Coupling between velocity and interface perturbations in cylindrical Rayleigh

Coupling between velocity and interface perturbations in cylindrical Rayleigh–Taylor instability

Guo Hong-Yu^{1, 2}, Wang Li-Feng^{2, 3}, Ye Wen-Hua^{2, 3, †}, Wu Jun-Feng², Zhang Wei-Yan^{2, 3}

(color online) Temporal evolution of the perturbed interface positions for mode number (a) m = 4 and (b) m = 10 at normalized time Γ=3.8. The RTI growth is initiated by only the interface perturbation α = 0.004λ (solid lines) or only the velocity perturbation v = 0.004λ (dashed lines), for Atwood number A = 1.