Step-by-Step Numerical Prediction of Aerodynamic Noise Generated by High Speed Trains
نویسندگان
چکیده
Abstract In this paper, the unsteady flow around a high-speed train is numerically simulated by detached eddy simulation method (DES), and far-field noise predicted using Ffowcs Williams-Hawkings (FW-H) acoustic model. The reliability of numerical calculation verified wind tunnel experiments. superposition relationship between radiated local aerodynamic sources whole source analyzed. Since trains derived from its different components, stepwise proposed to predict trains. results show that conform principle sound energy superposition. Using head, middle tail cars as sources, models are established obtain each source. total A step-by-step used superimposed value noise. This consistent with model’s averaged pressure level longitudinal measurement points differs 1.92 dBA. prediction can provide reference for generated long marshalling
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ژورنال
عنوان ژورنال: Chinese Journal of Mechanical Engineering
سال: 2022
ISSN: ['1000-9345', '2192-8258']
DOI: https://doi.org/10.1186/s10033-022-00705-4