Abstract
The combustion characteristics of a model gas-turbine combustor are investigated by performing 3-D Reynolds-averaged Navier-Stokes equations (RANS) simulations of swril-stabilized lean-premixed flames of methane/air for different equivalence ratio and swirler type. Their NOX emission characteristics and thermal fatigue life are also elucidated with chemical reactor network (CRN) analysis and finite element analysis (FEA). To validate numerical models, the RANS simulations results are compared to experimental data, which shows reasonable agreement between them. The CRN analysis reveals that the amount of NOX can be reduced by low temperature and short residence time. The FEA identifies areas vulnerable to thermal fatigue. The largest strain amplitude is observed at a single nozzle exit because of large temperature variation and complicated structure. The cycles to failure at the vulnerable regions are estimated using the e-N curve of AISI type 304 stainless steel.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
