Book contents
- Duct Acoustics
- Duct Acoustics
- Copyright page
- Dedication
- Contents
- 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 Conductivity
- 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
- Book part
- Index
- References
8 - Effects of Viscosity and Thermal Conductivity
Published online by Cambridge University Press: 11 May 2021
Book contents
- Duct Acoustics
- Duct Acoustics
- Copyright page
- Dedication
- Contents
- 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 Conductivity
- 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
- Book part
- Index
- References
Summary
In Chapters 3 to 7, the fluid is assumed to be inviscid. Effects of the viscosity and thermal conductivity of the fluid are considered in this chapter. The analysis is based on the low-reduced frequency theory and includes applications to catalytic converter and particulate filters.
- Type
- Chapter
- Information
- Duct AcousticsFundamentals and Applications to Mufflers and Silencers, pp. 369 - 398Publisher: Cambridge University PressPrint publication year: 2021
References
Pierce, A.D., Acoustics: An Introduction to Its Physical Principles and Applications, (New York: McGraw-Hill, 1981).Google Scholar
Kirchhoff, G., Üeber den Einfluss der Wärmelettung in einem Gase auf dir Schallbewegung, Annalen der Physik 134 (1868), 177–193 (English translation in R.B. Lindsay, Ed., Benchmark Papers in Acoustics: Physical Acoustic, (Pennsylvania: Dowden, Hutchinson and Ross Inc., 1974).Google Scholar
Tijdeman, H., On the propagation of sound in cylindrical tubes, J. Sound Vib. 39 (1975), 1–33.Google Scholar
Stinson, M.R., The propagation of plane sound waves in narrow and wide circular tubes and generalization to uniform tubes of arbitrary cross-sectional shape, J. Acoust. Soc. Am. 89 (1991), 550–558.Google Scholar
Dokumaci, E., On the effect of viscosity and thermal conductivity on sound propagation in ducts: a re-visit to the classical theory with extensions for higher order modes and presence of mean flow, J. Sound Vib. 333 (2014), 5583–5599.Google Scholar
Bruneau, M., Herzog, Ph., Kergomard, J. and Polack, J.D., General formulation of the dispersion equation in bounded viscothermal fluid and applications to some simple geometries, Wave Motion 11 (1989), 441–451.Google Scholar
Astley, R.J. and Cummings, A., Wave propagation in catalytic converters: formulation of the problem and finite element solution scheme, J. Sound Vib. 188 (1995), 635–657.Google Scholar
Dokumaci, E., Sound transmission in narrow pipes with superimposed uniform mean flow and acoustic modeling of automobile catalytic converters, J. Sound Vib. 182 (1995), 799–808.Google Scholar
Aurégan, Y., Pachebat, M. and Pagneux, V., Hydrodynamic modes in pipes with superimposed mean flow and viscothermal effects, J. Sound Vib. 218 (1998), 735–740.CrossRefGoogle Scholar
Dokumaci, E., A note on transmission of sound in a wide pipe with mean flow and viscothermal attenuation, J. Sound Vib. 208 (1997), 653–655.Google Scholar
Peat, K.S., A first approximation to the effects of mean flow on sound propagation through cylindrical capillary tubes, J. Sound Vib. 175 (1994), 475–489.Google Scholar
Jeong, K.-W. and Ih, J.-G., A numerical study on the propagation of sound through capillary tubes with mean flow, J. Sound Vib. 198 (1996), 67–79.CrossRefGoogle Scholar
Allam, S. and Ǻbom, M., Investigation of damping and radiation using full plane wave decomposition in ducts. J. Sound Vib. 292 (2006), 519–534.CrossRefGoogle Scholar
Dokumaci, E., On transmission of sound in circular and rectangular narrow pipes with superimposed mean flow, J. Sound Vib. 210 (1998), 375–389.Google Scholar
Dokumaci, E., On the effect of viscosity and thermal conductivity on sound power transmitted in uniform circular ducts, J. Sound Vib. 363 (2016), 560–570.CrossRefGoogle Scholar
Peat, K.S., Acoustic wave motion along a narrow duct with a temperature gradient, Acoustica 84 (1998), 57–65.Google Scholar
Dokumaci, E., An approximate dispersion equation for sound waves in a pipe with ambient gradients, J. Sound Vib. 240 (2001), 607–646.Google Scholar
Knutsson, M. and Åbom, M., Acoustic modeling of charge air coolers, J. Vib. Acoust. 139 (2017), 1–9.Google Scholar
Allam, S. and Åbom, M., Sound propagation in an array of narrow porous channels with application to diesel particulate filters, J. Sound Vib. 291 (2006), 882–901.Google Scholar