Figure 4. Free oscillation with surface tension case (i.e., p∞(t) = 0, σ = 0.0728 N/m): Temporal evolution for (a) bubble wall velocity and (b) bubble radius

From

Preliminary Calculation of Bubble Dynamics in Cracking Sound Generation

Tetsuya Kanagawa, Hisao Taira

Biomedical Science and Engineering. 2015, 3(2), 30-34 doi:10.12691/bse-3-2-1