Impinging jets and droplet dynamics

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August undefined, 2024

Witryna5 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. 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 …

Aerospace Free Full-Text Effects of Nozzle Pressure Ratio and ...

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. 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 … phone has dial tone but won\u0027t call out

Submillimeter-Sized Bubble Entrapment and a High-Speed Jet …

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. 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, … 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 … how do you measure luminosity of stars

Impinging Jets and Droplet Dynamics - arXiv

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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. • 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 … phone has charging symbol but won\u0027t chargeWitryna19 kwi 2016 · The head-on collision, merging and internal mixing dynamics of two unequal-sized droplets were experimentally studied and interpreted, using water, n … phone has data but can\u0027t make calls

"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 … " - Impinging jets and droplet dynamics

Impinging jets and droplet dynamics

Witryna2 gru 2024 · If the kinetic energy of falling droplets can be reduced, the waste caused by the Worthington jet and splashing droplets can be effectively reduced. The present study can lay basis for the design of the steam-water separator and the space droplet radiator. Download to read the full article text References 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 ...

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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. 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 …

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 ... 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 …

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 … Witryna16 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 …

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 …

Witryna31 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. how do you measure metabolic rateWitryna1 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 … how do you measure megahertzWitryna14 paź 2012 · Impinging-jet injectors are widely used in liquid propulsion applications, since their simple configuration provides reliable and efficient atomization. phone has diedWitrynaWhen 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. how do you measure noise levelsWitryna24 cze 2024 · The dynamic interaction of droplets with slippery surfaces is essential to various industrial applications, such as anti-icing, water-repellency or water … phone has dial tone but does not ringWitryna16 paź 2012 · The predicted liquid sheet topology, atomization, and droplet size distribution agree well with experimental measurements. In this fluid dynamics video, … how do you measure newtons of forceWitryna14 paź 2011 · Abstract: In this fluid dynamics video, results from high fidelity numerical simulations are presented, which have been carried out to study the flow and droplet … how do you measure mets