Rotor blade assembly and a wind turbine having the rotor blade assembly
A rotor blade assembly for a wind turbine is presented. The rotor blade assembly includes a rotor blade having a surface, where the surface of the rotor blade includes an inclined groove. The rotor blade assembly further includes at least one add-on element mounted on the surface of the rotor blade via a bonding interface downstream of the inclined groove such that particulate matter in an airflow upstream of the at least one add-on element is deflected away from the bonding interface between the surface of the rotor blade and the at least one add-on element. The wind turbine having the rotor blade assembly is also presented.
1. A rotor blade assembly for a wind turbine, comprising:
a rotor blade comprising a leading edge and a surface, wherein the surface of the rotor blade comprises an inclined groove formed into and recessed within the surface, the inclined groove being a one-sided groove having only one groove edge, the surface defining an arcuate shape extending between the leading edge and the groove edge in a chordwise direction; and
at least one add-on element mounted on the surface of the rotor blade via a bonding interface, the at least one add-on element being spaced apart from and downstream of the inclined groove such that particulate matter in an airflow upstream of the at least one add-on element is deflected away from the bonding interface between the surface of the rotor blade and the at least one add-on element.
2. The rotor blade assembly of claim 1 , wherein the inclined groove is formed such that a height of the surface of the rotor blade is more on an upstream side of the groove edge in comparison to a height of the surface of the rotor blade on a downstream side of the groove edge.
3. The rotor blade assembly of claim 1 , wherein the at least one add-on element is mounted downstream of the groove edge.
4. The rotor blade assembly of claim 1 , wherein a height of the groove edge is more than a height of the bonding interface.
5. The rotor blade assembly of claim 1 , wherein a height of the groove edge is equal to a base height of the at least one add-on element.
6. The rotor blade assembly of claim 1 , wherein a height of the groove edge and a base height of the at least one add-on element are selected such that a height difference between the height of the groove edge and the base height is in a predefined tolerance range.
7. The rotor blade assembly of claim 1 , wherein the at least one add-on element comprises a vortex generator, a serration panel, a trailing edge extension structure, or combinations thereof.
8. A wind turbine, comprising:
a tower;
a rotor hub mounted on the tower; and
a plurality of rotor blade assemblies mounted in the rotor hub, wherein one or more of the plurality of rotor blade assemblies comprise:
a rotor blade comprising a leading edge and a surface, wherein the surface of the rotor blade comprises an inclined groove formed into and recessed within the surface, the inclined groove being a one-sided groove having only one groove edge, the surface defining an arcuate shape extending between the leading edge and the groove edge in a chordwise direction; and
at least one add-on element mounted on the surface of the rotor blade via a bonding interface, the at least one add-on element being spaced apart from and downstream of the inclined groove such that particulate matter in an airflow upstream of the at least one add-on element is deflected away from the bonding interface between the surface of the rotor blade and the at least one add-on element.
9. The wind turbine of claim 8 , wherein the inclined groove is formed such that a height of the surface of the rotor blade is more on an upstream side of the groove edge in comparison to a height of the surface of the rotor blade on a downstream side of the groove edge.
10. The wind turbine of claim 8 , wherein the at least one add-on element is mounted on a downstream side of the groove edge.
11. The wind turbine of claim 8 , wherein a height of the groove edge is more than a height of the bonding interface disposed between the surface of the rotor blade and the at least one add-on element.
12. The wind turbine of claim 8 , wherein the at least one add-on element comprises a vortex generator, a serration panel, a trailing edge extension structure, or combinations thereof.