4.7 Article

High-fidelity H2-CH4 jet in crossflow modelling with a flame index-controlled artificially thickened flame model

期刊

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 48, 期 90, 页码 35291-35304

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2023.05.210

关键词

Multi-regime combustion modelling; Artificially thickened flame model; Jet in crossflow flame; Hydrogen-methane combustion modelling

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This study investigates the multi-regime CH4-H-2 Jet In Crossflow (JICF) flame at gas turbine relevant conditions and predicts the change in flame morphology caused by an increase in hydrogen content using a Flame Index controlled Artificially Thickened Flame Model (ATFM). The numerical prediction shows good agreement with experimental data and provides valuable insights into flame anchoring topology.
Hydrogen introduction in existing combustion systems can heavily alter the flame morphology and stability limit of the system itself. This makes the numerical prediction of such changes crucial for the development of effective design modifications. In the industrial framework, often it is required to have combustion models capable of handling both the premixed and the diffusive combustion regimes and this represents a real modelling challenge. In this work, a multi-regime CH4-H-2 Jet In Crossflow (JICF) flame, at gas turbine relevant conditions, has been investigated with a Flame Index controlled Artificially Thickened Flame Model (ATFM). The numerical prediction shows good agreement with the detailed experimental data from DLR laboratory, and the model has been found to correctly predict the change in the flame anchoring topology due to an increase of H-2 content.(c) 2023 The Authors. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC. This is an open access article under the CC BY license (http://creativecommons.org/ licenses/by/4.0/).

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