NDLI: Weakly Nonlinear Instability of an Annular Liquid Sheet Subjected to Unequal Inner and Outer Gas Streams

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Ashraf, A. Ibrahim Milind, A. Jog
Copyright Year	2005
Abstract	Instability and breakup of annular liquid sheet are encountered in fuel injectors used in gas turbine engines. A weakly nonlinear stability analysis has been carried out for annular liquid fuel sheet subjected to unequal inner and outer gas velocities by a perturbation expansion technique with the initial amplitude of the disturbance as the perturbation parameter. The liquid sheet is considered to move at a uniform axial velocity and is subjected to inner and outer gas streams of differing axial velocities. The breakup length is calculated, and the effect of the various flow parameters is investigated. It is found that the breakup length is reduced by an increase in the liquid velocity and the gas velocities. The inner air stream is more effective in disintegrating the sheet than the outer air stream.
Sponsorship	Power Division
Starting Page	251
Ending Page	257
Page Count	7
File Format	PDF
ISBN	0791842185
DOI	10.1115/IMECE2005-81647
e-ISBN	0791837696
Volume Number	Energy Conversion and Resources
Conference Proceedings	ASME 2005 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2005-11-05
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Gas turbines Stability Fuel injectors Fuels Flow (dynamics)
Content Type	Text
Resource Type	Article

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Weakly Nonlinear Instability of an Annular Liquid Sheet Subjected to Unequal Inner and Outer Gas Streams