Duct Acoustics
Fundamentals and Applications to Mufflers and Silencers

Understand topics ranging from the foundations of duct acoustics to acoustic design of mufflers and silencers with this hands-on reference.

Erkan Dokumac? (Author)

9781108840750, Cambridge University Press

Hardback, published 13 May 2021

550 pages
17.5 x 25 x 4 cm, 1.2 kg

foundations of duct acoustics to the acoustic design of duct systems, through practical modeling, optimization and measurement techniques. Discover in-depth analyses of one- and three-dimensional models of sound generation, propagation and radiation, as techniques for assembling acoustic models of duct systems from simpler components are described. Identify the weaknesses of mathematical models in use and improve them by measurement when needed. Cope with challenges in acoustic design, and improve understanding of the underlying physics, by using the tools described. An essential reference for engineers and researchers who work on the acoustics of fluid machinery ductworks.

Preface
1. Some preliminaries
2. Introduction to acoustic block diagrams
3. Transmission of low frequency sound waves in ducts
4. Transmission of one-dimensional waves in coupled ducts
5. Resonators, expansion chambers and silencers
6. Multi-modal sound propagation in ducts
7. Transmission of wave modes in coupled ducts
8. Effects of viscosity and thermal conductity
9. Reflection and radiation at open duct terminations
10. Modeling of ducted acoustic sources
11. Radiated sound pressure prediction
12. Measurement methods
13. System search and optimization
Appendix a: basic equations of fluid motion
Appendix b: acoustic properties of rigid-frame fibrous materials
References
Appendix c: impedance of compact apertures
Index.

Subject Areas: Mechanics of fluids [TGMF], Mechanics of solids [TGMD], Wave mechanics [vibration & acoustics PHDS], Fluid mechanics [PHDF]