Measurements acquired at the rotor exit plane illuminate the interaction of the rotor with the upstream vane row and the\ndownstream vane row.The relative phase of the upstream and downstream vane rows is adjusted using vane clocking so that the\neffect of the upstreampropagating potential field fromthe downstream stator can be distinguished fromthe effects associated with\nthewakes shed fromtheupstreamstator.Unsteady absoluteflowangle informationshows that thedownstreampotentialfieldcauses\nthe absolute flowangle to increase in the vicinity of the downstreamstator leading edge.Thepresence of Stator 1wake is also detected\nat this measurement plane using unsteady total pressure data. The rotor wakes are measured at different circumferential locations\nacross the vane passage, and the influence of Stator 1 wake on the suction side of the rotor wake is evident. Also, the influence of\nthe downstreamstator is detected on the pressure side of the rotor wake for a particular clocking configuration. Understanding the\nrole of the surrounding vane rows on rotor wake development will lead to improved comparison between experimental data and\nresults from computational models.
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