Preliminary evaluation of interferometry measurements of the flow field in the vicinity of a self-excited single profile
1 Institute of Thermomechanics, Czech Academy of Sciences, Czech Republic
2 NTI FM, Technical University of Liberec, Czech Republic
* Corresponding author: firstname.lastname@example.org
Published online: 24 October 2022
This paper deals with the interferometry measurement of the flow field in the vicinity of the surface of the self-excited single profile NACA 0015 in subsonic air flow. The pressure and velocity on the profile surface, the total forces and total moments acting on the profile are evaluated in the range of the Mach number Ma = 0.18-0.45 and the Reynolds number Re = (3-6)·105 . Since the interferogram processing was conducted with simplified assumptions of the isentropic changes of the flow field, the results have a limited accuracy especially in the case with flow separation. Results were not compared with the direct pressure measurement on the profile surface. The optical measurement method enabled the forces and moments to be evaluated separately for the suction and pressure surface of the airfoil.
© The Authors, published by EDP Sciences, 2022
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