Numerical Simulation of the Breakup of Elliptical Liquid Jet in Still Air

Farvardin, Ehsan; Dolatabadi, Ali

doi:10.1115/1.4024081

Cited by 38 publications

(5 citation statements)

References 13 publications

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“… Mass conservation  Handling flows with large density ratios (liquid-to-gas ratio)  Accurate interface representation and advection  Spurious currents Among the mentioned interface tracking/capturing methods, volume of fluid (VOF) is widely used to simulate the primary atomization [207,[226][227][228][229][230][231][232][233][234]. Moreover, the pros and cons of this method are extensively studied based on the mentioned four issues [208,225].…”

Section:  Fully Lagrangian Methodsmentioning

confidence: 99%

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A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

2015

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Abstract:In thermal spraying processes, molten, semi-molten, or solid particles, which are sufficiently fast in a stream of gas, are deposited on a substrate. These particles can plastically deform while impacting on the substrate, which results in the formation of well-adhered and dense coatings. Clearly, particles in flight conditions, such as velocity, trajectory, temperature, and melting state, have enormous influence on the coating properties and should be well understood to control and improve the coating quality. The focus of this study is on the high velocity oxygen fuel (HVOF) spraying and high velocity suspension flame spraying (HVSFS) techniques, which are widely used in academia and industry to generate different types of coatings. Extensive numerical and experimental studies were carried out and are still in progress to estimate the particle in-flight behavior in thermal spray processes. In this review paper, the fundamental phenomena involved in the mentioned thermal spray techniques, such as shock diamonds, combustion, primary atomization, secondary atomization, etc., are discussed comprehensively. In addition, the basic aspects and emerging trends in simulation of thermal spray processes are reviewed. The numerical approaches such as Eulerian-Lagrangian and volume of fluid along with their advantages and disadvantages are explained in detail. Furthermore, this article provides a detailed review on simulation studies published to date. OPEN ACCESSCoatings 2015, 5 577

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Section:  Fully Lagrangian Methodsmentioning

confidence: 99%

“…α | α | ⁄ is the interface curvature [235]. The large eddy simulation (LES) method can be applied for turbulence modeling [230,247,248].…”

Section:  Fully Lagrangian Methodsmentioning

confidence: 99%

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

2015

Self Cite

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“…On the whole, a study of the oil-air two-phase flow in the under-race lubrication system needs to accurately capture the different motion patterns of the lubricant oil through phase interface tracking. The performance of the VOF method has been fully evaluated in the simulation of liquid jet breakup [19,20] and unsteady oil-gas two-phase flow in a bearing cavity [21,22].…”

Section: Two-phase Flow and Turbulence Modelsmentioning

confidence: 99%

Numerical and Experimental Investigations to Assess the Impact of an Oil Jet Nozzle with Double Orifices on the Oil Capture Performance of a Radial Oil Scoop

Jiang,

Lyu,

et al. 2023

Aerospace

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To study the influence of orifice spacing on the oil–air two-phase flow and the oil capture efficiency of an oil scoop in an under-race lubrication system, an experimental platform for under-race lubrication was built, and a calculation model for the oil–air two-phase flow field was established. The rationality of the experiment and the validity of the numerical model were verified by comparing the experimental and numerical results. The results showed that under the same oil supply pressure, the captured oil mass flow rate of the double-orifice structure was much higher than that of the single-orifice structure, though it was still less than twice that of the single-orifice structure. When applying a tandem layout structure of double orifices to an under-race lubrication system, the orifice spacing of the tandem layout structure should be determined based on a full evaluation of the influence of the orifice spacing and working condition parameters on the oil capture performance. Otherwise, it may lead to a decrease in oil capture efficiency, with the maximum reduction even reaching 12%.

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“…In this study, the stages of the jetting regime are investigated experimentally and numerically by a computational fluid dynamics model implemented in ANSYS Fluent. Numerical simulations have been an important tool and have supplied extensive information about various studied phenomena [9,10], including liquid jets and their breakup [11,12]. By use of the CFD model, we determine the velocity distributions during drop formation and pinch-off at various sections throughout the liquid jet.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigations of the jetting regime

Tanase

Rasuceanu

Bălan

2023

IOP Conf. Ser.: Earth Environ. Sci.

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In this paper we highlight the first stages of liquid injection through a capillary nozzle prior to the jet formation regime. We emphasize the asymmetry of water-air interface at the beginning of the injection of liquid and the axial symmetry which follows when the jet is fully formed. Numerical simulations are performed in order to estimate the relaxation of the velocity distribution of the liquid as it leaves the capillary nozzle. The plug flow condition for low-viscosity liquid jets is investigated in relation with the parabolic velocity distribution in the nozzle. The numerical data is also used to characterize the flow during the drop formation and pinch-off, both driven by the action of surface tension.

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Numerical Simulation of the Breakup of Elliptical Liquid Jet in Still Air

Cited by 38 publications

References 13 publications

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

A Comprehensive Review on Fluid Dynamics and Transport of Suspension/Liquid Droplets and Particles in High-Velocity Oxygen-Fuel (HVOF) Thermal Spray

Numerical and Experimental Investigations to Assess the Impact of an Oil Jet Nozzle with Double Orifices on the Oil Capture Performance of a Radial Oil Scoop

Experimental and numerical investigations of the jetting regime

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