Abstract
An experimental study was performed in a simplified turbine disk cavity consisting of a single disk rotating near a stationary flat plate, bounded radially by an axial seal fixed to the plate. The disk Reynolds number was 6.2 × 105. Cooling flow was supplied axially at a dimensionless radius of 0.33. Flow visualization showed boundary layers on both the rotating and stationary disks with the core between the layers rotating in solid body motion. At intermediate cooling flow rates, large vortical structures aligned with the disk spin axis and spanning the core were observed.
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