Pinned contact line
Webbstick (pinning) mode, which shows that the pinning of the contact line during droplet evaporation on chemically stripe-patterned surfaces is actually a dynamic pinning … WebbContact line, pinning Plot the shape of the contact line pinned to a defect using Eq. X-30 for water on polyethylene, stearic acid, and platinum. Assume that the upper cutoff length is 2 mm. How does the shape of the pinned contact line compare with your observations of raindrops on dirty windows ...
Pinned contact line
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Webb21 juli 2024 · By using the theory of Taylor bubbles, the dynamic profile of the deposited liquid film is calculated within the lubrication approximation accounting for the finiteness of the film length, i.e. for the presence of the contact line. The latter is assumed to be pinned on a surface defect and thus immobile; the contact angle is allowed to vary. WebbObserved phenomena are explained by considering the contact line behavior at the rod–fluid interface. Transient evolution of the meniscus at the rod–fluid interface …
Webb4 feb. 2014 · We report a theoretical study of nanobubble stabilization on a substrate by contact line pinning. In particular, we predict the magnitude of the pinning force required … WebbExperimental and numerical investigations of water microdroplet evaporation on heated, laser patterned polymer substrates are reported. The study is focused on both (i) controlling a droplet’s contact line dynamics during evaporation to identifying how the contact line influences evaporative heat transfer and (ii) validating numerical …
WebbIn this approach, an intermediate contact angle is obtained such that the contact line is pinned. If this angle is within the hysteresis window, the solution is accepted; otherwise, the solution is abandoned and the contact line is moved with prescribed contact angles. Webb12 juli 2024 · One is a pinning condition with a fixed contact area, and the other is a nonpinning condition with a fixed contact angle. Evaporation with a pinning condition forces the random particles inside a droplet to move toward the pinned contact line. The particles are then deposited around the contact line. This physical process produces a …
WebbIn the often encountered regimes of low contact angles, evaporation time of a (printed) droplet with pinned contact line can be expressed, following Popov [95], as (9.14) where is the pinned contact diameter, is the liquid density, its molecular weight and is the diffusion coefficient of the liquid vapor at a temperature T into the surrounding air.
Webb15 feb. 2024 · The detailed height profiles close to the “coffee stain” area (Fig. 3 c) confirm the thickness depression in the centre and suggest that the contact line is permanently pinned and that the drop dries in accordance with the simulations performed by Park et al. [22] The experiments imply that the formation of the gelled region at the edge does not … community care powerpointWebbGeneralizing our recent variational characterization of fluid sloshing with surface tension to the case of a pinned contact line, we derive the pinned-edge linear shallow sloshing problem, which is an eigenvalue problem for a generalized Sturm-Liouville system. community care ppmsWebb2 dec. 2024 · ABSTRACT Effects of the Ohnesorge ( Oh) number and contact angle on the instability of a sessile rivulet are theoretically studied in this paper for both the pinned contact line (PCL) and moving contact line with invariant contact angle (MCL) conditions. community care ppoWebb26 okt. 2015 · We connect wettability, inertia, geometry of the impact object, interface bending and contact-line position with the contact-line pinning by analysing the force … community care po box 3249 tulsa ok 74101Webb2210ACL1904 ขายบ้านแฝดชั้นเดียว หมู่บ้านปิ่นฤทัย รังสิต-คลอง 7 เนื้อที่ 35.1 ตารางวา หน้ากว้าง 11 เมตร ลึก 13 เมตร พื้นที่ใช้สอย 143 ตารางเมตร 2 ห้องนอน 2 ห้องน้ำ ... duke oldsmobile used carsWebb1 sep. 2004 · At low amplitude, the contact line remains pinned and the drop presents eigen modes at different resonance frequencies. At higher amplitude, the contact line … duke ok countycommunity care ppo provider phone number