Komplexni vyzkum aerodynamickeho profilu s Guerneyho klapkou.

Abstract

The complex investigation of the NACA 23012 airfoil equipped with the Guerney flap was carried out. The main aim was to describe the non-stationary mechanism of its function and to compare the facts about the flap obtained by several different methods. Force-measurement data above all confirmed the favourable qualities of the Guerney flap previously reported in the literature. Further the PIV-images showed different phases of non-stationary flow downstream of the flap and its changes with the angle of attack, which is completely new. Images of the flowfiled downstream the flap obtained by CFD simulations also approved good degree of agreement with known time-averaged pictures and theit comparison with the PIV picture made possible to investigate connection of time-averaged and instantaneous image of the flowfield in this region.Available from STL, Prague, CZ / NTK - National Technical LibrarySIGLECZCzech Republi