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Semi-Empirical Model for Flow Noise Prediction on Intake and Exhaust Systems
Technical Paper
1999-01-1654
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Flow noise from exhaust systems is a noise source that contributes to drive-by noise measurements. A prediction tool that allows us to choose the right duct dimensions would be very helpful. Therefore we integrated a flow noise module in a given linear acoustic prediction software.
A flow noise source is modelized as an acoustic source. The source spectra is a function of the Strouhal number. The noise level depends on flow speed. A flow noise measurement with cold flow gives a set of source describing parameters. Using these parameters and the flow noise source model, a prediction of flow noise for mufflers is possible.
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Citation
Kunz, F., "Semi-Empirical Model for Flow Noise Prediction on Intake and Exhaust Systems," SAE Technical Paper 1999-01-1654, 1999, https://doi.org/10.4271/1999-01-1654.Also In
References
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