| 摘要 |
The invention relates to rotor blade (20) for a wind turbine (10), wherein the rotor blade (20) comprises a shell (31) which defines the outer shape of the rotor blade (20), and a cavity (32) which is encompassed by the shell (31), and a longitudinal axis (26) which extends from the root section (21) of the rotor blade (20) to the tip section (22) of the rotor blade (20). Furthermore, the tip section (22) comprises an opening (40) for emitting air from the cavity (32) to the outside. The opening (40) is configured such that the emitted air (43) flows out in an angle (44) which deviates less than sixty degrees from the longitudinal axis (26) of the rotor blade (20). Thus, a tip vortex, which is typically present at the tip section (22) of the rotor blade (20), is displaced from the tip section (22). Note that the air is not actively, but passively driven out of the cavity (32) into the outside through the opening (40) at the tip section (22) of the rotor blade (20). This mechanism can also be described as a "passive pumping" mechanism. |
