Breakup process of liquid jet in gas film

Author: wlbp

August undefined, 2024

WebJan 1, 2024 · A two-phase Large Eddy Simulation (LES) has been conducted to investigate breakup and atomization of a liquid jet in a cross turbulent flow in a rectangular duct. … Webinjected into a swirling crossﬂow of gas. The liquid is injected radially outwards from a central tube to a conﬁned annular space with a swirling gas crossﬂow. The essential …

Optofluidic Resonance of a Transparent Liquid Jet Excited by a ...

WebJet breakup It has been postulated that jet breakup is the result of aerodynamic interaction between the Hquid and the ambient gas. Such theory considers a column of Hquid emerging from a circular orifice into a surrounding gas. The instabiHty on the Hquid surface is examined by using first-order linear theory. A small perturbation is imposed on the … WebJan 12, 2010 · Cold flow experiments on the liquid sheet breakup were carried out by employing custom fabricated gas-centered swirl coaxial atomizers using water and air as … otago university engineering

Aerodynamic primary breakup at the surface of nonturbulent …

Webinjected into a swirling crossﬂow of gas. The liquid is injected radially outwards from a central tube to a conﬁned annular space with a swirling gas crossﬂow. The essential features of the jet breakup involving jet ﬂattening, surface waves and stripping of droplets from the edges of the jet are captured in the simulations. WebJun 1, 2024 · The gas film broke at different positions from the top of the jet column, and the small bubbles and droplets were released from the surface of the liquid film into the water. However, the jet velocity of the penetrating liquid decreased under the drag force from water body; for the next stage, the separated vapor bubbles were formed rapidly ... WebKeywords: Liquid jet, instability, break-up length, Weber number. 1. Introduction The instability and disintegration of liquid jets at low Weber numbers is of importance in many atomization applications. These include drug delivery, coatings and electronic cooling, among others. Breakup of a liquid jet stream from nozzle orifice leads to otago university foreign policy school

Liquid Sheet Breakup in Gas-Centered Swirl Coaxial Atomizers

Understanding the breakup behaviors of liquid jet in gas …

WebOct 3, 2012 · Breakup process of liquid jet in gas film. Acta Physica Sinica, Vol. 70, No. 5. Effects of nanoparticles on the instability of liquid jets in a gaseous crossflow. International Journal of Multiphase Flow, Vol. 133. Experimental and numerical investigation of cross-sectional structures of liquid jets in supersonic crossflow. WebThis process is shown to consist of the periodic stripping of liquid sheets, or ligaments, which subsequently break up into smaller lumps or drops. Models to predict the liquid … otago university alumniWebExperimental study on the spray characteristics of a gas–liquid pintle injector element. Xu Jin, Chi-bing Shen, S. Lin, R. Zhou. Engineering. Journal of Visualization. 2024. As a … rockdale county jail log

"WebApr 1, 2024 · In gas-driven flow focusing, mechanical disturbance is applied to modulate formation of droplets under the condition that the jet breaks at a high speed. By changing … " - Breakup process of liquid jet in gas film

Breakup process of liquid jet in gas film

Liquid Jet Breakup at Low Weber Number: A Survey

WebMay 2, 2012 · Breakup process of liquid jet in gas film. Acta Physica Sinica, Vol. 70, No. 5. Characterization of spray formed by diesel-water mixture jet injection into an air crossflow. Fuel, Vol. 282. Effects of nanoparticles on the instability of liquid jets in … Webliquid jet injected into a strong crossflow. Parameters investigated include liquid injection velocity, gas velocity and liquid surface tension. Their flow visualisation study has revealed a series of events taking place during the liquid jet breakup process. Breakup first starts at the liquid jet surface from which some liquid fragments are

Did you know?

WebFeb 1, 2024 · The liquid breakup process generated by a rotary atomizer is very similar to the breakup of a liquid jet or a thin liquid sheet in a gas cross flow. As the liquid film … WebDec 29, 2003 · The situation of a small-diameter liquid jet exposed to a large-diameter high-speed gas jet (gas-to-liquid nozzle area ratio of order 100 to 1000) is investigated …

WebMay 3, 2006 · The liquid and air are treated as a single continuum with dynamically evolving interfaces captured by the level-set method. The jets considered are laminar: the jet exit Reynolds number ranges from 480 to … WebDec 10, 2024 · The capillary wave enables the liquid-gas interface to serve as a rotating mirror reflecting the laser beam in a wide range of angles, including the critical angle for total internal reflection. ... The jet breakup process locks in at the frequency corresponding to the peak growth rate of the Rayleigh-Plateau instability of the liquid jet ...

WebBreakup of liquid jets issuing from converging (cone-up type) nozzles in a quiescent atmosphere is reviewed in the present paper. ... While the general process of jet breakup, turbulence, and ambient effects are fairly well comprehended, the effects (and the interplay) of various other parameters are poorly understood. ... INSTANTANEOUS AND ... WebJun 5, 2024 · The study of elliptical liquid jets in supersonic flow in a Mach 2.0 is performed numerically. The primary breakup process of the elliptical liquid jet is simulated for a Weber number 223, liquid/gas flux momentum 4.0. The aspect ratios of elliptical geometries are set to be 0.25, 0.5, 1, 2, and 5. The results show a remarkable difference in liquid jet …

WebBased on research into jets in supersonic crossflow carried out by the authors’ team over the past 15 years, this book summarizes and presents many cutting-edge findings and analyses on this subject. It tackles the complicated mixing process of gas jets and atomization process of liquid jets in supersonic crossflow, and studies

WebSep 21, 2024 · Reducing the thickness of the fuel annular film will weaken the stable inertia of the fuel, make the fuel annular jet easier to break up, and enhance the primary breakup scale. Furthermore, increasing the outer or inner gas density can accelerate the annular spray breakup process, and also amplify the gain effect of airflows. otago university hsfyWebMar 12, 2024 · Published 12 March 2024. Physics. Physics of Fluids. In this study, the effects of the bubble on the liquid jet breakup process were investigated using a high-speed camera. The liquid jet containing bubbles revealed a considerable decrease in the breakup length when compared with the water jet without bubbles, which promoted the … rockdale county launchpadWebFeb 1, 2024 · The liquid breakup process generated by a rotary atomizer is very similar to the breakup of a liquid jet or a thin liquid sheet in a gas cross flow. As the liquid film emerges from the injection orifice, it converts to a single liquid column or liquid sheet depending on the channel geometry, the fuel physical properties, and the atomizer ... otago university holiday 2023WebJun 17, 2024 · The breakup length and position of liquid jet are the important parameters to determine the atomization quality. In this paper, the nonlinear dispersion equation is … rockdale county jail viewWebAug 24, 2024 · The results show that there are two main breakup processes of liquid jet in gas film: column breakup and surface breakup. The local high-pressure zone in front of the liquid jet makes the jet have a large normal velocity gradient, which causes R-T instability. otago university gradingWebOct 1, 2024 · Modern spray-coating processes are based on high-volume, low-pressure, airless atomization or high-speed rotary bell atomization, often assisted by electrostatic charging to increase the transfer efficiency. The process from the liquid film flow beneath the bell, through ligament formation and consecutive disintegration to droplet deposition, … rockdale county jobs opportunitiesWebthe breakup process were also studied, finding that ... affect liquid jet breakup properties,4 were not well ... range 0.00006-0.3; the ratio of liquid-to-gas momentum fluxes , q, of 100-8000; and the ratio of liquid-to-gas densities, p/p^, of … rockdale county jail inmates mugshots