Impact of Surface Roughness on the Turbulent Wake Flow of a Turbine Blade

Figure 6

Averaged velocity (a) and vorticity (b) field in the wake of the smooth surface blade for represented in the wake-oriented coordinate system. The wake width , determined from cross wake vorticity profiles, is indicated in the cross wake velocity (c) and vorticity (d) profiles one chord length downstream of the blade’s trailing edge.

(a)

(b)

(c)

(d)