Biphilic jumping-droplet condensation
WebNov 9, 2024 · Sustaining dropwise condensation is of great importance in many applications, especially in confined spaces. In this regard, superhydrophobic surfaces … WebNov 5, 2024 · Such a droplet departure mechanism has the potential to reduce the droplet ejection volume and thus enhance the overall condensation efficiency, compared to coalescence-initiated droplet jumping from other state-of-the-art surfaces. Simulations have shown that optimal pyramid-shaped biphilic micro-structures can provoke droplet …
Biphilic jumping-droplet condensation
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WebAug 9, 2016 · Understanding the fundamental mechanisms governing vapor condensation on nonwetting surfaces is crucial to a wide range of energy and water applications. In this paper, we reconcile classical droplet growth modeling barriers by utilizing two-dimensional axisymmetric numerical simulations to study in … WebTo verify our simulation results, we study condensed water droplet growth using optical and environmental scanning electron microscopy on biphilic samples consisting of hydrophobic and nanostructured superhydrophobic regions, showing excellent agreement with the simulations for both constant base area and constant contact angle growth regimes.
WebJan 16, 2024 · Rapid and sustained condensate droplet departure from a surface is key toward achieving high heat-transfer rates in condensation, a physical process critical to …
WebJan 1, 2024 · The jumping droplet velocity for concentrated multidroplet coalescence at Oh≤0.10 still follows the inertial-capillary scaling with an increased prefactor, which … WebNov 4, 2024 · Abstract. Jumping droplet condensation on superhydrophobic surfaces exhibit increased heat transfer rate compared to dropwise condensation on hydrophobic …
WebJun 6, 2024 · Nenad Miljkovic, and Ryan Enright, “Biphilic Jumping-Droplet Condensation,” Cell Reports Physical Science, 3 (4), 100823,2024 . 2. Muhammad Jahidul Hoque, Soumyadip Sett, Derrick Liu, Kazi Fazle Rabbi, Longnan Li, Xiao Yan, Mansoor Qureshi, And Nenad Miljkovic, “Lifespan of Slippery Liquid Infused Surfaces During the …
WebFeb 26, 2024 · Surface structure length scale effects were shown to vanish for large droplets ( R i > 5 L). On the hierarchical biphilic surface, similar but more significant scattering of the jumping velocity and direction was observed. Droplet-size-dependent surface adhesion and pinning-mediated droplet rotation were responsible for the reduced jumping ... birsafety gmbh co. kgWebApr 8, 2024 · Suffering from the adhesion of condensing water droplets, surface condensation performance is severely degraded. On a biphilic surface, condensing droplets efficiently nucleate while spontaneously … dan healey brimfield massWebFor example, a biphilic surface design with hydrophilic spots ( ≤ 60°), pitch ratio = 8.35, and = 0.15 is expected to enable droplet jumping and gives a model condensation heat … birsa agricultural university ranchi vacancyWebApr 20, 2024 · To maximize the droplet jumping height on a biphilic surface, Zhu et al. develop a droplet jumping theory, considering the surface structure, orientation, and air pressure. The optimized biphilic surface significantly enhances the condensation heat transfer, which benefits various thermal applications. dan healey belmont maWebFigure 4. The steady-state single droplet condensation heat flux as a function of droplet radius for hydrophilic, hydrophobic, and 2 mm biphilic substrates. (A) The heat flux is … birsa high schoolWebDroplet nucleation and condensation are ubiquitous phenomena in nature and industry. Over the past century, research has shown that heat transfer rates during steam dropwise condensation on nonwetting (e.g., hydrophobic) surfaces can be 10× higher than widely accepted filmwise condensation on wetting substrates (1–4).However, the need for … dan hayward art glass for saleWebJan 1, 2024 · Suffering from the adhesion of condensing water droplets, surface condensation performance is severely degraded. On a biphilic surface, condensing droplets efficiently nucleate while spontaneously being effectively removed from the surface due to the coalescence-induced droplet jumping phenomenon, significantly improving … birsa institute of technology ranchi