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Time-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoil
Joint Authors
Tabatabaei, Narges
Cervantes, Michel J.
Trivedi, Chirag
Source
International Journal of Rotating Machinery
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-07
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
The main objective of this study is to estimate the dynamic loads acting over a glaze-iced airfoil.
This work studies the performance of unsteady Reynolds-averaged Navier-Stokes (URANS) simulations in predicting the oscillations over an iced airfoil.
The structure and size of time-averaged vortices are compared to measurements.
Furthermore, the accuracy of a two-equation eddy viscosity turbulence model, the shear stress transport (SST) model, is investigated in the case of the dynamic load analysis over a glaze-iced airfoil.
The computational fluid dynamic analysis was conducted to investigate the effect of critical ice accretions on a 0.610 m chord NACA 0011 airfoil.
Leading edge glaze ice accretion was simulated with flat plates (spoiler-ice) extending along the span of the blade.
Aerodynamic performance coefficients and pressure profiles were calculated and validated for the Reynolds number of 1.83 × 106.
Furthermore, turbulent separation bubbles were studied.
The numerical results confirm both time-dependent phenomena observed in previous similar measurements: (1) low-frequency mode, with a Strouhal number Sth≈0,013–0.02, and (2) higher frequency mode with a Strouhal number StL≈0,059–0.69.
The higher frequency motion has the same characteristics as the shedding mode and the lower frequency motion has the flapping mode characteristics.
American Psychological Association (APA)
Tabatabaei, Narges& Cervantes, Michel J.& Trivedi, Chirag. 2018. Time-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoil. International Journal of Rotating Machinery،Vol. 2018, no. 2018, pp.1-14.
https://search.emarefa.net/detail/BIM-1175573
Modern Language Association (MLA)
Tabatabaei, Narges…[et al.]. Time-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoil. International Journal of Rotating Machinery No. 2018 (2018), pp.1-14.
https://search.emarefa.net/detail/BIM-1175573
American Medical Association (AMA)
Tabatabaei, Narges& Cervantes, Michel J.& Trivedi, Chirag. Time-Dependent Effects of Glaze Ice on the Aerodynamic Characteristics of an Airfoil. International Journal of Rotating Machinery. 2018. Vol. 2018, no. 2018, pp.1-14.
https://search.emarefa.net/detail/BIM-1175573
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175573