Modeling three dimensional gas bubble dynamics between two curved rigid plates using boundary integral method

This paper presents a computational study of three-dimensional gas bubble dynamics between two curved rigid plates using the boundary integral method (BIM).

The research examines how bubbles behave when placed at different locations between the curved plates, with a focus on bubble shape evolution, jet formation, and fluid dynamics.

The key findings reveal that when a bubble collapses near a solid boundary, it forms high-speed liquid jets that can cause erosion in turbomachinery but can also be beneficial in applications like surface cleaning and fluid pumping. The researchers found that jet velocity increases as the bubble is horizontally shifted away from the centerline, and the number of jets reduces from two to one with this shift. Jet direction is horizontal when the bubble forms on the horizontal axisymmetric line, but changes direction as the bubble is positioned closer to one of the plates.

The study implements a modified Laplacian smoothing technique to reduce element distortion during jet development, improving computational stability. The research has potential applications in biomedical fields like targeted drug delivery in blood vessels, particularly in areas with atherosclerosis. The paper includes detailed analysis of pressure and velocity fields surrounding the bubble to provide deeper insight into the physical mechanisms involved.