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Self-exited oscillation in a combustion chambber driven by phase change in the liquid fuel feed system

Hassa, C. and Heinze, J. and Meier, U. and Heeger, Ch. and Trunk, Ph. and Dreizler, A. (2011) Self-exited oscillation in a combustion chambber driven by phase change in the liquid fuel feed system. International Journal of Spray and Combustion Dynamics, 3 (4), pp. 273-284. Sage Publications. ISSN 1756-8277

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Abstract

A new mechanism for the generation of a self-exited oscillation of combustion in a generic combustion chamber typical for aeroengine combustors is described. The cause of the oscillation is the phase change from liquid to vapour which happens when the preheat temperature of the air flowing through the burner exceeds the boiling temperature at the operating pressure and the fuel flow is so low that heat transfer to the liquid fuel causes evaporation within the fuel channels of the burner. Liquid fuel and vapour alternatively enter the airstream of the burner. This leads to an unstable situation for the flame. Measurements of chemiluminescence and liquid fuel show nearly complete extinction and re-ignition for the limit cycle. Prevention of the oscillation is possible by better thermal management of the fuel path.

Item URL in elib:https://elib.dlr.de/71808/
Document Type:Article
Title:Self-exited oscillation in a combustion chambber driven by phase change in the liquid fuel feed system
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hassa, C.Christoph.Hassa (at) DLR.DEUNSPECIFIED
Heinze, J.Johannes.Heinze (at) DLR.DEUNSPECIFIED
Meier, U.Ulrich.Meier (at) DLR.DEUNSPECIFIED
Heeger, Ch.U. DarmstadtUNSPECIFIED
Trunk, Ph.U. DarmstadtUNSPECIFIED
Dreizler, A.U. DarmstadtUNSPECIFIED
Date:2011
Journal or Publication Title:International Journal of Spray and Combustion Dynamics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:3
Page Range:pp. 273-284
Editors:
EditorsEmail
Sujith, R.I.MIT Madras
Publisher:Sage Publications
ISSN:1756-8277
Status:Published
Keywords:Combustion oscillation, phase change, liquid fuel
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems (old)
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Combustion Chamber Technologies (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine Measurement Systems
Institute of Propulsion Technology > Combustor
Deposited By: Hassa, Dr.-Ing. Christoph
Deposited On:21 Nov 2011 12:51
Last Modified:08 Mar 2018 19:02

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