Time delays in coupled multibubble systems (L)

Damping constants of free oscillations of coupled gas bubbles change considerably when time delays due to the finite speed of sound in the surrounding liquid are taken into account. This effect is illustrated analytically by the example of a two-bubble system and numerically by the example of a bubble chain. By comparing the numerical data with experimental measurements, it is shown that allowing for time delays considerably improves agreement between theory and experiment.