Numerical Study of NACA 0012 Aeroacoustics Response for Normal and Icing Conditions

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This paper describes a multiphase computational fluid dynamics (CFD) based numerical study about aeroacoustics response of NACA0012 airfoil for both normal and icing conditions. Three different turbulence models (RANS, DES & LES) are tested where Detached Eddy simulation (DES) turbulence modelling approach is found suitable for this case study. Aeroacoustics numerical results for clean NACA 0012 are compared with the experimental data obtained from NASA report 1218 [1], where a good agreement is found. An extended CFD study is carried out for iced NACA 0012 airfoil, where results show more boundary layer flow separation in case of iced blade profile that leads to a change in the aerodynamic characteristics of the blade profile and increase in sound level for iced airfoil as compared to the clean NACA0012 airfoil.

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89-93

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January 2018

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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[1] F. T. Brooks, & M. A. Marcolini, Airfoil Self Noise and Prediction, (1989).

Google Scholar

[2] S. Fujii, K. Takeda, H. Nishiwaki, A note on tower wake/blade interaction noise of a wind turbine, J. Sound Vibr. 97(2) (1984) 333-336.

DOI: 10.1016/0022-460x(84)90326-2

Google Scholar

[3] M. Hand, D. Simms, L. Fingersh, D. Jager, J. Cotrell, S. Schreck, S. Larwood, Unsteady Aerodynamics Experiment Phase VI: Wind Tunnel Test Configurations and Available Data Campaigns, (2001) NREL technical report.

DOI: 10.2172/15000240

Google Scholar

[4] S. Schreck, M. Robinson, Tip speed ratio influences on rotationally augmented boundary layer topology and aerodynamic force generation, (2004), AIAA 2004-663.

DOI: 10.2514/6.2004-663

Google Scholar

[5] J. O. Mo, Y. H. Lee, Numerical simulation for prediction of aerodynamic noise characteristics on a HAWT ofNREL phase VI, J. Mech. Sci. Tech. 5 (2011) 1341-1349.

DOI: 10.1007/s12206-011-0234-1

Google Scholar

[6] M. Björkman, Long time measurements of noise from wind turbines, J. Sound Vib. 277(3) (2004) 567-572.

DOI: 10.1016/j.jsv.2004.03.018

Google Scholar

[7] J. Shin, et al., Prediction of ice shapes and their effect on airfoil performance. 1991, NASA Technical Memorandum 103701.

Google Scholar

[8] J. T. Batinat, U. A. Branch, H. T. Yangi. Spatial adaption procedures on unstructured meshes for accurate unsteady aerodynamic flow computation. (1991).

DOI: 10.2514/6.1991-1106

Google Scholar