Turbulent Bubbly Channel Flow: Role of Bubble Deformability

This article describes the fluid dynamics video: “Turbulent Bubbly Channel Flow: Role of Bubble Deformability.” The effect of bubble deformability on the flow rate of bubbly upflow in a turbulent vertical channel is examined using direct numerical simulations. A series of simulations with bubbles of decreasing deformability shows a transition from flow where deformable bubbles remain in the middle of the channel to a situation where nearly spherical bubbles slide along the walls.