2024 On the spreading of impacting drops

On the spreading of impacting drops

Author: iodc

August undefined, 2024

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 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 …

The Effect of Surface Roughness on the Contact Line and …

Web10 de jun. de 2024 · For larger values of the inclination angle, the final shape of the drop can be approximated by an ellipse whose major and minor semiaxes can also be … 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 … michel fleury semtech

Spreading and oscillation induced by liquid drop impacting onto …

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 … Web1 de jan. de 2024 · This suggests that the impacting drop looks like to be engulfed and spreading behaves as a combined liquid mass. Thus, the combined liquid spreading … WebStudies of water drop impacts on microstructured surfaces are important for understanding dynamic wetting on rough surfaces, and for developing related design principles. Here, high-speed imaging has been used to study asymmetries within the spreading phase following vertical water drop impacts at Weber numbers between 34 and 167. michel fixot

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

Drop impacting on a surface with adjustable wettability based …

WebAuthor: Wildeman, S. et al.; Genre: Journal Article; Published in Print: 2016-10; Keywords: Drops; Drops and bubbles; Interfacial flows (free surface); Title: On the ... 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 … michel finis mundiWebThis 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 ... michel field peintre

"Web3 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. " - On the spreading of impacting drops

On the spreading of impacting drops

On the maximum spreading diameter of impacting droplets on …

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 abr. de 2024 · Superhydrophobic surfaces could repel water due to the capillary force associated with surface roughness, which has a large range of applications, such as underwater drag reduction, heat transfer enhancement, oil/water separation, and so on. However, the engineering applications of superhydrophobic surfaces rely on the stability …

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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. Web1 de mar. de 2016 · The analysis reveals that contact line pinning offers a physically meaningful justification of the observed deviation ofβm,⊥ from βm,∥ compared to other possible candidates. Maximum spreading of liquid drops impacting on solid surfaces textured with unidirectional parallel grooves is studied for drop Weber number in the …

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 … 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 …

Web1 de out. de 2012 · We present an experimental study of drop impact on a solid surface in the spreading regime with no splashing. Using the space–time-resolved Fourier …

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 ...

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 … the nevers arabic subtitles episode 2WebThis 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 ... the nevers actressWeb18 de out. de 2024 · Air film curvature ahead of the contact line drives fast-spreading dynamics during droplet impact and spreading on a smooth surface. The fast-spreading process could lead to wetting failure and bubble entrapment. Reducing the surface tension of the impacting drop increases the critical capillary number threshold for wetting failure … michel florisWeb14 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.-C. Wang, J.-T. Feng, and Y.-P. Zhao, “ The head-on colliding process of binary liquid droplets at low velocity: High-speed photography experiments and modeling,” J. Colloid Interface … michel first nationWeb1 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 … the nevers actorsWeb15 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 … the nevers allocinéWebUkiwe, C. & Kwok, D. Y. 2005 On the maximum spreading diameter of impacting droplets on well-prepared solid surfaces. Langmuir 21 ( 31 ), 666 – 673. CrossRef Google … the nevers ao3