Fuel atomization in a flowing airstream (for turbofan engines)

Rao, KVL and Lefebvre, AH (1975) Fuel atomization in a flowing airstream (for turbofan engines). AIAA Journal, Vol.13 . pp. 1413-1415. ISSN 0001-1452

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    Abstract

    Since in some modern turbofan engines the primary zone velocity is high enough to affect appreciably the mean drop size of fuel injected through a swirl atomizer, an experiment was designed to obtain accurate data on the influence of the velocity of an airstream on the mean drop size and size distribution of fuel drops injected into it. Kerosene fuel was sprayed in the direction of an airstream in a test section; drop sizes were measured by a light-scattering technique while drop size distribution was measured with a probe in which liquid nitrogen froze the fuel drops, which were then collected in a nitrogen-cooled perspex pot and photographed through a microscope. Results indicated that atomization quality is improved by increases in fuel injection pressure and reduction in atomizer flow number, and also demonstrated that an increase in air velocity reduces the mean drop size.

    Item Type: Journal Article
    Additional Information: Copyright for this article belongs to AIAA
    Uncontrolled Keywords: Air flow;Drop size;Flow velocity;Fuel sprays;Turbofan engines;Atomizing;Fuel injection;Kerosene;Light scattering meters;Liquid nitrogen;Praticle size distribution;Swirling
    Subjects: ENGINEERING > Engineering (General)
    Division/Department: Propulsion Division, Other
    Depositing User: M/S ICAST NAL
    Date Deposited: 03 Mar 2010
    Last Modified: 24 May 2010 09:54
    URI: http://nal-ir.nal.res.in/id/eprint/3775

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