Abstract
Experiments on the total pressure loss coefficient of a cascade in a periodically fluctuating flow generated with a rotating cylinder row are described. similarity of a flow field obtained and one developing after an actual compressor rotor is examined, and the total pressure loss of a test cascade is determined from the measurement of wake profiles using a hot wire anemometer. Total pressure loss coefficient of a lightly loaded cascade in a fluctuating flow increases to 1.11.25 times that in a steady flow. An unstalled range of operation of a cascade enlarges by 3 deg in an incidence with a rise in intensity of the fluctuation. Influence of intensity on the cascade performance is more dominant than that of frequency, but the effect saturats at the intensity 810%.
