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Atomization and Sprays
インパクトファクター: 1.262 5年インパクトファクター: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN 印刷: 1044-5110
ISSN オンライン: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v1.i3.10
pages 239-252

EFFERVESCENT ATOMIZATION OF HIGH-VISCOSITY FLUIDS: PART I. NEWTONIAN LIQUIDS

Harry N. Buckner
Thermal Sciences and Propulsion Center, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907
Paul E. Sojka
Maurice J. Zucrow Laboratories (formerly Thermal Sciences and Propulsion Center), School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, 47907-2014, USA

要約

The performance of a new type of fuel-injection nozzle that is capable of producing fine sprays when atomizing high-viscosity Newtonian fluids allow air-liquid ratios is reported. The nozzle, termed an effervescent atomizer, is a form of twin-fluid injector that operates by forming a well-mixed two-phase flow within the nozzle body. Shadow photographs show that atomization is accomplished via rapid expansion of gas bubbles after they exit the nozzle. Particle size measurements demonstrate that mean droplet diameters of 25 μm can be obtained for fluids with viscosities ranging from 400 to 968 cP at an air-liquid ratio of 0.15. Particle size measurements also indicate that mean droplet diameter is a strong function of air-liquid ratio while being nearly independent of liquid viscosity, fluid supply pressure, and mixture mass flow rate over the range of conditions tested.


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