| 摘要 |
A turbine blade (1) includes a plurality of rows of cooling portions (4, 4A, 4B) which have slots (42) that have notch portions (41) and through holes (43) that discharge cooling gas that has been introduced into an internal portion (25) of a blade (2) onto a pressure side blade surface (23), and that are formed in rows that are stacked in a direction between the blade leading edge and the blade trailing edge on the pressure side blade surface. This turbine blade (1) is provided with: turbulence promoting cooling portions (4B) which have first slots that are provided in the row located nearest to the downstream side from among the plurality of rows, and that have turbulence promoting devices (44, 45, 46) in areas exposed by cutting the pressure side blade surface to form the notch portions (41); and film cooling portions (4A) which have second slots that are provided in other rows from among the plurality of rows, and that form a film cooling layer in the areas exposed by cutting the pressure side blade surface to form the notch portions (41) of the second slots. |
