| 摘要 |
PURPOSE:To improve a cooling effect, by both providing plural salient walls to the internal surface of a cavity in the leading edge inside of a blade throughout the direction of its height and eliminating a velocity component in the blade chord direction of fluid flowing out in a trailing edge part. CONSTITUTION:Plural salient peripheral walls 31 protruded to the inside are provided to the internal surface of a cavity 17 throughout the direction of height of a blade 1, while a guide wall 32 extended to an intermediate position of the blade 1 from its root part toward its point end is provided to said root part of the blade in the outside of a blow out part 25. Provision of said walls 31 can spread a heat exchange surface while provision of the wall 32 can flow cooling fluid under a condition fully contacted with a cooling surface spread part 26. |
