Experimental study on laser-induced ignition of swirl-stabilized kerosene flames

Klaus G. Moesi, Klaus G. Volimer, Thomas Sattelmayer, Johannes Eckstein, Herbert Kopecek

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Conventional ignition systems of aero-engines are an integral part of the combustion chamber's structure. Due to this hardware-related constraint, the ignition spark has to be generated in the quench zone of the combustion chamber which is farfrom the optimum regarding thermo- and aerodynamics. An improved ignitability of the fuel-air mixture can be found in the central zone of the combustor where higher local equivalence ratios prevail and where mixing is favorable for a smooth ignition, it would be a major advancement in aero-engine design to position the ignition kernel in these zones. A laser system is able to ignite the fuel-air mixture at almost any location inside of the combustion chamber Commercial laser systems are under development, which can replace conventional spark plugs in internal combustion engines and gas turbines. This study was conducted to evaluate the applicability of laser ignition in liquid- fueled aero-engines. ignition tests were performed with premixed natural gas and kerosene to evaluate the different approaches of laser and spark plug ignition. The experiments were carried out on a generic test rig with a well-investigated swirler allowing sufficient operationalfiexibility for parametric testing. The possibility of the free choice of the laser's focal point is the main advantage of laser- induced ignition. Placing the ignition kernel at the spray cone's shear layer or at favorable locations in the recirculation zone could significantly increase the ignitability of the system. Consequently, the laser ignition of atomized kerosene was successfully tested down to a global equivalence ratio of 0.23. Furthermore, the laser outperformed the spark plug at ignition locations below axial distances of 50 mm from the spray nozzle.

Original languageEnglish
Title of host publication2008 Proceedings of the ASME Turbo Expo
Subtitle of host publicationPower for Land, Sea, and Air
Number of pages10
EditionPART A
StatePublished - 2008
Event2008 ASME Turbo Expo - Berlin, Germany
Duration: 9 Jun 200813 Jun 2008

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART A


Conference2008 ASME Turbo Expo


Dive into the research topics of 'Experimental study on laser-induced ignition of swirl-stabilized kerosene flames'. Together they form a unique fingerprint.

Cite this