Second Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP2
FLOW DYNAMICS IN A SWIRLING JET COMBUSTOR
pages 333-338
DOI: 10.1615/TSFP2.2190
RÉSUMÉ
A hybrid simulation approach is used to investigate the flow patterns in an axisymmetric swirl combustor configuration. Effective inlet boundary conditions are based on velocity data from RANS or actual laboratory measurements at the outlet of a fuel-injector nozzle, and LES is used to study the unsteady non-reactive flow dynamics within the combustor. Case studies ranging from single-swirler to more complex multi-swirler nozzles are presented to emphasize the importance of initial inlet conditions on the behavior of the swirling flow entering a sudden expansion area, including swirl and radial numbers, inlet length, and characteristic velocity profiles.