Combustor dilution with vortex generating turbulators

1 . A combustor for a gas turbine, the combustor comprising:

a combustor liner having a cold surface side and a hot surface side;

a combustion chamber arranged on the hot surface side of the combustor liner;

a vortex turbulence generator arranged on the combustor liner, the vortex turbulence generator comprising:

a turbulence generator flow passage extending through the combustor liner from the cold surface side of the combustor liner to the hot surface side of the combustor liner, the turbulence generator flow passage being defined by a turbulence generator wall about a periphery of the turbulence generator flow passage, the turbulence generator wall extending between the cold surface side and the hot surface side; and

a plurality of vortex generating turbulators disposed on the turbulence generator wall, each of the plurality of vortex generating turbulators including a projection portion extending from a surface of the turbulence generator wall into the turbulence generator flow passage and generating a vortex turbulent flow of an oxidizer passing through the turbulence generator flow passage from the cold surface side of the combustor liner to the hot surface side of the combustor liner,

wherein the vortex turbulence generator further comprises a main jet, the main jet comprising a jet wall having a main jet flow passage therethrough, the jet wall having a jet wall inner surface that defines the main jet flow passage, and a jet wall outer surface, wherein the main jet extends from the cold surface side of the combustor liner to the hot surface side of the combustor liner,

wherein the main jet is disposed within the turbulence generator flow passage with a gap between the turbulence generator wall and the jet wall outer surface,

wherein the vortex turbulence generator further comprises a plurality of ribs extending from the turbulence generator wall to the jet wall and radially from at least one of the cold surface side of the combustor liner or the hot surface side of the combustor liner to support the jet wall, each of the plurality of ribs having a side coplanar with at least one of the cold surface side of the combustor liner or the hot surface side of the combustor liner, and

wherein at least one of the plurality of vortex generating turbulators is pyramidal shaped and includes a primary flow interface surface having a plurality of triangular shaped surfaces, a base of each of the plurality of triangular shaped surfaces extending across an upstream side of the respective triangular shaped surface with regard to a flow direction of the oxidizer passing through the turbulence generator flow passage, and an apex of each of the plurality of triangular shaped surfaces being downstream of the base with regard to the flow direction.

2 . The combustor according to claim 1 , wherein at least a portion of the turbulence generator wall is a conical surface, a major diameter of the conical surface being disposed toward the cold surface side of the combustor liner and a minor diameter of the conical surface being disposed toward the hot surface side of the combustor liner.

3 . The combustor according to claim 1 , wherein the plurality of vortex generating turbulators comprises a plurality of rows of vortex generating turbulators disposed on the turbulence generator wall, a first row among the plurality of rows of vortex generating turbulators being disposed adjacent to the cold surface side of the combustor liner and a second row of the plurality of rows of vortex generating turbulators being disposed adjacent to the hot surface side of the combustor liner.

4 . The combustor according to claim 3 , wherein vortex generating turbulators in the first row are rotationally staggered on the turbulence generator wall about a center axis of the turbulence generator flow passage with respect to vortex generating turbulators in the second row.

5 . The combustor according to claim 1 , further comprising a plurality of vortex generating turbulators disposed on the jet wall outer surface and extending into the gap.

6 . The combustor according to claim 1 , wherein the turbulence generator wall, the jet wall inner surface, and the jet wall outer surface each comprise a conical surface in radial arrangement with one another, a major diameter portion of each conical surface being disposed at the cold surface side of the combustor liner and a minor diameter portion of each conical surface being disposed at the hot surface side of the combustor liner.

7 . The combustor according to claim 1 , wherein the main jet provides a non-turbulent flow of the oxidizer into the combustion chamber, and

wherein the vortex turbulence generator provides the vortex turbulent flow of the oxidizer into the combustion chamber, the vortex turbulent flow surrounding the non-turbulent flow at the hot surface side of the combustor liner.

8 . The combustor according to claim 1 , wherein the turbulence generator wall comprises a first portion that is concentric with the main jet, the first portion being on an upstream side of the vortex turbulence generator, and a second portion that is non-concentric with the main jet, the second portion being on a downstream side of the vortex turbulence generator and having a larger radius than the first portion.

9 . The combustor according to claim 8 , wherein the plurality of vortex generating turbulators disposed on the turbulence generator wall are disposed on the second portion and are not disposed on the first portion.

10 . The combustor according to claim 1 , further comprising a plurality of vortex generating turbulators disposed on the jet wall inner surface.

11 . A dilution vortex turbulence generator for a combustor of a gas turbine, the dilution vortex turbulence generator comprising:

a base body having a cold surface side and a hot surface side;

a turbulence generator flow passage extending through the base body from the cold surface side to the hot surface side, the turbulence generator flow passage being defined by a turbulence generator wall about a periphery of the turbulence generator flow passage, the turbulence generator wall extends between the cold surface side and the hot surface side; and

a plurality of vortex generating turbulators disposed on the turbulence generator wall, each of the plurality of vortex generating turbulators including a projection portion extending from a surface of the turbulence generator wall into the turbulence generator flow passage and generating a vortex turbulent flow of an oxidizer passing through the turbulence generator flow passage from the cold surface side of the base body to the hot surface side of the base body, and

further comprising a main jet, the main jet comprising a jet wall having a main jet flow passage therethrough, the jet wall having a jet wall inner surface that defines the main jet flow passage, and a jet wall outer surface,

wherein the main jet extends from the cold surface side of the base body to the hot surface side of the base body,

wherein the main jet is disposed within the turbulence generator flow passage with a gap between the turbulence generator wall and the jet wall outer surface,

wherein the dilution vortex turbulence generator further comprises a plurality of ribs extending from the turbulence generator wall to the jet wall and radially from at least one of the cold surface side of the base body or the hot surface side of the base body to support the jet wall, each of the plurality of ribs having a side coplanar with at least one of the cold surface side of the base body or the hot surface side of the base body, and

wherein at least one of the plurality of vortex generating turbulators is pyramidal shaped and includes a primary flow interface surface having a plurality of triangular shaped surfaces, a base of each of the plurality of triangular shaped surfaces extending across an upstream side of the respective triangular shaped surface with regard to a flow direction of the oxidizer passing through the turbulence generator flow passage, and an apex of each of the plurality of triangular shaped surfaces being downstream of the base with regard to the flow direction.

12 . The dilution vortex turbulence generator according to claim 11 , wherein at least a portion of the turbulence generator wall is a conical surface, a major diameter of the conical surface being disposed toward the cold surface side of the base body and a minor diameter of the conical surface being disposed toward the hot surface side of the base body.

13 . The dilution vortex turbulence generator according to claim 11 , wherein the plurality of vortex generating turbulators comprises a plurality of rows of vortex generating turbulators disposed on the turbulence generator wall, a first row among the plurality of rows of vortex generating turbulators being disposed adjacent to the cold surface side of the base body and a second row of the plurality of rows of vortex generating turbulators being disposed adjacent to the hot surface side of the base body.

14 . The dilution vortex turbulence generator according to claim 13 , wherein vortex generating turbulators in the first row are rotationally staggered on the turbulence generator wall about a center axis of the turbulence generator flow passage with respect to vortex generating turbulators in the second row.

15 . The dilution vortex turbulence generator according to claim 11 , further comprising a plurality of vortex generating turbulators disposed on the jet wall outer surface and extending into the gap.