A CAE procedure for modeling the aerodynamic excitation of greenhouse surface vibration and its reradiation as noise is described. The procedure begins with a description of the steady flow over the surfaces. This is used as a basis for estimating the spatially varying unsteady pressure loading. The approach is semi-empirical, utilizing normalized pressure data collected through wind tunnel testing of production vehicles. The unsteady pressures are utilized within a normal mode analysis to predict vibration of the greenhouse panels. Interior noise associated with the panel vibration is estimated from a statistical energy analysis model. We show that contributions of multiple surfaces can be significant.
A Semi-Empirical Approach for Modeling Greenhouse Surface Wind Noise
Sae Technical Papers
Noise & Vibration Conference & Exposition ; 1999
1999-05-19
Conference paper
English
A semi-empirical approach for modeling greenhouse surface wind noise
Automotive engineering | 1999
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