Rotor blade of a wind turbine comprising a lift modifying device and method for installing thereof

A rotor blade of a wind turbine, the rotor blade comprising:

• a lift modifying device having at least one fluid jet module and at least one compressed fluid source, wherein the at least one fluid jet module is a panel and comprises multiple fluid jets, which are fluidically connected to the at least one compressed fluid source,
• wherein the panel of the at least one fluid jet module is mounted as an add-on onto an outer surface of a suction side or a pressure side of the rotor blade, the panel of the at least one fluid jet module having a first surface and a second surface opposite of the first surface, the first surface located on the outer surface of the rotor blade, further wherein the first surface and the second surface each having a shape that corresponds to a shape of a portion of the outer surface of the rotor blade to which the at least one fluid jet module is mounted;
• wherein vortex generators are attached to the second surface of the panel of the at least one fluid module, and, in a chordwise direction, the multiple jets formed by orifices in the panel are located between a leading edge of the rotor blade and the vortex generators;
• wherein, during a normal operation of the rotor blade, the vortex generators increase a lift coefficient of the rotor blade, and in response to operational or environmental conditions, the lift modifying device is configured to be activated such that the at least one compressed fluid source provides an injection of fluid through the multiple jets which generates a fluid curtain that separates air flow around an airfoil of the rotor blade creating a stalled flow after the multiple jets, which reduces the lift coefficient of the rotor blade and inhibits a vortex generation process of the vortex generators placed after the multiple jets.