Component and turbine assembly with film cooling

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall;
• and
• at least one flow modifier formed on the hot surface of said wall and adapted to direct the coolant flowing from said film-cooling hole and out of the exit site toward the hot surface of said wall, wherein said flow modifier extends outwards from the hot surface of said wall and conforms to the hot surface of said wall, wherein said at least one flow modifier does not extend over the exit site, and wherein said at least one flow modifier is rounded.

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall;
• and
• at least one flow modifier formed on the hot surface of said wall and adapted to direct the coolant flowing from said film-cooling hole and out of the exit site toward the hot surface of said wall, wherein said flow modifier extends outwards from the hot surface of said wall and conforms to the hot surface of said wall, wherein said at least one flow modifier does not extend over the exit site, and wherein said at least one flow modifier is polygonal.

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall;
• and
• at least one flow modifier formed on the hot surface of said wall and adapted to direct the coolant flowing from said film-cooling hole and out of the exit site toward the hot surface of said wall, wherein said flow modifier extends outwards from the hot surface of said wall and conforms to the hot surface of said wall, wherein said at least one flow modifier does not extend over the exit site, and wherein said at least one flow modifier is positioned on a lateral side of the exit site.

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall;
• at least one flow modifier formed on the hot surface of said wall and adapted to direct the coolant flowing from said film-cooling hole and out of the exit site toward the hot surface of said wall, wherein said flow modifier extends outwards from the hot surface of said wall and conforms to the hot surface of said wall;
• and
• at least one ridge formed on the hot surface of said wall, wherein said at least one ridge extends along at least a portion of the exit site and further extends to a position downstream of the exit site.

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall;
• and
• at least one ridge formed on the hot surface of said wall, wherein said at least one ridge extends along at least a portion of the exit site and further extends to a position downstream of the exit site.

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall and having a passage wall;
• and
• at least one flow modifier formed on the passage wall and adapted to spread the coolant flowing from said film-cooling hole and out of the exit site laterally.

A component comprising:

• a wall having a cold surface and a hot surface;
• at least one film-cooling hole extending through said wall for flowing a coolant from the cold surface to the hot surface, said film-cooling hole defining an exit site in the hot surface of said wall and having a passage wall;
• and
• at least one flow modifier formed on the passage wall and adapted to spread the coolant flowing from said film-cooling hole and out of the exit site laterally, wherein said at least one flow modifier extends out of the exit site and beyond the hot surface of said wall.

A turbine assembly comprising:

• a first component;
• a second component, said first and second components defining a cooling slot, wherein said cooling slot receives and guides a secondary coolant flow;
• and
• at least one flow modifier formed on a surface of one of said first and second components, wherein said at least one flow modifier is adapted to enhance the secondary coolant flow along at least one of said first and second components within said coolant slot, wherein said at least one flow modifier forms a ridge extending along the respective one of said first and second components, and wherein the ridge extends onto a hot gas path surface of the respective one of said first and second components.