Calibration of Aeroelastic Prediction Methods: Comparison with Experimental Results on a Single Stage Compressor Blisk

摘要

This paper presents a comparison between the measured and computed forced response of a high-pressure compressor Blisk for aeronautical applications. Measurements were carried out by ONERA on a Turbomeca transonic compressor. This test case provides reference experimental results against which simulation tools can be validated and calibrated for forced response analysis. The instrumented rotor was excited by the wakes from struts upstream of the blades. Simulations were carried out using unsteady Reynolds-Averaged Navier-Stokes (RANS) and 3D Euler codes at the test conditions. Blade mistuning was characterized by partial tests and introduced into the mechanical model. The Blisk's mistuned forced response were computed at the experimental gauges position and compared with the test results. Simulation predictions compare very well with the experimental results and these results are discussed.