The Influence of Atomizing Gas Molecular Weight on Low Mass Flowrate Effervescent Atomizer Performance

Lund, M. T.; Jian, Christopher; Sojka, Paul E.; Gore, J. P.; Panchagnula, Mahesh V.

doi:10.1115/1.2820733

Cited by 19 publications

(6 citation statements)

References 8 publications

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“…Of course, mean droplet size definitions other than the SMD exist. In fact an argument can be made that the volume-to-length mean diameter, d (3,1), is a more rigorous choice for describing evaporation of drops in sprays. Calculations of d(3,1) were made and found to be extraordinarily small (<10 mm), too small to be physically meaningful.…”

Section: Resultsmentioning

confidence: 99%

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Establishment of Analytical Model for Peak Temperature Within a Sodium-Water Reaction Jet, (II) Mean Droplet Size in a Submerged Gas Jet

Epstein¹,

Fauske²,

Yoshioka³

2005

J. Nucl. Sci. Technol.

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This is a second paper that describes work carried out to aid in the development of an analytical model to predict the peak temperature in a sodium-water reaction jet. Specifically, an experimental investigation was performed to determine the effective droplet size (Sauter mean diameter: SMD) in the near field of a submerged jet. A sufficient number of experiments involving jet-airblast atomization of a shallow liquid water layer were carried out to evaluate the effects of injector diameter, injection pressure, orifice submergence and sampling location on the SMD. Despite the scatter in the data believed to be the result of jet unsteadiness, a reasonable correlation for the SMD was achieved by assuming that the submerged jet behaves much like a plain-jet airblast atomizer.

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Section: Resultsmentioning

confidence: 99%

“…Actually the software that accompanies the Malvern laser calculates d (3,2). Several independent calculations of d(3,2) were made to check the Malvern software computations.…”

Section: Resultsmentioning

confidence: 99%

Establishment of Analytical Model for Peak Temperature Within a Sodium-Water Reaction Jet, (II) Mean Droplet Size in a Submerged Gas Jet

Epstein¹,

Fauske²,

Yoshioka³

2005

J. Nucl. Sci. Technol.

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“…The radius of gas flow can be written in terms of orifice radius r orific and void fraction ϑ, r g = √ ϑr orifice . The interface velocity slip ratio v slip under different flow rate is expressed as [34]:…”

Section: Sub-model Of Primary Atomizationmentioning

confidence: 99%

Numerical Models for Viscoelastic Liquid Atomization Spray

2016

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Atomization spray of non-Newtonian liquid plays a pivotal role in various engineering applications, especially for the energy utilization. To operate spray systems efficiently and well understand the effects of liquid rheological properties on the whole spray process, a comprehensive model using Euler-Lagrangian approaches was established to simulate the evolution of the atomization spray for viscoelastic liquid. Based on the Oldroyd model, the viscoelastic linear dispersion relation was introduced into the primary atomization; an extended viscoelastic version of Taylor analogy breakup (TAB) model was proposed; and the coalescence criteria was modified by rheological parameters, such as the relaxation time, the retardation time and the zero shear viscosity. The predicted results are validated with experimental data varying air-liquid mass flow ratio (ALR). Then, numerical calculations are conducted to investigate the characteristics of viscoelastic liquid atomization process. Results showed that the evolutionary trend of droplet mean diameter, Weber number and Ohnesorge number of viscoelastic liquids along with axial direction were qualitatively similar to that of Newtonian liquid. However, the mean size of polymer solution increased more gently than that of water at the downstream of the spray, which was beneficial to stable control of the desirable size in the applications. As concerned the effects of liquid physical properties, the surface tension played an important role in the primary atomization, which indicated the benefit of selecting the solvents with lower surface tension for finer atomization effects, while, for the evolution of atomization spray, larger relaxation time and zero shear viscosity increased droplet Sauter mean diameter (SMD) significantly. The zero shear viscosity was effective throughout the jet region, while the effect of relaxation time became weaken at the downstream of the spray field.

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“…The interface velocity slip ratio v slip under different flow rate is expressed as [23] v slip ¼ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi r l r g ffiffiffi a p 1 þ Cð1 À aÞ s ;…”

Section: Non-newtonian Liquid Primary Atomizationmentioning

confidence: 99%

Modeling of non-Newtonian suspension plasma spraying in an inductively coupled plasma torch

Qian

Lin

Xiong

2011

International Journal of Thermal Sciences

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The Influence of Atomizing Gas Molecular Weight on Low Mass Flowrate Effervescent Atomizer Performance

Cited by 19 publications

References 8 publications

Establishment of Analytical Model for Peak Temperature Within a Sodium-Water Reaction Jet, (II) Mean Droplet Size in a Submerged Gas Jet

Establishment of Analytical Model for Peak Temperature Within a Sodium-Water Reaction Jet, (II) Mean Droplet Size in a Submerged Gas Jet

Numerical Models for Viscoelastic Liquid Atomization Spray

Modeling of non-Newtonian suspension plasma spraying in an inductively coupled plasma torch

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