Presentation on theme: "Parametric Study of Ejector-Cooled Turbine Engine Compartment Using CFD Mike Kazlauskas 12-3-2009."— Presentation transcript:
Parametric Study of Ejector-Cooled Turbine Engine Compartment Using CFD Mike Kazlauskas 12-3-2009
Overview Modeling turbine engine compartment using CFD Uses ejector arrangement for compartment cooling- High speed, primary flow entrains secondary flow Runs will be 2D, axisymmetric. Profile of compartment is created and virtually revolved around centerline Trying to determine effects of compartment cooling flow and exhaust loss on cooling inlet size, ejector gap size, and primary nozzle velocity
Conclusions Smallest primary nozzle with large mixing duct produced highest overall secondary flow, however exhaust loss was twice as high as other configurations Constant area primary nozzle with large mixing duct produced relatively high secondary flow with significantly lower losses than small nozzle configuration Configurations with inadequate ejector gap area are limited to the maximum amount of secondary flow regardless of complartment cooling inlet area
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