Trailing edge or tip flag antiflow separation

摘要

An airfoil includes a leading edge, a trailing edge region, a suction surface, a pressure surface, a cooling passageway, and a column of flow separators. The suction surface and the pressure surface both extend axially between the leading edge and the trailing edge region, as well as radially from a root section of the airfoil to a tip section of the airfoil to define a central cavity of the airfoil. The cooling passageway is located within the central cavity at the trailing edge region. The column of flow separators is located in the cooling passageway adjacent the trailing edge and includes a first flow separator having a first longitudinal axis and a second flow separator having a second longitudinal axis. The first longitudinal axis is offset at an angle with respect to the first longitudinal axis.

主权项

1. An airfoil comprising:
a leading edge and a trailing edge region, the trailing edge region located axially downstream from the leading edge and terminating in a trailing edge; a suction surface and a pressure surface, the suction surface and the pressure surface both extending axially between the leading edge and the trailing edge region, as well as radially from a root section of the airfoil to a tip section of the airfoil to define a central cavity of the airfoil; a cooling passageway located within the central cavity at the trailing edge region; and a column of flow separators located in the cooling passageway adjacent the trailing edge, the column of flow separators comprising:
a first flow separator having a first longitudinal axis;a second flow separator having a second longitudinal axis, wherein the first longitudinal axis is offset at an angle between 1 and 15 degrees with respect to the second longitudinal axis;a third flow separator having a third longitudinal axis, wherein the second longitudinal axis and the third longitudinal axis are substantially parallel to one another;a first cooling slot located between the first flow separator and the tip section, wherein the first cooling slot has a diffusion angle less than 20 degrees;a second cooling slot located between the second flow separator and the first flow separator, wherein the second cooling slot has a diffusion angle less than 15 degrees; anda third cooling slot located between the third flow separator and the second flow separator, wherein the third cooling slot has a diffusion angle less than or equal to 10 degrees.