Figure 3
From: Coalescence of two growing bubbles in a Hele–Shaw cell
(a) Image sequence of bubble coalescence for \(D=0.3 \ \mathrm{mm}\), \(\eta =1 \ \mathrm{Pa \cdot s}\), and \(dp/dt=-1.5 \ \mathrm{kPa/s}\) (2021053104). The film thickness is shown by an arrow. An image taken at \(t=60.961 \ \mathrm{s}\) is the bubble shape just before coalescence (\(t=t_c\)). (b) Images just before coalescence. All runs have \(\eta =1 \ \mathrm{Pa \cdot s}\) and \(D=0.3 \ \mathrm{mm}\), but have different decompression rates. (c) The evolution of film thickness with the average radius of two bubbles (\({\bar{R}}(t)\)). The experiment runs are the same as those shown in (a) and (b).
