Jets, wakes and separated flows : proceedings of International Conference on Jets, Wakes and Separated Flows, ICJWSF
Online ISSN : 2424-2888
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1098 Large Eddy Simulations of Methane Oxidation at Ultra-Wet Conditions in a Model Gas Turbine Combustor Applying Detailed Chemistry
Kruger OliverDuwig ChristopheTerhaar SteffenPaschereit Christian Oliver
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p. _1098-1_-_1098-6_

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The addition of steam to the combustion process is a promising avenue, in order to reduce harmful emissions and simultaneously increase the efficiency. In contrast to traditional flames where the heat release exhibits a thin flame front, operating under high levels of steam dilution leads to further distributed flames with less steep temperature gradients. It is shown that a non-diluted flame suppresses the occurrence of a helical instability present at isothermal conditions. Injecting high amounts of steam alters the flow field and the helical structure is re-established. This report is dedicated to the simulation of methane flames with high steam contents applying Large Eddy Simulations and detailed chemistry in a model gas turbine combustor. A suitable reaction scheme is identified and is then employed for the simulations of the reacting flow. For the validation of the simulations OH* chemiluminescence recordings and PIV measurements serve as a reference.
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© 2013 一般社団法人 日本機械学会
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