NDLI: Mixing characteristics of pulsed air-assist liquid jet into an internal subsonic cross-flow

Content Provider	Springer Nature Link
Author	Lee, Inchul Kang, Youngsu Koo, Jaye
Copyright Year	2010
Abstract	Penetration depth, spray dispersion angle, droplet sizes in breakup processes and atomization processes are very important parameters in combustor of air-breathing engine. These processes will enhance air/fuel mixing inside the combustor. Experimental results from the pulsed air-assist liquid jet injected into a cross-flow are investigated. And experiments were conducted to a range of cross-flow velocities from 42∼136 m/s. Air is injected with 0∼300kPa, with air-assist pulsation frequency of 0∼20Hz. Pulsation frequency was modulated by solenoid valve. Phase Doppler Particle Analyzer(PDPA) was utilized to quantitatively measuring droplet characteristics. High-speed CCD camera was used to obtain injected spray structure. Pulsed air-assist liquid jet will offer rapid mixing and good liquid jet penetration. Air-assist makes a very fine droplet which generated mist-like spray. Pulsed air-assist liquid jet will introduce additional supplementary turbulent mixing and control of penetration depth into a cross-flow field. The results show that pulsation frequency has an effect on penetration, transverse velocities and droplet sizes. The experimental data generated in these studies are used for a development of active control strategies to optimize the liquid jet penetration in subsonic cross-flow conditions and predict combustion low frequency instability.
Starting Page	136
Ending Page	140
Page Count	5
File Format	PDF
ISSN	10032169
Journal	Journal of Thermal Science
Volume Number	19
Issue Number	2
e-ISSN	1993033X
Language	English
Publisher	SP Science Press
Publisher Date	2010-06-05
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	cross-flow penetration pulsed air-assist liquid jet pulsation frequency Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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Mixing characteristics of pulsed air-assist liquid jet into an internal subsonic cross-flow

Flow visualization of vortex structure in a pulsed rectangular jet

Quantification of liquid mixing enhanced by alternatively pulsed injection in a confined jet configuration

Flow and heat transfer characteristics of circular impinging jet accompanying annular suction flow

Effects of pulsation on separated flow and heat transfer in enlarged channel

Visualization of circular subsonic jet flow by DNS

Synchronal measurement of flow structure and heat transfer of impingement jet

Heat transfer optimization for air-mist cooling between a stack of parallel plates

Correlation analysis of transient heat transfer characteristics for air precooling aggregate

Mixing characteristics of pulsed air-assist liquid jet into an internal subsonic cross-flow

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