| 主权项 |
1. A rotating machine cooled by a cooling medium directed through the rotating machine in a main flow and a secondary flow, the rotating machine comprising:
a rotor; a stator including a swirl passage configured to guide the secondary flow so as to be discharged from a pre-swirl nozzle; and at least one control device including a shape-memory alloy disposed in an area of the pre-swirl nozzle and configured to control the secondary flow based on a temperature in an automated manner, wherein the swirl passage includes a swirl vane disposed in the area of the pre-swirl nozzle, wherein the at least one control device is configured to alter a flow cross-section of the swirl passage in an area of the swirl vane based on the temperature, and wherein each of the at least one control device includes a curved membrane having the shape-memory alloy projecting into the swirl passage, a curvature of the curved membrane being adjustable so as to alter the flow cross section of the swirl passage. |
