ABSTRACT
The need for improved durability, reduced noise levels, and increased performance has generated a strong interest in identifying and controlling the physical mechanisms associated with the interaction between adjacent blade rows. The two principal types of such interaction are usually referred to as potential-flow and wake interaction [1]. Potential-flow interaction results from the variations in the velocity potential or pressure fields associated with the blades of a neighboring row, and their effect upon the blades of a given row moving at a different rotational speed. This type of interaction is of serious concern when the axial spacing between adjacent blade rows is small or the flow Mach number is high. Wake interaction is the effect upon the flow through a downstream blade row of the vortical and entropic wakes shed by one or more upstream rows.
