Heat transfer pedestals with flow guide features
A turbomachine component includes a body defining an interior cooling channel in fluid communication with the exterior of the body for fluid communication with a cooling flow source. At least one flow modifying pedestal is disposed within the interior cooling channel extending in a first direction. The flow modifying pedestal includes at least one flow feature that extends from the pedestal in a second direction.
1. A turbomachine component, comprising:
a body, wherein the body defines an interior cooling channel in fluid communication with an exterior of the body for fluid communication with a cooling flow source, the body having a first inner surface and a second inner surface that define a portion of the interior cooling channel;
at least one flow modifying pedestal disposed within the interior cooling channel extending in a first direction across the cooling channel between the two inner surfaces; and
a first flow feature on a first side of the at least one flow modifying pedestal that extends from the pedestal in a second direction, the first flow feature configured to direct a flow of air toward the first inner surface, and
a second flow feature on a second side of the at least one flow modifying pedestal that extends in the second direction, opposite the direction of the first flow feature, the second flow feature configured to direct a flow of air toward the second inner surface,
wherein the at least one flow modifying pedestal, the first flow feature, and the second flow feature are configured to push a cooling flow of air toward the first and second inner surfaces.
2. The component of claim 1 , wherein at least one of the first flow feature and the second flow feature includes a flow guide angled to guide flow within the channel toward a respective inner surface.
3. The component of claim 1 , wherein each flow feature includes a flow guide angled to guide flow within the channel toward the respective inner surfaces.
4. The component of claim 1 , wherein each flow feature is a turbulence feature extending into a flow path to mix the cooling flow within the interior channel.
5. The component of claim 1 , wherein the first and second directions are perpendicular or angled to each other.
6. The component of claim 5 , wherein each flow feature has a ramp shape in cross-section.
7. The component of claim 5 , wherein each flow feature has a diamond shape in cross section.
8. The component of claim 5 , wherein each flow feature has a cylindrical or elliptical shape in cross-section.
9. The component of claim 5 , wherein each flow modifying pedestal includes a plurality of first flow features on the first side and a plurality of second flow features on the second side.
10. The component of claim 1 , wherein the flow modifying pedestals have a rounded diamond cross-sectional shape.
11. The component of claim 1 , wherein the flow modifying pedestals have a cylindrical or elliptical cross-sectional shape.
12. A method of manufacturing a turbomachine component, comprising:
forming at least one flow modifying pedestal within an interior cooling channel of a turbomachine component, each flow modifying pedestal disposed extending in a first direction within the channel, each flow modifying pedestal extending across the cooling channel between a first inner surface and a second inner surface of the component that define the interior cooling channel; and
forming a first flow feature on a first side of each flow modifying pedestal and a second flow feature on a second side of each flow modifying pedestal, wherein the first flow feature extends from the first side of a respective pedestal in a second direction and the second flow feature extends from the second side of the respective pedestal in the second direction, opposite the direction of the first flow feature; wherein forming includes forming at least one of the first flow feature and the second flow feature such that it includes a flow guide to guide flow within the channel toward the respective inner surface.
13. The method of claim 12 , wherein forming includes forming each flow feature such that it includes a flow guide to guide flow within the channel toward the respective inner surfaces.
14. The method of claim 12 , wherein forming includes forming each flow feature as a turbulence feature to mix the cooling flow within the interior channel.
15. The method of claim 12 , wherein forming includes forming each flow feature such that the second direction is perpendicular or angled to the first direction.
16. The method of claim 15 , wherein forming includes forming each flow feature such that it has a ramp shape in cross-section.
17. The method of claim 15 , wherein forming includes forming each flow feature such that it has a diamond shape in cross-section.
18. The method of claim 15 , wherein forming includes forming each flow feature such that it has a cylindrical or elliptical shape in cross-section.
19. The method of claim 12 , wherein forming includes additive manufacturing, casting, laser cutting, and/or electrical discharge machining.