Bursting Bubble in a Viscoplastic Medium

Abstract

When a rising bubble in a Newtonian liquid reaches the liquid-air interface, it can burst, leading to the formation of capillary waves and a jet on the surface. Here, we numerically study this phenomenon in a yield stress fluid. We show how viscoplasticity controls the fate of these capillary waves and their interaction at the bottom of the cavity. Unlike Newtonian liquids, the free surface converges to a non-flat final equilibrium shape once the driving stresses inside the pool fall below the yield stress. Details of the dynamics, including the flow's energy budgets, are discussed. The work culminates in a regime map with four main regimes with different characteristic behaviours.

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References in corpus (3)

• On the physics of fizzing: How bubble bursting controls droplets ejection
• Spreading of viscoplastic droplets
• Oscillations of small bubbles and medium yielding in elastoviscoplastic fluids

Cited by in corpus (11)

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• The role of viscosity on drop impact forces on non-wetting surfaces
• Viscoelastic Worthington jets & droplets produced by bursting bubbles
• Bursting bubble in an elasto-viscoplastic medium
• Extracting self-similarity from data
• Growth of a viscoplastic blister underneath an elastic sheet
• Taylor-Culick retractions and the influence of the surroundings
• Capillary and priming pressures control the penetration of yield-stress fluids through non-wetting 2D meshes