Evaluation and Validation of PSP and TSP Measurement Techniques in Turbomachinery Applications

Abstract

This work details the development and application of fastresponding pressure-sensitive paint (fast PSP) and temperature-sensitive paint (TSP) for measuring unsteady surface pressure and temperature on fast rotating blades of turbomachinery. Two measurement techniques: phase-lock intensity-based method and single-shot lifetime-based method were first performed on a high-speed fan and the results were evaluated and validated. The single-shot lifetime-based method was found more suitable for measurements of fast rotating blades. Therefore, an experiment using single-shot lifetime-based method was carried out on a turbocharger compressor using the testing facility at Wuxi IHI Turbo (WIT). The pressure distribution on the compressor blades were compared between numerical simulation data and experimental results. The PSP and CFD data showed good agreement in most regions.