Shroud hanger assembly cooling

A shroud assembly for a gas turbine engine, the gas turbine engine defining an axial direction and a circumferential direction, the shroud assembly comprising:

• a plurality of shroud segments, each shroud segment having a hot side portion and a cold side portion, the hot side portion facing a gas flow path of the gas turbine engine;
• and
• a shroud hanger for mounting the shroud segments in the gas turbine engine, the shroud hanger defining a plurality of conduits for receipt of a flow of cooling fluid, each conduit comprising
• a first arm extending along the axial direction and defining a first channel for receipt of the flow of cooling fluid, and
• a second arm extending from the first arm along the circumferential direction, the second arm defining an outlet and a second channel for receipt of the flow of cooling fluid from the first channel,
• wherein the shroud segments and the shroud hanger together define an annular cavity, the cold side portion of each shroud segment facing the cavity,
• wherein each outlet of the plurality of outlets is configured for the flow of cooling fluid to exit each conduit into the cavity substantially tangential to the cold side of a shroud segment adjacent the outlet.

A method of cooling an annular shroud of a shroud assembly of a gas turbine engine, the shroud assembly comprising:

• a plurality of shroud segments positioned side-by-side along a circumferential direction to form the shroud, each shroud segment having a hot side portion and a cold side portion, the hot side portion facing a gas flow path of the gas turbine engine;
• and
• a shroud hanger for mounting the shroud segments in the gas turbine engine, the shroud segments and the shroud hanger together defining an annular cavity, the shroud hanger defining a plurality of conduits for receipt of a flow of cooling,
• the method comprising:
• directing the flow of cooling fluid into the cavity along the circumferential direction and substantially tangential to the cold side portion of each shroud segment of the plurality of shroud segments such that the cooling fluid swirls about the cavity to cool the cold side portion of each shroud segment.