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978-3-8439-2737-6, Reihe Energietechnik

Georg Tautschnig
Auto-Ignition and Combustion of Fuel Jets in Vitiated Co-Flow at Elevated Pressure

148 Seiten, Dissertation Technische Universität München (2016), Softcover, A5

Zusammenfassung / Abstract

Sequential staged combustion with an expansion turbine between both stages is an efficient way of extending the low emission regime of gas turbines towards very low loads. The dominating combustion regime in the second stage is auto-ignition. A generic pressurized staged combustion experiment is presented whereon optical measurement techniques are applied to the second combustion stage. Lift-off height and air excess ratio of the flame in the ignition region are determined. In order to measure air excess ratios in the second stage, influences of vitiated conditions on chemiluminescence are investigated. Tendencies observed in the experiments are simulated successfully.