On the spreading of impacting drops

Author: qvls

August undefined, 2024

WebDroplet impact has been imaged on different rigid, smooth, and rough substrates for three liquids with different viscosity and surface tension, with special attention to the lower … WebOn a wetting surface, "receding breakup" can occur as the liquid retracts from its maximum spreading radius, due to the fact that the contact angle decreases during retraction, causing some drops to be left behind by the receding drop. On superhydrophobic surfaces, the retracting drop can break up into a number of fingers which are each capable of further …

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Web30 de abr. de 2024 · Therefore, the results in figure 20(a) contrast with those in Range & Feuillebois (Reference Range and Feuillebois 1998) for the case of drops impacting … Web1 de out. de 2024 · 17 examine the ti me-dependen t spreading dy namics of a drop on to a curved hydr ophobic surf ace. We also obse rved that a drop on a cu rved sur- 18 face … daily-tribune.com

Maximum spreading of a shear-thinning liquid drop impacting on …

Web11 de fev. de 2016 · On the spreading of impacting drops. The energy budget and dissipation mechanisms during droplet impact on solid surfaces are studied numerically … Webthe impacting droplet D as a function of the We number. Different drop diameters are presented: for drop α, ∗ for drop β,and for drop γ, all three impacting sand B; are related to drops β on ... Web12 de abr. de 2024 · Resolution independence study of drop impact at the maximal spreading with We ¼ 17.2, Re ¼ 658, and h ¼ 54 . (a) Mesh independence study and (b) time step independence study. daily-test

On the maximum spreading diameter of impacting droplets on …

The Effect of Surface Roughness on the Contact Line and …

Web15 de jun. de 2024 · The spreading ratio β = D s / D is defined in Fig. 3 (a) with a typical time evolution presented in Fig. 3 (b). After the drop contacts the solid surface, β first … Web1 de abr. de 2024 · The experimental data of impacting drops of different fuels on a smooth stainless steel surface reveal a sluggish spreading, referred to as post … dailymotion coronation street march 13 2023Web12 de abr. de 2024 · Resolution independence study of drop impact at the maximal spreading with We ¼ 17.2, Re ¼ 658, and h ¼ 54 . (a) Mesh independence study and … dailymotion celebrity juice

"WebThe impact of liquid drops on a rigid surface is central in cleaning, cooling, and coating processes in both nature and industrial applications. However, it is not clear how details of pores, roughness, and texture on the solid surface influence the initial stages of the impact dynamics. Here, we experimentally study drops impacting at low velocities onto … " - On the spreading of impacting drops

On the spreading of impacting drops

On the maximal spreading of drops impacting onto a no-slip …

Web11 de abr. de 2024 · Moreover, the maximum spreading diameter of the water drop was proportional to the first power of the water drop diameter and the quarter power of the Weber number. ... Maximum spreading of liquid drops impacting on groove-textured surfaces: Effect of surface texture. Langmuir, 32 (2016), pp. 2399-2409. Web14 de abr. de 2024 · Recently, using an impacting droplet has presented great potential in promoting the shedding of a sessile droplet on superhydrophobic surfaces. 13,14 13. F. …

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Web10 de nov. de 2024 · First, it is interesting to see that the numerical results for an impacting pure drop agree well with the universal rescaling of maximal spreading ratio proposed by Lee et al. ( J. Fluid Mech ... Web4 de abr. de 2024 · In this particular research, droplet impact onto a smooth sapphire surface is studied for seven glycerol concentrations between 0% and 100%, and 294 …

Web15 de mai. de 2024 · t = 0 is defined as the moment when the droplets reach maximum spreading. (b) Dynamic contact angle measurements of a water droplet impacting (v … Web8 de abr. de 2024 · Despite extensive studies on kinematic features of impacting drops, the effect of mechanical stress on desiccated bacteria-laden droplets remains unexplored. In the present study, we unveiled the consequences of the impaction of bacteria-laden droplets on solid surfaces and their subsequent desiccation on the virulence of an …

Web10 de jan. de 2024 · The maximum spreading of drops impacting on smooth and rough surfaces is measured from low to high impact velocity for liquids with different surface tensions and viscosities. Web1 de jan. de 2024 · Visualization of viscous dissipation inside an impacting droplet (We = 300, Re = 500, θ = 180 • ). No-slip on the left, and free-slip on the right.

Web5 de jan. de 2024 · In contrast to water droplets, the colloid droplets exhibit vigorous spraying behavior due to the nanoparticulate residue deposition during the spreading and retraction stages. Further, the residue on the heated substrate changes the departure diameter of the vapor bubbles during boiling, prevents bubble coalescence and vapor …

Web23 de ago. de 2024 · Interaction between an impinging liquid drop with low momentum and a heated wall is investigated experimentally, using a high-speed digital camera with capacity of 10 $$^{6}$$ 6 frames per second. Wall temperature ranges in 47–108 $${}^{\\circ }$$ ∘ C, and Weber number varies from 4 to 67. Water is selected as the fluid due to its relatively … dailymotion apprentice uk season 3Web1 de abr. de 2012 · In the present study, the maximum spreading of Newtonian and shear-thinning drops impacting on dry surfaces was investigated experimentally. Water, glycerin drops (Newtonian liquids) and xanthan drops (shear-thinning liquids) were impinged upon the flat surfaces of glass, stainless steel and parafilm-M substrates, which have … dailymotion ebeafootballWeb3 de out. de 2005 · The spreading of water drops impinging on structured rough surfaces is studied experimentally. The rough surfaces are specially prepared with a regular pattern of surface asperities. The arrangement of the square-shaped surface asperities creates channel-like grooves on the surface. A video microscope along with a controlled light … dailymotion columboWeb15 de mai. de 2024 · The spreading of liquid droplets impacting a surface at high speed is well understood by now. However, when a droplet impacts a surface at relatively low impact velocities (< 1 m/s), the wetting properties of the fluid become important, and the entrapped air layer between the impacting drop and the solid surface prevents the immediate … dailymotion boy meets worldWeb1 de abr. de 2024 · Hydrocarbon fuel drops impacting on metallic solid surfaces kept at room temperature exhibit no receding after the completion of early inertia-driven primary spreading. The experimental data of impacting drops of different fuels on a smooth stainless steel surface reveal a sluggish spreading, referred to as post-spreading, after … dailymotion dark side of the ring s3e3WebLiquid drops impacting onto a solid surface present very important and fascinating phenomena, which are also of great importance in many practical processes, such as … dailymotion dance moms season 1WebThis new view on the impact problem allows for simple analytical estimates of the maximum spreading diameter of impacting drops as a function of the impact parameters and the properties of the solid surface. It bridges the gap between previous momentum balance approaches and energy balance approaches, which hitherto did not give consistent ... dailymotion female weight gain