| 摘要 |
PROBLEM TO BE SOLVED: To cool an outer surface by dispersing blow-off flow in a wide region in M downstream direction, forming a uniform protecting film, and equalizing the outer surface temperature of a high temperature member. SOLUTION: A low temperature fluid 5 is injected from the inside of a high temperature member 1 through an injection hole 2 formed on the high temperature member whose outer surface 1a is exposed by a high temperature fluid 9, and the outer surface of the high temperature. member 1 is film-cooled. In this case, the injection hole 2 is formed so that its axis 2a forms an acute angle 2b to a flow direction of the high temperature fluid 9, and it is provided with a dispersion part 6 which is formed in the vicinity of the outlet of the injection hole 2, and which is opened an outer surface by an angle such that an angle of a flow direction of the high temperature fluid 9 is an acute angle 2c smaller than an acute angle formed by an axis, and at least one projection part 8 formed on the dispersion part 6. |
