| 摘要 |
<p>A grid of blades for a turbine comprising a cascade of blade arranged between a ceiling (12) and a floor (11) defining a series of channels (3). This grid comprises communications (13, 23) drilled into the ceiling (12) and/or the floor (11) opening into one end at the vicinity of the inner face of the blades at the neck (10) of the channel and at the other end down stream of the grid. Decrease of the inner face over-pressure only at right angles with the floor (11) and the ceiling (12) causing a decrease of secondary losses, while the distribution of the pressure remains optimum in the same part of the channel. </p> |
