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http://dx.doi.org/10.5050/KSNVE.2012.22.5.444

Computation of Serrated Trailing Edge Flow and Noise Using a Hybrid Zonal RANS-LES  

Kim, Tae-Hyung (서울대학교 기계항공공학부)
Lee, Seung-Hoon (서울대학교 기계항공공학부)
Lee, Soo-Gab (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.5, 2012 , pp. 444-450 More about this Journal
Abstract
The evaluation of a zonal RANS-LES approach is documented for the prediction of broadband noise generated by the flow past unmodified and serrated airfoil trailing edges at a high Reynolds number. A multi-domain decomposition is considered, where the acoustic sources are resolved with a LES sub-domain embedded in the RANS domain. A stochastic vortex method is used to generate synthetic turbulent perturbations at the RANS-LES interface. The simulations are performed with a general-purpose unstructured control-volume code FLUENT. The far-field noise is calculated using the aeroacoustic analogy of Ffowcs Williams-Hawkings. The results of the simulation are validated through the full-scaled wind turbine acoustic measurements. It is found that the present approach is adequate for predicting noise radiation of serrated trailing edge flow for low noise rotor system.
Keywords
Hybrid-zonal Method; Serrated Trailing Edge; Noise Reduction; Aero-acoustics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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