Heat transfer over rotor surface in a pre-swirl rotating-disc system.(Technical report)

From: International Journal of Dynamics of Fluids | Date: June 1, 2007| Author: | Copyright information

Abstract

Pre-swirl is often used in the internal cooling-air systems of gas turbines to reduce the temperature of the cooling air relative to the rotating turbine blades. In a "direct-transfer" system, the air passes axially across the wheel-space from stationary pre-swirl nozzles to receiver holes in the rotating turbine disc. This paper investigates heat transfer over rotating disc of such a system, using a 3D steady, incompressible turbulent flow in rotating frame of reference. Computed results are compared with measurements of static and total pressure coefficients and ...

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