| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine blade for suppressing the curling-up of the flow on the back side of the blade to reduce the pressure loss by softening the degree of the cross flow flowing from the web side of the blade to the back side colliding with the back side, and weakening passage vortex generated in the boundary layer, in for the turbine rotor blade favorably mainly applied to a gas turbine. SOLUTION: A suppression part for suppressing the curling up of a cross flow flowing from the web side of either one adjoining rotor blades to the back side of the other rotor blade, on the back side of the other rotor blade, is formed in the outer peripheral surface of a platform to which plural rotor blades are installed circumferentially at specified intervals. Thus, the cross flow is interrupted and the curling up of the cross flow to the back side of the rotor blade is suppressed by the suppression part. The generation of the pressure loss was thus prevented.
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