Velocity measurements downstream of a lobed forced mixer with different trailing edge configurations

摘要

Velocity and turbulence characteristics have been measured downstream of a lobed forced mixer with three different trailing edge configurations, using a two-component laser-Doppler anemometer at a Reynolds number of 2.27 x 10~4 (based on the bulk mean velocity of the two streams, and a nominal wavelength of the lobe at 33 mm) and with velocity ratios of 1:1, 1:2 and 1:3. The three trailing edge configurations under investigation have the shape of a square wave, a semicircular wave and a triangular (saw tooth) wave.