Combustor panel and gas turbine combustor

1 . A combustor panel comprising:

a first panel;

a second panel which is facing the first panel to define a flow path, through which cooling air flows, between the first panel and the second panel, a gas path surface which is allowed to be brought into contact with combustion gas is formed on a surface of the second panel opposite to the flow path; and

a plurality of streamlined fins which are formed between the first panel and the second panel in the flow path so as to be arranged at intervals from each other, and each of which has a front edge at an upstream side in a flow direction of the cooling air and a rear edge at a downstream side in the flow direction,

wherein each of the plurality of streamlined fins connects the first panel and the second panel, and

each of the plurality of streamlined fins is formed such that a dimension in a width direction intersecting both of the flow direction and a direction in which the first panel and the second panel face each other is increased towards the first panel from the second panel, and

each of the plurality of streamlined fins is formed such that the dimension of the width direction gradually increases towards the rear edge side in the flow direction from the front edge and the dimension of the width direction gradually increases towards the front edge side in the flow direction from the rear edge,

wherein each of the plurality of streamlined fins includes

a fin main body which is formed in an elliptical shape of which a major axis direction coincides with the flow direction when viewed from the direction in which the first panel and the second panel face each other; and

a protrusion which is provided at least one of both ends of the fin main body in the flow direction and has a tapered shape in which the dimension in the width direction gradually decreases as it is separated from the fin main body in the flow direction when viewed from the direction in which the first panel and the second panel face each other, and

wherein a dimension of each of the plurality of streamlined fins in the flow direction is decreased towards the first panel from the second panel.

2 . The combustor panel according to claim 1 ,

wherein the plurality of streamlined fins includes:

first fin groups each of which including first fins arranged at intervals in the width direction at a first position in the flow direction; and

second fin groups each of which including second fins arranged at intervals in the width direction at a second position different from the first position in the flow direction,

wherein the first fin groups and the second fin groups are alternately provided in the flow direction, and

wherein the first fin group and the second fin group which are adjacent to each other in the flow direction are provided such that the first fins and the second fins are shifted from each other in the width direction and overlap each other when viewed from the width direction.

3 . The combustor panel according to claim 2 ,

wherein the first fins and the second fins are arranged to overlap each other when viewed from the width direction to define a plurality of small flow paths, and

wherein each of the plurality of small flow paths has a constant flow path cross-sectional area.

4 . The combustor panel according to claim 2 ,

wherein a plurality of large flow paths are defined between the first fins adjacent to each other in the width direction and between the second fins adjacent to each other in the width direction, and

wherein each of the plurality of large flow paths has a constant flow path cross-sectional area.

5 . A gas turbine combustor comprising:

a combustor liner formed by the combustor panel according to claim 1 .