The relevance of simulation methods for the analysis of exterior noise in the automotive industry is likely to increase for several reasons in the coming years. In the past, the high computational resources needed prevented the application of deterministic simulation methods to exterior noise. Today, this difficulty is partially overcome, thanks to the increase of the available computational power. So now it can be useful to re-assess the capabilities of deterministic simulation methods in relation to exterior noise. This article describes a comparison between different deterministic methods in relation to the simulation of the exterior ATFs of a simplified - but not trivial - vehicle engine bay mock-up up to 3.5 kHz. The BE method, the PML method and the IE method have been considered. The performance of these three methods is analyzed in terms of results quality and computational power needed. In previously published articles, only results obtained by BE and PML methods had been compared. Here the results obtained by the Infinite Elements method enrich the simulation database. Special attention is devoted to this method and its advantages and drawbacks in comparison with the other two.
Comparative analysis of different deterministic methods for the simulation of exterior noise acoustic transfer functions
G Miccoli;
2013
Abstract
The relevance of simulation methods for the analysis of exterior noise in the automotive industry is likely to increase for several reasons in the coming years. In the past, the high computational resources needed prevented the application of deterministic simulation methods to exterior noise. Today, this difficulty is partially overcome, thanks to the increase of the available computational power. So now it can be useful to re-assess the capabilities of deterministic simulation methods in relation to exterior noise. This article describes a comparison between different deterministic methods in relation to the simulation of the exterior ATFs of a simplified - but not trivial - vehicle engine bay mock-up up to 3.5 kHz. The BE method, the PML method and the IE method have been considered. The performance of these three methods is analyzed in terms of results quality and computational power needed. In previously published articles, only results obtained by BE and PML methods had been compared. Here the results obtained by the Infinite Elements method enrich the simulation database. Special attention is devoted to this method and its advantages and drawbacks in comparison with the other two.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
