Fuel 212 (2018) 173–186 Contents lists available at ScienceDirect Fuel journal homepage: www.elsevier.com/locate/fuel Full Length Article A numerical study of NOx reduction by water spray injection in gas turbine combustion chambers A. Farokhipour, E. Hamidpour, E. Amani Mechanical Engineering Dept., Amirkabir University of Technology, Tehran, Iran GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: An Eulerian-Lagrangian model is implemented to study the process of water spray injection inside gas turbine Gas turbine combustors. The validation of diﬀerent parts of the model and the examination of the uncertainties introduced Combustor by diﬀerent assumptions in this model are presented and discussed carefully. Then, the model is used to in- NOx reduction vestigate the eﬀect of diﬀerent injection parameters; including position, direction, and mass ﬂow rate, on the Water spray performance and emission of a gas turbine combustor at diﬀerent swirl numbers. The results show that the Eulerian-Lagrangian interaction between spray droplets and the ﬂow structures inside the liner plays the key role in the eﬀectiveness of the injection process. The spray should be injected such that droplets are not trapped in the internal re- circulating zone (IRZ) since they are pushed towards the colder ﬂow near the liner walls. On
Fuel – Elsevier
Published: Jan 15, 2018
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