The purpose of this paper is to clarify mechanism of the relation between exhaust pulsating flow and radiation noise,and developing simulation technology based on the fact of these phenomena. The simulation takes into account fluid flow pulsation,aero-acoustic noise sources, flow induced structural vibration as well as noise radiation in the far field. All those phenomena are directly calculated in a fully coupled manner. By applying measured values at the model inflow, accurate radiation noise from the exhaust system is obtained. Locations of noise sources as well as mechanisms of noise generation are clarified. The method enables the investigation of exhaust noise radiation at early development stages.
Relation Between Exhaust Pulsating Flow and Radiation Noise: Development of Exhaust Radiation Noise Simulation Technology
Sae Technical Papers
SAE 2004 World Congress & Exhibition ; 2004
2004-03-08
Conference paper
English
British Library Conference Proceedings | 2004
|Automotive engineering | 2004
|British Library Conference Proceedings | 2004
|Noise radiation of a strongly pulsating tailpipe exhaust
Online Contents | 1993
|Development of the Exhaust System Radiation Noise Simulation Technology Using Exhaust Pulsation
British Library Online Contents | 2002
|