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Spontaneous rotational Raman thermometry for air flow characterization in a turbomachine test rig
Author(s) -
Scherman Michael,
Santagata Rosa,
Faleni Jean Pierre,
Orain Mikael,
Bresson Alexandre,
Attaltretout Brigitte,
Krumme Alexander
Publication year - 2019
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.5712
Subject(s) - turbomachinery , thermocouple , rotor (electric) , raman scattering , flow (mathematics) , raman spectroscopy , temperature measurement , characterization (materials science) , synchronization (alternating current) , materials science , laser , mechanics , aerospace engineering , physics , nuclear engineering , optics , mechanical engineering , engineering , electrical engineering , channel (broadcasting) , thermodynamics , composite material
Noninvasive and accurate measurements are essential to study the reactive flows in aeronautical engines. This paper reports the results of a unique measurement campaign providing the temperature flow field in a large‐scale facility turbomachine test rig using spontaneous rotational Raman scattering technique. Different planes of interest and operating conditions are probed, showing good agreement with thermocouple measurements. Fast temperature variations (>7.7 kHz) could be probed thanks to synchronization of the laser pulse with the rotor clock. The results outline the performance of in situ Raman technique to investigate steady and unsteady flows in turbine's conditions.