The knowledge of strength and internal impedance of the sound source is necessary to predict the overall acoustic performance of an exhaust or intake system. Different models have been suggested for measuring the source strength and impedance. In this paper, circuit analogy and wave decomposition models are compared and applied to acoustically characterize a diesel engine. To validate the accuracy of both models and measurement, the sound pressure in the exhaust is predicted from the measured source strength and impedance and compared with actual measurement. Good comparison between the prediction and measurement is observed for both models, especially at the first few harmonics of the firing frequency.
|State||Published - 2015|
|Event||44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015 - San Francisco, United States|
Duration: Aug 9 2015 → Aug 12 2015
|Conference||44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015|
|Period||8/9/15 → 8/12/15|
Bibliographical notePublisher Copyright:
© 2015 by ASME.
ASJC Scopus subject areas
- Acoustics and Ultrasonics