| 摘要 |
<p>A fluid machine according to an embodiment includes a sealing portion which is formed of an annular minute gap formed between a runner band of a runner configuring a 5 rotating portion and a sealing liner which is a stationary portion and arranged in opposition to the runner band. A groove having a quadrangular cross-sectional shape is formed circumferentially on a surface of the sealing liner configuring the sealing portion. In a cross section 10 perpendicular to a groove forming direction of the groove, an angle 0, which is formed between a side WU of the groove on the most upstream side with respect to the flowing direction of the leakage flow, and a side WO of the groove which is on an extended line of the surface of the sealing 15 liner, is determined to be 150 or more and 40* or less. 4933319_1 (GHMatters) P87783.AU i"</p> |
