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Spray dispersion in a counter-swirling double-annular airflow at gas turbine conditions

Becker, J. and Heitz, D. and Hassa, C. (2004) Spray dispersion in a counter-swirling double-annular airflow at gas turbine conditions. Atomization and Sprays, 14 (1), pp. 15-35.

Full text not available from this repository.

Abstract

The dispersion of a kerosene fuel spray generated by plain-jet-in-crossflow injection into the inner annulus of a counter-swirling double-annular airflow was investigated experimentally. Tests were conducted at 6 bar and 12 bar static air pressure and 750 K air temperature and at the corresponding cold test conditions in terms of air density, with an additional excursion to higher air density (9.3 bar at 290 K). The airflow was characterized by Laser-Doppler-Anemometry (LDA) and the spray dispersion was investigated by Phase-Doppler-Anemometry (PDA). It was found that the very small droplets generated at high pressure have such a great ability to follow the streamlines of the airflow that they remain trapped in the inner annulus, preventing the formation of a uniform fuel-air mixture in the annular flow. For an in-depth discussion of the results, the appropriate versions of the Stokes number are introduced and evaluated.

Item URL in elib:https://elib.dlr.de/1191/
Document Type:Article
Additional Information: LIDO-Berichtsjahr=2004,
Title:Spray dispersion in a counter-swirling double-annular airflow at gas turbine conditions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Becker, J.UNSPECIFIEDUNSPECIFIED
Heitz, D.UNSPECIFIEDUNSPECIFIED
Hassa, C.UNSPECIFIEDUNSPECIFIED
Date:2004
Journal or Publication Title:Atomization and Sprays
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:14
Page Range:pp. 15-35
Status:Published
Keywords:spray, dispersion, mixing, two-phase flow, combustion, gas turbine
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L TT - Triebwerkstechnologien
DLR - Research theme (Project):L - Combustion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology
Deposited By: DLR-Beauftragter, elib
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 13:25

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