Wind Noise Spectral Predictions Using a Lattice-Based Method Ford Motor Company

Format:

Conference/Event

Author/Creator:

Leep-Apolloni, Laurine, author.

Conference Name:

Noise & Vibration Conference & Exposition (1999-05-17 : Traverse City, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1999

Summary:

The current ability of the Virtual Aerodynamic/ Aeroacoustic Wind Tunnel to predict interior vehicle sound pressure levels is demonstrated using an automobile model which has variable windshield angles. This prediction method uses time-averaged flow solutions from a lattice gas CFD code coupled with wave number-frequency spectra for the various flow regimes to calculate the side window vibration from which the sound pressure level spectrum at the driver's ear is determined. These predictions are compared to experimental wind tunnel data. The results demonstrate the ability of this methodology to correctly predict wind noise spectral trends as well as the overall loudness at the driver's ear. A more sophisticated simulation method employing the same lattice gas code is investigated for prediction of the time-accurate flow field necessary to compute the actual side glass pressure spectra. Although this lattice-based method shows promise, it does not currently predict the pressure spectra with the level of accuracy necessary to improve the VAWT

Notes:

Vendor supplied data

Publisher Number:

1999-01-1810

Access Restriction:

Restricted for use by site license