Method of using an active flow control system for lift enhancement or destruction in a wind turbine blade

摘要

A method for actively manipulating a primary fluid flow over a surface using an active flow control system including an active fluid flow device to provide lift enhancement and lift destruction. The method including the disposing of an active fluid flow device in the surface. The active fluid flow device is then operated to generate at least one of a steady blowing secondary fluid flow, a pulsed secondary fluid flow or an oscillating secondary fluid flow. While flowing the primary fluid over the surface to create a primary flow field, a secondary fluid flow is injected in an upstream direction and substantially opposed to the incoming primary fluid flow. The injecting of the secondary fluid flow in this manner provides for influencing of the primary flow field by manipulating a momentum of the secondary fluid flow to influence the incoming primary fluid flow and resultant lift.

主权项

1. A method of manipulating a primary fluid flow over a surface of a wind turbine blade, the method comprising:
disposing a plurality of active fluid flow devices in an opening of the surface of the wind turbine blade, the opening extending substantially along an entire length of a span of the wind turbine blade to accommodate the plurality of active flow control devices; operating the plurality of active fluid flow devices to generate at least one of a steady blowing secondary fluid flow, a pulsed secondary fluid flow or an oscillating secondary fluid flow; flowing the primary fluid over the surface to create a primary flow field and provide a lift force; injecting the secondary fluid flow in a direction substantially opposed to a direction of the primary fluid flow to capture energy from the primary fluid flowing through a desired and controllable length of the span of the wind turbine blade; and influencing the primary flow field by manipulating a momentum of the secondary fluid flow to influence the incoming primary fluid flow and the lift force.