A fluorescent PIV technique for turbomachinery flows

Abstract This paper presents the development and applications of a fluorescent Particle Image Velocimetry (PIV) technique as countermeasure for undesired light reflections on surfaces channel walls or obstacles. The employment dye-doped tracer particle with wavelength-specific optical filter enables separation stokes-shifted emission from surfaces. Aiming at applying to engine-like turbomachinery flows, particles were made out pyrromethene 567 Di-Ethyl-Hexyl-Sebacat considering multiple aspects characteristics. developed firstly tested in low-speed wind tunnel metal turbine blade placed flow path laser sheet oriented impinge surface. With installation an adequate filter, successfully removed, reasonable vector calculations enabled proximity reflective Secondly, PIV was performed high-pressure stage hosted high-speed short-duration rotating rig demonstrate feasibility engine-representative flows.