| 摘要 |
PROBLEM TO BE SOLVED: To suppress an increase in secondary flow loss generated at wall surfaces of inner/outer rings of a turbine cascade.SOLUTION: The turbine cascade includes: an inner ring 2; an outer ring 1; and multiple turbine stationary blades 14 provided between the inner ring 2 and the outer ring 1. The wall surface 40 of the inner ring 2 includes a front-side part 40a and a back-side part 40b. A distance between the front-side part 40a and a rotation center 16 is shorter than that between the back-side part 40b and the rotation center 16. |
