| 摘要 |
An aerofoil (39) for a gas turbine engine (10) includes one or more internal cooling passage (74, 76) for receiving a flow of cooling fluid, and means (84, 86, 88, 90) for inducing at least two vortices in cooling fluid flowing through each cooling passage. Fluid within the vortices has a radially outwards, screw-type motion. The two vortices produce effective cooling of the aerofoil, which may be an aerofoil of a turbine blade.
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