Application of the Wave Based Technique to Predict the Engine Noise Radiation Under anechoic Conditions

Achim Hepberger; Hans-Herwig Priebsch; Franz Diwoky; Harald Pramberger

doi:10.4271/2009-01-2211

Application of the Wave Based Technique to Predict the Engine Noise Radiation Under anechoic Conditions

Achim Hepberger, Hans-Herwig Priebsch, Franz Diwoky, Harald Pramberger

Virtual Vehicle Research GmbH (ViF) (98830)

Research output: Contribution to journal › Article › peer-review

Abstract

As an alternative to the element based methods, recently a wave based technique (WBT) has been developed. Since it is based on the indirect Trefftz approach, exact solutions of the governing differential equation are used to approximate the dynamic field
variables. This paper discusses the extensions of the WBT for the analysis of engine noise radiation problems in 3 dimensions under anechoic conditions. Furthermore, necessary extensions of shape functions, numerical integration and a methodology to create a WBT radiation models are described. The performance of the method compared to a commercial BEM solution is demonstrated with a real engine example.

Original language	English
Pages (from-to)	1477 - 1486
Journal	SAE International Journal of Passenger Cars - Mechanical Systems
Volume	2
Issue number	1
DOIs	https://doi.org/10.4271/2009-01-2211
Publication status	Published - 2009
Event	SAE 2009 Noise and Vibration Conference and Exhibition: NVC 2009 - St. Charles, United States Duration: 19 May 2009 → 19 May 2009

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abstract = "As an alternative to the element based methods, recently a wave based technique (WBT) has been developed. Since it is based on the indirect Trefftz approach, exact solutions of the governing differential equation are used to approximate the dynamic fieldvariables. This paper discusses the extensions of the WBT for the analysis of engine noise radiation problems in 3 dimensions under anechoic conditions. Furthermore, necessary extensions of shape functions, numerical integration and a methodology to create a WBT radiation models are described. The performance of the method compared to a commercial BEM solution is demonstrated with a real engine example.",

author = "Achim Hepberger and Hans-Herwig Priebsch and Franz Diwoky and Harald Pramberger",

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AU - Pramberger, Harald

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AB - As an alternative to the element based methods, recently a wave based technique (WBT) has been developed. Since it is based on the indirect Trefftz approach, exact solutions of the governing differential equation are used to approximate the dynamic fieldvariables. This paper discusses the extensions of the WBT for the analysis of engine noise radiation problems in 3 dimensions under anechoic conditions. Furthermore, necessary extensions of shape functions, numerical integration and a methodology to create a WBT radiation models are described. The performance of the method compared to a commercial BEM solution is demonstrated with a real engine example.

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ER -

Application of the Wave Based Technique to Predict the Engine Noise Radiation Under anechoic Conditions

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