Standard Cascade Experiment for Typical High-Load and Large-Turn-Angle Compressor Airfoils (NPU-28))

Group conducted extensive research and discussions. Leveraging the research results from Northwestern Polytechnical University on the influence mechanisms and regulation strategies of planar cascade wind tunnel flow field quality, the independently designed modern high-load compressor standard model cascade NPU-28 (with a blade camber angle of 43.5°, solidity of 1.72, and diffusion factor of 0.5) was established. This study obtained extensive experimental data, including cascade attack angle characteristics, isotropic Mach number on the blade surface, total pressure loss coefficient at the cascade channel exit, and exit flow angle for nine operating conditions within the inflow Mach number range of 0.4 and attack angle range of -10.9° to 5.1°.

The data also provide flow field quality parameters, such as inflow Mach number uncertainty, axial velocity density ratio, and exit periodic index, along with measurement positions, test conditions, and inflow turbulence intensity, offering complete test information. Additionally, the data link for the standard blade cascade model NPU-MGS1, based on the DLR compressor Airfoil, is scidb.cn/s/UbEFZn.