Abstract
The experimental studies were performed to clarify the fundamental flow characteristics of a fan with forward-inclined multi-blades. A crossflow fan is rotated in the open space, i.e. without casing. The crossflow fan simulates a Sirocco fan with a closed inlet. Using fan's height is 115mm, the inlet and outlet radii are 160 and 180mm, respectively. The inlet and outlet blade angles are 90 and 150 degrees, respectively. The impeller includes 52blades. The amplitude fluctuation at the impeller outlet are measured using a hot-wire anemometry. The experimental results show good agreements with respect to frequencies and cell numbers. The FFT spectra of the experimental results show one peak in the crossflow fan. The one-cell oscillations occur for the crossflow fan.
