Título
Experimental assessment of scale-effects on the aerodynamic characterization of a transitionally-operating airfoil working under clean flow conditionsExperimental assessment of scale-effects on the aerodynamic characterisation of a transitionally-operating airfoil working under clean flow conditions
Otras instituciones
IkerbasqueVersión
Preprint
Derechos
© 2022 ElsevierAcceso
Acceso embargadoVersión del editor
https://doi.org/10.1016/j.measurement.2021.110414Publicado en
Measurement Vol. 188. Artículo 110414Editor
ElsevierPalabras clave
wind tunnel
Transitional regime
Flow measurement techniques
Uncertainty analysis ... [+]
Transitional regime
Flow measurement techniques
Uncertainty analysis ... [+]
wind tunnel
Transitional regime
Flow measurement techniques
Uncertainty analysis
ODS 7 Energía asequible y no contaminante
ODS 9 Industria, innovación e infraestructura
ODS 11 Ciudades y comunidades sostenibles [-]
Transitional regime
Flow measurement techniques
Uncertainty analysis
ODS 7 Energía asequible y no contaminante
ODS 9 Industria, innovación e infraestructura
ODS 11 Ciudades y comunidades sostenibles [-]
Resumen
Wind tunnel tests are carried out upon a NACA0021 airfoil subjected to transitional Reynolds numbers. Transitionally-operating airfoils show a high sensitivity to external conditions and pose relevant ... [+]
Wind tunnel tests are carried out upon a NACA0021 airfoil subjected to transitional Reynolds numbers. Transitionally-operating airfoils show a high sensitivity to external conditions and pose relevant measurement issues for capturing the physical processes adequately. On the global side, the employed set of techniques measures lift forces directly and uses the momentum-deficit method for drag coefficients. Locally, the development of transitional structures is acknowledged via surface pressure measurements carried out by pressure taps together with oil-flow visualizations. The coupling of such techniques with a well-founded uncertainty analysis shows two relevant aspects of the measurement protocolization: on the one hand, the limitations of either the global or local methods for completely accounting for all transitional phenomena. On the other hand, the fact that combining the proposed set of different measurement techniques with a systematic protocol is a mandatory requirement for achieving a holistic characterization of transitionally-operating airfoils. [-]
Sponsorship
Gobierno Vasco-Eusko JaurlaritzaID Proyecto
info:eu-repo/grantAgreement/GV/Programa predoctoral de formación del personal investigador no doctor 2017-2018/PRE_2017_1_0178/CAPV//Colecciones
- Artículos - Ingeniería [639]