Figure 4.

Comparisons of the bubble radius time history for a coated and uncoated bubble as determined from the three-dimensional BIM model and modified RP equation. The parameters used for the case are c = 1500 m s⁻¹, α = 1.4, σ = 0.055 N m⁻¹, ɛ = 1 + 2σ*, p₀ = 100 kPa, ρ = 1000 kg m⁻³, R₀ = 4.5 µm, p_a* = 1.2, ω = 942 MHz, G_s = 10.0 MPa, d_s = 15 nm, μ_s = 0 and μ_l = 3.5 Pa s. (Online version in colour.)