Ammonia Hydrogen Ignition Measurements for Clean Aircraft Propulsion

Baker, Jessica; Khaleel Rahman, Ramees; Ninnemann, Erik M.; Vasu, Subith

doi:10.2514/6.2022-0817

Ammonia Hydrogen Ignition Measurements for Clean Aircraft Propulsion

Conference · 28 December 2022 · AIAA SCITECH 2022 Forum

DOI:https://doi.org/10.2514/6.2022-0817· OSTI ID:2406157

Baker, Jessica ^[1]; Khaleel Rahman, Ramees ^[2]; Ninnemann, Erik M. ^[2]; Vasu, Subith ^[2]

University of Central Florida College of Engineering and Computer Science; University of Central Florida
University of Central Florida College of Engineering and Computer Science

In the current study, the oxidation of ammonia with hydrogen as well as ammonia with Natural Gas was carried out in order to study the ignition delay times behind reflected shock waves to refine chemical kinetic models. Experiments were carried out in the University of Central Florida’s shock tube facility by utilizing chemiluminescence to obtain OH* emission. Experimental results were then compared with the mainstay GRI 3.0 mechanism, as well as the proprietary UCF 2022 mechanism. Results indicate that for hydrogen/ammonia mixtures, GRI 3.0 overpredicts experimental values while UCF 2022 aligns well at low temperatures but shows variance at high temperature conditions. For hydrogen/Natural Gas mixtures, neither mechanism is able to accurately predict the experimental ignition delay times. The UCF 2022 mechanism is currently being adjusted based on a sensitivity study that was carried out and the experimental results so that it will be able to capture the ignition behavior of hydrogen-carrying compounds during combustion. Experiments are currently being planned in order to extend the pressure and temperature range.

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Research Organization:: University of Central Florida

Sponsoring Organization:: USDOE; USDOE Office of Fossil Energy (FE), Office of Clean Energy Systems (FE-22)

DOE Contract Number:: FE0032072

OSTI ID:: 2406157

Journal Information:: AIAA SCITECH 2022 Forum, Journal Name: AIAA SCITECH 2022 Forum

Country of Publication:: United States

Language:: English

References (13)

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