On the spreading of impacting drops
WebLiquid drops impacting onto a solid surface present very important and fascinating phenomena, which are also of great importance in many practical processes, such as … 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 ...
On the spreading of impacting drops
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WebThe energy budget and dissipation mechanisms during droplet impact on solid surfaces are studied numerically and theoretically. We find that for high impact velocities and … 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.
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 … Web18 de jan. de 2005 · On the maximum spreading diameter of impacting droplets on well-prepared solid surfaces Langmuir. 2005 Jan 18;21(2):666-73. doi: 10.1021/la0481288. ... Our data for the maximum spreading diameter of water and formamide impacting on these surfaces were compared with those predicted from literature models.
Web15 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 … Web12 de set. de 2024 · The maximal spreading ratio of the compound drop is found to depend on the volume fraction of the inner droplet 𝛼, the surface tension ratio 𝛾, the Weber number …
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 …
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 … great run manchesterWebThis 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 ... flora healthcare center flora ilWeb8 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 … great runners in historyWeb5 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 … great running and work shoesWeb3 de set. de 2024 · The effects of the Weber number, contact angle, and sphere-to-droplet diameter ratio ( D*) on the droplet impacting on a spherical surface are further studied by numerically calculating the spreading factor and the spreading arc angle corresponding to the two-dimensional wetting arc at the maximum spreading state. great running backs at syracuseWeb11 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 … great running backs of the nfl bookWeb12 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. great run newcastle