Detailed Flow Measurements in Casing Boundary Layer of 427-Meter-per-Second-Tip-Speed Two-Stage Fan with Casing Treatment

摘要

Detailed flow measurements between all blade rows were taken in the outer 30 percent of passage height of a two-stage fan. Tabulations of the detailed flow measurements are included. Results of these measurements revealed the steep axial velocity profiles near the casing. The axial velocity profile near the casing at the rotor exits was much steeper than at the stator exits. The data also show overturning of the flow at the tip at the stator exits. The effect of mixing is shown by the redistribution of the first-stage rotor-exit total temperature profile as it passes through the following stator. (Author)