Shed vortex peak vorticity is also observed to be proportional to M, alfa, and h/delta. With these parameters held constant, circulation is observed to fall off in monotonic fashion with increasing airfoil aspect ratio AR. Shed vortex circulation is observed to be proportional to M, alfa, and h/delta.
#Naca 0012 airfoil generator generator#
Circulation and peak vorticity data are derived from crossplane velocity measurements conducted at or about 1 chord downstream of the vortex generator trailing edge. The turbulent boundary layer thickness to pipe radius ratio is delta/R = 0. The vortex generators are mounted either in isolation or in a symmetric counter-rotating array configuration on the inside surface of a straight pipe. The Gurney flap was attached to the airfoil perpendicular to the bottom surface at. Tests were carried out at three free-stream velocities of U 3.0, 4.3 and 5.3 m/s, corresponding to Reynolds numbers Re. The geometry and flow parameters varied include angle-of-attack alfa, chordlength c, span h, and Mach number M. The test model used was a NACA 0012 airfoil with the chord length c 100 mm and the span b 250 mm, giving the aspect ratio b/c 2.5. The vortex generator is a symmetric airfoil having a NACA 0012 cross-sectional profile. The modelling of symmetric airfoil vortex generators An experimental study is conducted to determine the dependence of vortex generator geometry and impinging flow conditions on shed vortex circulation and crossplane peak vorticity for one type of vortex generator.
0 kommentar(er)
