| 摘要 |
<p>A blade surrounded by: a leading edge portion (11), which is where fluid (F) flows in; a pressure surface (12) which is a concave curve shape concaved along a direction the fluid (F) flows; a suction surface (13) which is a convex curve shape convexed along a direction the fluid (F) flows; and a trailing edge portion (14), which is where the fluid (F) flows out, in which a disturbance addition portion (15) is provided on the suction surface (13) closer to the leading edge portion (11) than a maximum velocity point (P), where the flow velocity of the fluid (F) is maximized on the suction surface (13), for disturbing a laminar flow on the suction surface (13) and for transitioning to a turbulent flow.</p> |
