Analysis of low Reynolds number flow past Gurney flap

Abstract

The trailing edge region of a single element wing fitted with Gurney flap at low Reynoldsnumbers has been studied.The complex flow separation phenomena on airfoils with Gurney flap at low Reynolds numbershave some specific features as the separation on set and reattachment locations and the streamlinepattern.A detailed study shows the influence of the size of flap on the stall behaviour and on theaerodynamic characteristics.

Keywords

• Low Reynolds number
• Gurney Flap
• flow control
• Coanda jet technique