Navier-Stokes analysis of the flow about a flap edge

A study was conducted to analyze the flow associated with a flap edge, one of the three-dimensional properties of flow over a high-lift system. Structured, overset grids were utilized with an incompressible Navier-Stokes to calculate the flow over a two-element high-lift. The full-span and half-span Fowler flap configurations were then determined. Results indicated a number of flow features that significantly influence the performance of high-lift system. These include the flap-edge vortex, flow separation and spanwise lift distribution.