Nozzle endwall film cooling with airfoil cooling holes

摘要

A nozzle segment for a nozzle ring of a gas turbine engine is disclosed. The nozzle segment includes an upper endwall, a lower endwall, and an airfoil extending between the upper endwall and the lower endwall. The airfoil includes a pressure side wall, a plurality of inner cooling apertures, and a plurality of outer cooling apertures. The plurality of inner cooling apertures extends through a pressure side wall and is arranged in a first row adjacent the lower endwall. The plurality of outer cooling apertures extends through the pressure side wall and is arranged in a second row adjacent the upper endwall.

主权项

1. A nozzle segment for a nozzle ring of a gas turbine engine, the nozzle segment comprising:
an upper endwall; a lower endwall; and an airfoil extending between the upper endwall and the lower endwall, the airfoil including
a leading edge extending from the upper endwall to the lower endwall,a trailing edge extending from the upper endwall to the lower endwall distal to the leading edge,a pressure side wall extending from the leading edge to the trailing edge,a suction side wall extending from the leading edge to the trailing edge,a plurality of inner cooling apertures extending through the pressure side wall and arranged in a first row between the leading edge and the trailing edge adjacent the lower endwall, anda plurality of outer cooling apertures extending through the pressure side wall and arranged in a second row between the leading edge and the trailing edge adjacent the upper endwall,a plurality of showerhead cooling apertures extending through the leading edge and arranged in a first group extending between the upper endwall and the lower endwall, each showerhead cooling aperture of the plurality of showerhead cooling apertures including a showerhead compound angle from twenty to forty-five degrees, anda plurality of angles cooling apertures extending through the pressure side wall and arranged in a second group extending between the plurality of inner cooling apertures and the plurality of outer cooling apertures, each angled cooling aperture of the plurality of angled cooling apertures including a compound angle from fifteen to forty-five degreeswherein the plurality of showerhead cooling apertures and the plurality of angled cooling apertures alternate in directionality such that the showerhead compound angle and the compound angle are in opposite radial directions.