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Automated design space exploration of the hydrogen fueled "Micromix" combustor technology

  • Combined with the use of renewable energy sources for its production, Hydrogen represents a possible alternative gas turbine fuel for future low emission power generation. Due to its different physical properties compared to other fuels such as natural gas, well established gas turbine combustion systems cannot be directly applied for Dry Low NOx (DLN) Hydrogen combustion. This makes the development of new combustion technologies an essential and challenging task for the future of hydrogen fueled gas turbines. The newly developed and successfully tested “DLN Micromix” combustion technology offers a great potential to burn hydrogen in gas turbines at very low NOx emissions. Aiming to further develop an existing burner design in terms of increased energy density, a redesign is required in order to stabilise the flames at higher mass flows and to maintain low emission levels. For this purpose, a systematic design exploration has been carried out with the support of CFD and optimisation tools to identify the interactions of geometrical and design parameters on the combustor performance. Aerodynamic effects as well as flame and emission formation are observed and understood time- and cost-efficiently. Correlations between single geometric values, the pressure drop of the burner and NOx production have been identified as a result. This numeric methodology helps to reduce the effort of manufacturing and testing to few designs for single validation campaigns, in order to confirm the flame stability and NOx emissions in a wider operating condition field.

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Author:Anis Haj Ayed, Constantin J. D. Striegan, Karsten Kusterer, Harald H.-W. FunkeORCiD, M. Kazari, Atsushi Horikawa, Kunio Okada
Document Type:Conference Proceeding
Year of Completion:2017
Date of the Publication (Server):2021/02/15
First Page:1
Last Page:8
Proceedings of the 1st Global Power and Propulsion Forum
GPPF 2017, Jan 16-18, 2017, Zurich, Switzerland
Institutes:FH Aachen / Fachbereich Luft- und Raumfahrttechnik
Licence (German):License LogoCreative Commons - Namensnennung-Nicht kommerziell