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Showing 1 to 4 of 4 for “"Sealing Effectiveness"”.
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Characterization of turbine rim seal flow and its sealing effectiveness
In a gas turbine engine, ingestion of hot gas from the flowpath into the gaps between the turbine rotor and stator can lead to elevated metal temperatures and a deterioration of component life. To prevent ingestion, bleed air from the compressor is used to "purge" the rim seal cavities. …
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Large Eddy Simulation of Labyrinth Seals and Rib Shapes for Internal Cooling Passges
… a background Cartesian grid. To obtain the best sealing performance, an investigation is undertaken into the possibility of optimising labyrinth seal planforms using a genetic algorithm ( GA ). By making use of the large number of populations, a much faster calculation can be achieved toward the …
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Secondary air interaction with main flow in axial turbines
… purge ow can be negated by decreased sealing effectiveness, if ingestion is driven by the pressure non-uniformity associated with the rotor upstream in influence. However for a representative vane-rotor stage, in which the vane-induced circumferential pressure non-uniformity dominates …