Impinging jets and droplet dynamics

Author: qdsd

August undefined, 2024

WitrynaIn this fluid dynamics video, Ray-tracing data visualization technique was used to obtain realistic and detailed flow motions during impinging of two liquid jets. Different patterns of sheet and rim configurations were presented to shed light into the underlying physics, including liquid chain, closed rim, open rim, unstable rim and flapping sheet. Witryna19 sty 2024 · Within the laboratory dynamic icing tests, the SS1 SHSs with micromountain heights of 20–30 μm performed optimally in the antiadhesion of supercooled droplets (at an impinging velocity of 3.4 …

Dynamic behavior of water droplets impinging on a heated

Witryna10 lip 2016 · The objective of this study is to characterize flow parameters for two-dimensional turbulent jets impinging on a flat surface. An integral form of the momentum equation has been used to obtain a ... WitrynaIn sodium-cooled fast reactors, liquid sodium leakage from piping may lead to fire accident. In the case that the liquid sodium is discharged as a liquid jet, a number of droplets are produced during liquid jet impingement on the structures; the surfaces of splashed droplets serve as a main reaction field of sodium combustion. In the present … earlsdon post office opening times

Droplet dynamics under an impinging air jet - cambridge.org

Witryna24 cze 2024 · The dynamic interaction of droplets with slippery surfaces is essential to various industrial applications, such as anti-icing, water-repellency or water … Witrynaof the jet. To rationalise the experimental observations, we develop a two-dimensional lubrication model of the droplet that incorporates the external pressure of the … Witryna12 kwi 2024 · Mallory and P. E. Sojka, “ On the primary atomization of non-Newtonian impinging jets: Volume I experimental investigation,” Atomization Sprays 24(5), 431 ... Dynamics of a droplet impacting a thin film on a glass substrate: (a) impacting droplet, (b) spreading of the droplet, (c) initiation of the crown, (d) radial and axial growth of … css noctuagg

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WitrynaTheir experiments revealed three distinct behaviours of the droplet: droplet oscillating in place, splitting and depinning to one side of the jet, depending on the strength and … Witryna22 maj 2012 · The maximum droplet spread diameter, velocity of the rebounding jet, and the time delay between droplet impact and jet emission were characterized for Weber numbers, We, based on droplet impact speed and diameter, up to 500. The unequal shear stresses and contact angles influence the maximum spread diameters in the … css no childrenWitrynadroplet dynamics of liquid sheets formed by two impinging jets. A three-dimensional Volume-of-Fluid (VOF) method with adaptive mesh re nement (AMR) based on octree … css no child selector

"Witryna19 kwi 2016 · The head-on collision, merging and internal mixing dynamics of two unequal-sized droplets were experimentally studied and interpreted, using water, n … " - Impinging jets and droplet dynamics

Impinging jets and droplet dynamics

Simultaneous Effect of Droplet Temperature and Surface

Witryna1 cze 2014 · Droplet impingement is a common phenomenon is industrial and daily life, such as spray cooling, droplet impact on the outer surface of heat transfer tube in falling film evaporators, oil drop impact on the internal wall of diesel engine combustion chamber, as well as rain-drop falling onto the ground and aircraft also involving drop … WitrynaImpinging Jets and Droplet Dynamics. In this fluid dynamics video, results from high fidelity numerical simulations are presented, which have been carried out to study the …

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Witryna25 lip 2024 · one-way coupling of the e xter nal pressure from the impinging jet on the droplet, which allows us to treat the jet pr oﬁle as steady and independent of the … Witryna20 wrz 2024 · An experimental study was conducted to investigate the breakup of a liquid sheet produced by oblique impingement of a liquid jet on a plane solid surface. Experiments are carried out over a wide range of jet Weber number (80–6300) and various jet impingement angles (30 deg, 45 deg, and 60 deg) are employed to study …

WitrynaIn this fluid dynamics video, Ray-tracing data visualization technique was used to obtain realistic and detailed flow motions during impinging of two liquid jets. Different … WitrynaDroplet dynamics under an impinging air jet Partially wetting droplets under an airflow can exhibit complex behaviours that arise from the coupling of surface tension, inertia …

Witryna30 lis 2015 · The impact of droplets on a deep pool has applications in cleaning up oil spills, spray cooling, painting, inkjet printing, and forensic analysis, relying on the changes in properties such as viscosity, interfacial tension, and density. Despite the exhaustive research on different aspects of droplet impact, it is not clear how liquid … WitrynaOne aspect of previous investigations that has received modest attention is the dynamics associated with the ver- tical jet that prevails during the droplet collapse portion of the impingement process. For a narrow range of We, very thin jets with attendant high velocity have been observed.

Witryna16 kwi 2024 · The cavity depth and cavity velocity for both droplet and jet impact are rationalized by an energy scaling analysis and the Bernoulli equation. JFM classification Drops and Bubbles: Drops and Bubbles Interfacial Flows (free surface): Interfacial Flows (free surface) Wakes/Jets: Jets Type JFM Papers Information

Witryna14 paź 2011 · High-fidelity numerical simulations have been performed to study the formation and fragmentation of liquid sheets formed by two impinging jets using an … css niles ohioWitryna16 lut 2024 · Published 16 February 2024. Physics, Engineering. We investigate experimentally the jet formed by the collapse of a cavity created by the impact of a drop on a pool of the same aqueous liquid. We show that jets can emerge with very different shapes and velocities, depending on the impact parameters, thus generating droplets … earlsdon park car parkWitryna5 lis 2024 · In this chapter, spray cooling is reviewed from two aspects: the entire spray (spray level) and droplets (droplet level). The discussion on the spray level is focused on the spray cooling performance as a function of fluid properties, flow conditions, surface conditions, and nozzle positioning. earlsdon post office phone numberWitryna13 lip 2024 · Existing studies have revealed that the dynamics of an impinging droplet is not only influenced by its physical properties but also affected by the surface wettability 7, 8, the substrate... earlsdon primaryWitryna22 wrz 2024 · Dynamics of single droplets impacting on solid surfaces is a fascinating and practically important fluid mechanics phenomena [1–8].Individual droplet collision on a solid substrate is common in many technological processes such as ink–jet printing, rapid spray cooling, plasma spray coating, fuel injection, catalytic wetting, etc. … earlsdon post office coventryWitrynaImpinging jets at low velocities form initially a sheet in a plane perpendicular to the plane containing the momentum vectors of the jets, as seen on Fig. 1. Waves are formed on the surface of this sheet and grow until sheet fragmentation into ligaments at a certain breakup length, which eventually break into droplets (Fakhri et al., 2010). earlsdon primary coventryWitryna12 kwi 2024 · In this paper, we focus on the evolution of jets that form during the recoil of impinging drops on partially wetting hydrophilic substrates composed of cylindrical … earlsdon rfc pitchero