WebJun 29, 2024 · The bubble entrapment during the recoil phase of the droplet impact is a result of air cavity closure followed by the formation of a singularity jet, which causes the bubble to oscillate at its ... WebThe large bubble is formed when the impact crater closes up near the pool surface and is known to occur only for drops that are prolate at impact. Herein we use experiments and numerical simulations to show that a concentrated vortex ring, produced in the neck between the drop and the pool, controls the crater deformations and pinchoff.

Bubble entrainment, spray and splashing at hydraulic jumps

WebDec 26, 2012 · At impact of a liquid drop on a solid surface, an air bubble can be entrapped. Here, we show that two competing effects minimize the (relative) size of this … WebOct 9, 2024 · where ρ L is the liquid density, D the drop diameter, V its velocity, σ the surface tension and g is the acceleration due to gravity. With a low impact velocity (F r < 7), coalescing, floating and bouncing occur without bubble entrapment or jet. 5–7 5.M. Rein, “ The transitional regime between coalescing and splashing drops,” J. Fluid Mech. 306, … cdiscount antibes

Dynamics of jets produced by bursting bubbles

WebApr 26, 2006 · The impact of a drop on the plane surface of the same liquid is studied numerically. The accuracy of the calculation is substantiated by its good agreement with … WebBubble entrainment by the impact of drops on liquid surfaces 151 10 7 J 10 100 1000 10 000 Froude number FIQURE 4.The two boundaries of the bubble region shown in figure … WebJul 1, 2024 · A classification method is then proposed, using a KNN algorithm and shows great performances to classify the acoustic signals. Thus, the method can be used to study the bubble entrainment hydrodyanmics during drop impacts, only from the acoustic signals and thus without the help of a high-speed camera. cdiscount annual report