| 摘要 |
<p>A suction generation device comprising a vortex generator 1 and vortex accelerator 2 attached on a surface 4 in an incoming primary flow and having a secondary fluid flow outlet/suction hole 3 on the surface along the generated vortex path. The device may be used on water, hydro, air or wind turbine blades to enhance the energy-capturing, control airfoil circulation at blade tips to control aerodynamic blade loading and inducing suction to transfer flow momentum. The device suppresses adverse pressure gradients, the stall or separation bubble, and helps laminarize the flow over the blade or wing. Also claimed: a turbine having apparatus for controlling flow circulation around a blade; a turbine having a blade with at low pressure surface fluid inlet ports, and a suction device; and a method of extracting fluid flow energy comprising vortex generation, vortex acceleration, converting the vortex into a low pressure region confined inside at least one low pressure chamber.</p> |
