Three-Dimensional Image Measurement of Bubble-Bubble Interaction

Numerical Investigation of the Effect of Bubble-Bubble Interaction on the Power of Propagated Pressure Waves

The study of bubble dynamics, especially the interaction of bubbles, has drawn considerable attention due to its various applications in engineering and science. Meanwhile, the study of the oscillation effect of a bubble on the emitted pressure wave of another bubble in an acoustic field which has less been investigated. This issue is investigated in the present study using the coupling of Kell...

Regular three-dimensional bubble clusters: shape, packing and growth-rate

We consider three-dimensional clusters of equal-volume bubbles packed around a central bubble and calculate their energy and optimal shape. We obtain the surface area and bubble pressures to improve on existing growth laws for three-dimensional bubble clusters. We discuss the possible number of bubbles that can be packed around a central one: the “kissing problem”, here adapted to deformable ob...

Three-dimensional bubble clusters: shape, packing, and growth rate.

We consider three-dimensional clusters of equal-volume bubbles packed around a central bubble and calculate their energy and optimal shape. We obtain the surface area and bubble pressures to improve on existing growth laws for three-dimensional bubble clusters. We discuss the possible number of bubbles that can be packed around a central one: the "kissing problem," here adapted to deformable ob...

Bubble Recognition from Image Sequences

In this paper, we present an algorithm which can automatically recognize vapor bubbles in a seething liquid from an image sequence. The image sequences were taken with a high-speed video camera with one thousand images pro-second. Our algorithm was divided into two steps: the background image identification and the bubble recognition. In the first step, the technique for auto-focus was applied ...

Two-dimensional bubble clustering in hydraulic jumps