WebMay 20, 2016 · The effects of water droplet impact velocity and different surface temperature on water droplet morphology evolution, water droplet spreading factor … WebJun 28, 2024 · Droplet impacts on cold surfaces. Abstract We study drop impact for the case where the impacted surface is cooled below the freezing temperature of the liquid …
Did you know?
WebJan 31, 2024 · Coalescence-induced self-propelled jumping of droplets on superhydrophobic surfaces has potential applications for condensation heat transfer enhancement, anti-icing, self-cleaning, antidew, and so forth. However, most of the previous studies focused on two identical droplets which are not commonly encountered in the nature. In this work, … WebAug 10, 2024 · Figure 2: Droplet impacts (V 0 = 0. 25 m.s − 1) on di erent glass surfaces at 22°C and-34°C with the associated spreading dynamics. Snapshots taken at 0.2s after …
WebNov 28, 2024 · Suspension plasma spraying (SPS) is an effective technique to enhance the quality of the thermal barrier, wear-resistant, corrosion-resistant, and superhydrophobic coatings. To create the suspension in the SPS technique, nano and sub-micron solid particles are added to a base liquid (typically water or ethanol). Subsequently, by using … WebNov 15, 2024 · If the droplet is very cold, and the bath sufficiently hot, then the droplet should "levitate" on the bath's surface, as a result of the flows induced by the temperature difference.
WebExperimental investigation of water droplet impact and freezing on micropatterned stainless steel surfaces with varying wettabilities Xili Duan 2024, International Journal of Heat and Mass Transfer WebMay 10, 2024 · Droplet impacts on solid surfaces are ubiquitous in nature and industry. Before impact, the droplet shape may be affected by gravity, shear flow, and the electric and magnetic fields, inducing non-spherical droplets. However, most previous studies focused on the impact dynamics of spherical droplets.
WebThese models do not consider impacts, i.e. drops falling onto the surface with non-zero velocities, but only spreading drops. Recently, Thiévenaz et al. (2024) proposed another …
WebAug 24, 2024 · Xu, L. Tian, and C. Zhu, “ Reduction in the contact time of droplet impact on superhydrophobic surface with protrusions,” Phys. Fluids 33(7), 073306 (2024). https ... pouetta raisseWebDec 16, 2010 · The Impact Regimes. When a droplet impacts onto a solid surface, different outcomes may arise depending on the dynamics of the interactions occurring at the liquid-solid interface which, for impacts onto cold, rigid and dry surfaces, include: (1) stick, (2) spread, (3) disintegration or (4) rebound. poueyto josyWebDroplet impacts on cold surfaces 1. Introduction. Understanding how liquid droplets impact and spread onto a surface is crucial for several processes... 2. Materials and methods. Figure 1 shows the experimental set-up. The substrate, aluminium or glass, is cooled … poufs on saleWebAbstract. Upon impact on a solid surface, a drop expands into a sheet, a corona, which can rebound, stick or splash and fragment into secondary droplets. Previously, focus has been placed on impacts of single drops on surfaces to understand their splash, rebound or spreading. This is important for spraying, printing, and environmental and ... han ruotsiWebApr 10, 2024 · As a droplet impacts a bare solid superhydrophobic surface, the contact time is independent of the impacting speed, i.e., t c = 2.2 ρ R 3 / γ . However, the contact time of the droplet on the superhydrophobic mesh is not constant and decreases as the impacting speed increases on the superhydrophobic mesh. hanro verkooppuntenWebSep 21, 2007 · Impact velocity was varied from 0.5 to 2.7 m/s and surface temperature from 23 to 73 C. Droplet impact was photographed, and the splat diameter and liquid-solid contact angle measured from ... han ruonan mitWebMar 25, 2015 · To study ice adhesion at the droplet scale, a strategy is presented to simulate the impact and solidification of a supercooled water droplet on a cooled substrate. Upon impact, nucleation is assumed to occur instantaneously, and properties of the droplet are chosen to account for the nucleation process. Simulations are performed in ANSYS … hansa24 kiel