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Large-Eddy Simulations of Fuel Effects on Gas Turbine Lean Blow-out

L. Esclapez, Center for Turbulence Research -Stanford University. P. C. Ma, R. Xu, H. Wang, and M. Ihme, Department of Mechanical Engineering, Stanford University. E. Mayhew, and T. Lee, University of Illinois at Urbana-Champaign. S. Stouffer, University of Dayton Research Institute. “Large-Eddy Simulations of Fuel Effects on Gas Turbine Lean Blow-out.” AIAA SciTech Forum, 9-13 January 2017. 55th AIAA Aerospace Sciences Meeting


Towards the implementation of alternative jet fuels in aviation gas turbines, testing in combustor rigs and engines is required to evaluate the fuel performance on combustion stability, relight, and lean-blow out (LBO) characteristics. The objective of this work is to evaluate the effect of different fuel candidates on the operability of gas turbines by comparing a conventional petroleum-based fuel with two other alternative fuel candidates. Numerical investigations are performed to examine the performance of these fuels on the stable condition close to blow-out and LBO-behavior in a referee gas turbine combustor. Large-eddy simulations (LES) are performed at stationary conditions near LBO to examine effects of the fuel properties on evaporation, gaseous-fuel deposition, ame anchoring.