The application of a semi-actuator disk model to sound transmission calculations in turbomachinery, part II: Multiple blade rows

The work described in this paper extends the application of a semi-actuator disk model to the transmission of sound in multiple blade rows. The blade rows may be rotating or stationary, the basic element comprising a pair of blades in a rotor-stator configuration. The rows are coupled by reflected acoustic waves and shed vorticity interactions, leading to a sound regeneration mechanism between each pair of blades.