Large Eddy Simulation of rich ammonia/hydrogen/air combustion in a gas turbine burner

Kevin Bioche, Laurent Bricteux, Andrea Bertolino, Alessandro Parente, Julien Blondeau

Onderzoeksoutput: Article

Samenvatting

Ammonia and hydrogen are promoted as potential energy carriers for centralized energy restitution. This article investigates ammonia/hydrogen/air premixed turbulent combustion, using Large-Eddy Simulations, in an academic atmospheric gas turbine swirled burner. A one-dimensional flame analysis demonstrates the existence of a trade-off in NOX and NH3 emissions for ammonia/hydrogen blends, and the possibility to obtain 1D flame propagation characteristics close to that of a lean methane flame by adjusting the amount of H2. Large-Eddy Simulations of the PRECCINSTA burner exhibit stable combustion, while the optimized trade-off equivalence ratio is pinpointed at φ=1.46 for XH2Fuel=0.46. Corresponding emissions are XNOX≈XNH3≈300 ppmv. Large amounts of hydrogen are found in the exhaust gases, inducing a low combustion efficiency. The flame structure, combustion dynamics, influence of kinetics modelling and mesh resolution are discussed. This work paves the way for future studies, in the perspective of applications to industrial systems.

Originele taal-2English
Pagina's (van-tot)39548-39562
Aantal pagina's15
TijdschriftInternational Journal of Hydrogen Energy
Volume46
Nummer van het tijdschrift79
DOI's
StatusPublished - 16 nov 2021

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