A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material
Joint Authors
Onorati, A.
Fairbrother, R.
Montenegro, G.
Della Torre, A.
Source
Advances in Acoustics and Vibration
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-01-14
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Increasing demands on the capabilities of engine thermo-fluid dynamic simulation and the ability to accurately predict both performance and acoustics have led to the development of several approaches, ranging from fully 3D to simplified 1D models.
The quasi-3D approach is proposed as a compromise between the time-demanding 3D CFD analysis and the fast 1D approach; it allows to model the acoustics of intake and exhaust system components, used in internal combustion engines, resorting to a 3D network of 0D cells.
Due to its 3D nature, the model predicts high-order modes, improving the accuracy at high frequencies with respect to conventional plane-wave approaches.
The conservation equations of mass and energy are solved at cell centers, whereas the momentum equation is applied to cell connections including specific source term to account for the of sound-absorbing materials and perforated elements.
The quasi-3D approach has been validated by comparing the predicted transmission loss to measured data for a number of standard configurations typical of internal combustion engine exhaust systems: a reverse-flow chamber and series chambers with perforates and resistive material.
American Psychological Association (APA)
Montenegro, G.& Della Torre, A.& Onorati, A.& Fairbrother, R.. 2013. A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material. Advances in Acoustics and Vibration،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-480341
Modern Language Association (MLA)
Montenegro, G.…[et al.]. A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material. Advances in Acoustics and Vibration No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-480341
American Medical Association (AMA)
Montenegro, G.& Della Torre, A.& Onorati, A.& Fairbrother, R.. A Nonlinear Quasi-3D Approach for the Modeling of Mufflers with Perforated Elements and Sound-Absorbing Material. Advances in Acoustics and Vibration. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-480341
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480341