NDLI: CFD Modeling of the Atomization of Plain Liquid Jets in Cross Flow for Gas Turbine Applications

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Khosla, Sachin Crocker, D. Scott
Copyright Year	2004
Abstract	A numerical model for liquid jet atomization in a subsonic gas cross flow has been developed and incorporated into a CFD code. The model is designed primarily for the shear breakup regime, which is appropriate for many fuel injection applications. The model considers Weber number and momentum flux ratio ranges that are dominated by either jet surface breakup or column breakup. A boundary layer stripping model has been modified to account for both shearing from the column and shear primary breakup of large drops. Further secondary breakup was modeled with the Rayleigh-Taylor model. The effect of drop distortion on the drag is also considered. Results of the model have been compared with experimental data for jet-A liquid jets in air cross flows with varying pressure, air velocity, and liquid-to-gas momentum flux ratio. Comparisons were made for drop volume flux and drop size as a function of distance from the injector wall. Trends were captured for liquid penetration associated with varying momentum flux ratio, and for drop size as a function distance from the wall. In general, agreement between measurements and CFD predictions were quite good. Areas of disagreement could be reasonably explained by the model’s inherent inability to capture the wake flow behind the liquid column.
Sponsorship	International Gas Turbine Institute
Starting Page	797
Ending Page	806
Page Count	10
File Format	PDF
ISBN	0791841669
DOI	10.1115/GT2004-54269
e-ISBN	0791837394
Volume Number	Volume 1: Turbo Expo 2004
Conference Proceedings	ASME Turbo Expo 2004: Power for Land, Sea, and Air
Language	English
Publisher Date	2004-06-14
Publisher Place	Vienna, Austria
Access Restriction	Subscribed
Subject Keyword	Computational fluid dynamics Computer simulation Shearing (deformation) Momentum Drag (fluid dynamics) Fuels Modeling Pressure Cross-flow Gas turbines Ejectors Wakes Jets Shear (mechanics) Die cutting Boundary layers
Content Type	Text
Resource Type	Article

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