Turbine engine with a blade
A turbine engine includes an engine core extending along an engine centerline and includes a compressor section, a combustor, and a turbine section in serial flow arrangement. One or more blades in the compressor or turbine sections has an internal cooling conduit with at least one of a bend or a terminal end. A plurality of cooling holes are provided in the blade, with each hole having an inlet fluidly coupled to the cooling conduit and an outlet opening onto an exterior of the blade.
1. A blade for a turbine engine, comprising:
an outer wall bounding an interior and having an exterior surface, with the outer wall defining a pressure side and a suction side and extending between a leading edge and a trailing edge to define a chord-wise direction, and also extending between a tip and a root to define a span-wise direction, with the tip forming a radially outermost surface of the outer wall;
a serpentine cooling conduit within the interior, the serpentine cooling conduit having at least one of a turn or a terminal end; and
a plurality of film holes comprising a corresponding plurality of passages extending between a corresponding plurality of inlets and a corresponding plurality of outlets, with the plurality of inlets provided at and fluidly coupled to the at least one of the turn or the terminal end and the plurality of outlets located on the exterior surface;
wherein the plurality of outlets comprises a group of outlets arranged as a first subset of outlets at least partially extending along the chord-wise direction, and a second subset of outlets extending at least partially along the span-wise direction and wherein the first subset of outlets has a span intersecting at least a portion of a chord of the second subset of outlets or the second subset of outlets has a chord and intersecting at least a portion of a span the first subset of outlets.
2. The blade of claim 1 , wherein the serpentine cooling conduit comprises multiple turns or terminal ends and further comprising multiple groups of outlets, with each group of the multiple groups of outlets corresponding to a different one of the turns or terminal ends.
3. The blade of claim 2 , wherein the multiple groups of outlets comprise multiple geometric profiles spaced chord-wise along the outer wall.
4. The blade of claim 3 , wherein the multiple groups of outlets define the same geometric profile.
5. The blade of claim 4 , wherein the geometric profile is an L-shape.
6. The blade of claim 2 , wherein the multiple groups of outlets collectively define an undulating profile.
7. The blade of claim 6 , wherein the undulating profile defines a plurality of peaks and valleys.
8. The blade of claim 1 , further comprising a span-wise length defined along the outer wall from the tip to the root, wherein the first subset of outlets is spaced from the tip between 0-10% of the span-wise length.
9. The blade of claim 1 , further comprising:
an average passage width defined for the plurality of passages; and
a plurality of spacing distances defined between corresponding pairs of adjacent passages in the plurality of passages;
wherein each spacing distance in the plurality of spacing distances is between 1-7 times the average passage width.
10. The blade of claim 1 , wherein the at least one of the turn or the terminal end defines an edge, the group of outlets define a geometric profile, and the geometric profile follows the edge.
11. A blade for a turbine engine, comprising:
an outer wall bounding an interior and having an exterior surface, with the outer wall defining a pressure side and a suction side and extending between a leading edge and a trailing edge to define a chord-wise direction, and also extending between a tip and a root to define a span-wise direction, with the tip forming a radially outermost surface of the outer wall;
multiple cooling conduits within the interior, with at least two of the multiple cooling conduits having a terminal end; and
a plurality of film holes arranged in groups, with each group of film holes corresponding to a different one of the multiple cooling conduits, and each group of film holes comprising a corresponding plurality of passages extending between a corresponding plurality of inlets and a corresponding plurality of outlets, with the plurality of inlets provided at and fluidly coupled to the corresponding terminal end and the plurality of outlets located on the exterior surface;
wherein the plurality of outlets for each group of film holes comprises a group of outlets arranged as a first subset of outlets at least partially extending along the chord-wise direction and wherein the first subset of outlets is within 0-10% of a span-wise length, and a second subset of outlets extending at least partially along the span-wise direction and wherein at least a portion of the second subset of outlets intersect the first subset of outlets within the 0-10% of the span-wise length.
12. The blade of claim 11 , wherein the multiple groups of outlets comprise multiple geometric profiles.
13. The blade of claim 12 wherein the multiple geometric profiles are spaced chord-wise along the outer wall.
14. The blade of claim 12 , wherein the multiple groups of outlets define the same geometric profile.
15. The blade of claim 14 , wherein the geometric profile is an L-shape.
16. The blade of claim 11 , wherein the multiple groups of outlets define an undulating profile.
17. The blade of claim 16 , wherein the undulating profile defines a plurality of peaks and valleys.
18. The blade of claim 11 , further comprising:
an average passage width defined for the plurality of passages; and
a plurality of spacing distances defined between corresponding pairs of adjacent passages in the plurality of passages;
wherein each spacing distance in the plurality of spacing distances is between 1-7 times the average passage width.
19. The blade of claim 11 , wherein at least one of a turn or the terminal end defines an edge, the group of outlets define a geometric profile, and the geometric profile follows the edge.
20. A blade for a turbine engine, comprising:
an outer wall bounding an interior and having an exterior surface, with the outer wall defining a pressure side and a suction side and extending between a leading edge and a trailing edge to define a chord-wise direction, and also extending between a tip and a root to define a span-wise direction, with the tip forming a radially outermost surface of the outer wall;
multiple cooling conduits within the interior, with at least two of the multiple cooling conduits having a terminal end; and
a plurality of film holes arranged in groups, wherein the groups comprise repeating patterns of groups arranged chord-wise, with each group of film holes corresponding to a different one of the multiple cooling conduits, and each group of film holes comprising a corresponding plurality of passages extending between a corresponding plurality of inlets and a corresponding plurality of outlets, with the plurality of inlets provided at and fluidly coupled to the corresponding terminal end and the plurality of outlets located on the exterior surface;
wherein the plurality of outlets for each group of film holes comprises a group of outlets arranged as a first subset of outlets at least partially extending along the chord-wise direction and a second subset of outlets extending at least partially along the span-wise direction and intersecting the first subset of outlets.