In combustor design for aero-engines, engineers face multiple opposing objectives with strict constraints. The trend toward lean direct injection (LDI) combustors suggests a growing emphasis on injector design to balance these objectives. Decades of empirical and analytical work have produced low-order methods, including semi-empirical and semi-analytical correlations and models of combustors and their components, but detailed modeling of injector and combustor behavior requires computational fluid dynamics (CFD). In this study, an application of low-order methods and published guidelines yielded generic injector and combustor geometries, as well as CFD boundary conditions of parameterized injector designs. Moreover, semi-empirical correlations combined with a numerical spray combustion solver provided injector design evaluations in terms of pattern factor, thermoacoustic performance, and certain emissions. Automation and parallel coordinate visualization enabled exploration of the dual-swirler airblast injector design space, which is often neglected in published combustor design studies.
Multi-objective Numerical Investigation of a Generic Airblast Injector Design
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received August 29, 2015; final manuscript received January 28, 2016; published online March 22, 2016. Assoc. Editor: Joseph Zelina. This work is in part a work of the U.S. Government. ASME disclaims all interest in the U.S. Government's contributions.
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Comer, A. L., Kipouros, T., and Stewart Cant, R. (March 22, 2016). "Multi-objective Numerical Investigation of a Generic Airblast Injector Design." ASME. J. Eng. Gas Turbines Power. September 2016; 138(9): 091501. https://doi.org/10.1115/1.4032737
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