that the bubble elongated in the axial direction during the growth phase, and two broad liquid jets directed inward were developed during the collapse. Ni [13] studied the collapse behavior of a bubble in rigid narrow tube by means of both experiment and simulation. Their simulation went on after the jets contacted, which showed that a toroidal bubble formed at the end of the collapse, afterwards a ring-shaped jet was generated pointing towards the tube wall.…”