A numerical study of NOx reduction by water spray injection in gas turbine combustion chambers

A numerical study of NOx reduction by water spray injection in gas turbine combustion chambers 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Fuel Elsevier

A numerical study of NOx reduction by water spray injection in gas turbine combustion chambers

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0016-2361
D.O.I.
10.1016/j.fuel.2017.10.033
Publisher site
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Abstract

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

Journal

FuelElsevier

Published: Jan 15, 2018

References

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