Rotating Stall in Blade Rows Operating in Shear Flow : 1st Report : The Case of Shear Flow with Linear Velocity Profile

抄録

Nature of the unsteady small perturbations observed in a sheared mean flow with linear velocity profile is examined. Results are applied to the actuator-disk analysis of a rotating stall in three-dimensional blade rows subjected to the spanwise shear flow. An example of numerical calculation is given, which shows the effect of the shear flow on the occurrence point of the rotating stall, the propagating velocity, and the distribution of velocity disturbances.