Patent ID: 9732674
Date: 2017-08-15
CPC Classifications: F01D,F02C,F05D

Claim:
1. An exhaust diffuser of a gas turbine comprising: a wall surface in which an annular flow path is formed; a structure configured to extend in a direction intersecting a main stream direction of a fluid flowing through the flow path from the wall surface; and a concave section forming region formed throughout a range comprising the structure in the main stream direction and in a circumferential direction of the wall surface and having a concave section formed in the wall surface, wherein the concave section, in a flow path cross section, gradually deepens and then gradually becomes shallow from one side toward the other side in the circumferential direction, and the concave section, in the flow path cross section, is configured to be the deepest in the circumferential direction of the flow path at a position from which the structure of the wall surface extends, and wherein, as the structure occupies a partial range of the flow path in the flow path cross section intersecting the main stream, a cross-sectional area of the flow path is varied in accordance with positional variation in the main stream direction.