Lift and drag coefficients of deformable bubbles in intense turbulence determined from bubble rise velocity

Towards a phenomenological model on the deformation and orientation dynamics of finite-sized bubbles in both quiescent and turbulent media

“…However, in turbulence, the lift and drag coefficients are closer to the reported values for contaminated ones (Salibindla et al. 2020). Nevertheless, the interface contamination will not affect the model prediction as the slip velocity between the two phases enters into our model as an input.…”

The effect of nonlinear drag on the rise velocity of bubbles in turbulence

“…2002; Salibindla et al. 2020). Finally, we model the drag exerted on the particle with where is the frontal area of a sphere with volume and is the drag coefficient, which is dependent on the condition at the particle surface and the Reynolds number , where is the carrier fluid viscosity, of the flow around the particle.…”

Simultaneous measurements of deforming Hinze-scale bubbles with surrounding turbulence

“…In a recent paper (Salibindla et al. 2020), the drag coefficient of bubble with different sizes in intense turbulence was reported, and it follows where . Based on this equation, the most probable slip velocity in the vertical direction can be calculated following , where is the volume of a bubble.…”

“…In intense turbulence, these parameters could also be functions of . In a recent paper (Salibindla et al 2020), the drag coefficient of bubble with different sizes in intense turbulence was reported, and it follows C D = max(24/Re b (1 + 0.15Re 0.687 b ), min( f (Eo), f (Eo)/We 1/3 )) where f (Eo) = 8Eo/3(Eo + 4). Based on this equation, the most probable slip velocity in the vertical direction can be calculated following u 2 slip,z = 2V b (ρ − ρ b )g/ρAC D , where V b is the volume of a bubble.…”