Impinging jets and droplet dynamics

Author: cvhj

August undefined, 2024

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 … 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.

Experimental study of impinging jets of gelled and liquid fluids

Witryna1 paź 2014 · Comparison between hydrodynamics of multijet atomisation with 2 and 3 impinging jets. • Drop size is closely related with azimuthal location of droplets formation. • Jet dynamics has similar influence in atomisation of 2- and 3-impinging jet sprays. • Atomizer geometry is particularly influential for 3-impinging jets sprays. • Witryna13 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... solomon myriad skis for women

Experimental study of impinging jets of gelled and liquid fluids

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 … Witryna1 wrz 1998 · An analysis of the characteristics of the spray produced by an impinging‐jet injector is presented. Predictions of the spray droplet size and distribution are … solomon moving company

Passive Anti-Icing Performances of the Same …

(PDF) Droplet dynamics under an impinging air jet - ResearchGate

Witryna1 kwi 2024 · The characteristics of horizontally opposed water jets in the absence and presence of an impinging air jet are investigated visually with high speed camera and quantitatively using phase Doppler ... 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 … solomon navy recreation centerWitryna31 sie 2007 · For collisionsleading to absorption and partial absorption, for which part of the absorbed droplet is subsequently ejected from the film, rupture and hence merging of the interfaces were manually imposed at an instant that leads to agreement between the subsequent calculated and experimental images. small bingo prizes for seniors

"WitrynaThe maximum droplet spread diameter, velocity of the rebounding jet, and the time delay between droplet impact and jet emission were characterized for Weber numbers, … " - Impinging jets and droplet dynamics

Impinging jets and droplet dynamics

Droplet generation during liquid jet impingement onto a …

WitrynaRecent experiments by Hooshanginejad et al. (J. Fluid Mech., vol. 901, 2024) revealed that a millimetric partially wetting water droplet under an impinging jet can oscillate in place, split or depin away from the jet, depending on the … 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 …

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Witryna13 paź 2024 · The dynamic characteristics of droplets impinging on the cylinder were observed to be similar to those of droplets impinging on horizontal plates of the same … 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 …

WitrynaUnderlying processes governing droplet dynamics are investigated by analyzing the overall energy budget. In addition, an advanced visualization technique using the Ray … 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

WitrynaWhen a droplet impacts a solid surface, the entrapment of a submillimeter-sized bubble and the emission of a high speed jet can be observed at low impact velocities. In this work, we show that bubble entrapment occurs only on sufficiently hydrophobic surfaces within a narrow range of impact velocities. Witryna10 lis 2024 · The chemical composition of the droplet changes as the level of salts increases and the droplet crystallizes in a solid state. ... , where it was shown that for an impinging jet, all LES models are capable of capturing small-scale dynamics, and WALE and ... One of the advantages of using numerical methods in studying jet flow …

Witryna28 lis 2024 · The effect of plasma fluctuations on the in-flight droplet/particle behavior was studied by Dalir et al. [16,17,18]. It was shown that suspension penetration depth, as well as droplet/particle trajectory, temperature, and velocity, are a strong function of plasma jet fluctuations and injection properties such as injection velocity.

Witryna1 cze 2024 · Typical outcomes of an impinging droplet on a solid surface a Deposition indicates that the droplet deforms and stays attached to the surface. b Prompt splash is characterised by the generation of ... small bin hire morningtonWitrynaImpinging 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). solomonocr user font teachingWitryna22 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 … small binishell homesWitryna19 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 … solomon nichols 1719Witryna20 kwi 2006 · In a high-speed subsonic jet impinging on a flat plate, the surface pressure fluctuations have a broad spectrum due to the turbulent nature of the high … small bin hireWitrynaOne 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. solomon northrup bioWitryna14 paź 2012 · Impinging-jet injectors are widely used in liquid propulsion applications, since their simple configuration provides reliable and efficient atomization. solomon northup\u0027s son alonzo northup