摘要 |
<p>PROBLEM TO BE SOLVED: To provide a turbine blade capable of improving turbine efficiency.SOLUTION: A turbine blade comprises a platform part forming a passage face of working gas, and an airfoil part extending from the platform part. The airfoil part comprises: a concave-shaped positive pressure face and a convex-shaped negative pressure face for connecting a front edge and a rear edge; and a blade end face that is a tip end face opposite to the platform part. The blade end face has one or more linear grooves or ribs, and both ends of one or more grooves or ribs cross with the negative pressure face.</p> |