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|Additional Physical Format:||Print version:
Acoustics of Ducts and Mufflers.
Hoboken : Wiley, ©2014
|Material Type:||Document, Internet resource|
|Document Type:||Internet Resource, Computer File|
|All Authors / Contributors:||
M L Munjal
|Notes:||3.11.1 Three-Duct Cross-Flow Expansion Chamber Element.|
|Description:||1 online resource (417 pages)|
|Contents:||Preface; 1. Propagation of Waves in Ducts; 1.1 Plane Waves in an Inviscid Stationary Medium; 1.2 Three-Dimensional Waves in an Inviscid Stationary Medium; 1.2.1 Rectangular Ducts; 1.2.2 Circular Ducts; 1.3 Waves in a Viscous Stationary Medium; 1.4 Plane Waves in an Inviscid Moving Medium; 1.5 Three-Dimensional Waves in an Inviscid Moving Medium; 1.6 One-Dimensional Waves in a Viscous Moving Medium; 1.7 Waves in Ducts with Compliant Walls (Dissipative Ducts); 1.7.1 Rectangular Duct with Locally Reacting Lining; 1.7.2 Circular Duct with Locally Reacting Lining. 1.7.3 Rectangular Duct with Bulk Reacting Lining1.7.4 Circular Duct with Bulk Reacting Lining; 1.8 Three-Dimensional Waves along Elliptical Ducts; References; 2. Theory of Acoustic Filters; 2.1 Units for the Measurement of Sound; 2.2 Uniform Tube; 2.3 Radiation Impedance; 2.4 Reflection Coefficient at an Open End; 2.5 A Lumped Inertance; 2.6 A Lumped Compliance; 2.7 End Correction; 2.8 Electroacoustic Analogies; 2.9 Electrical Circuit Representation of an Acoustic System; 2.10 Acoustical Filter Performance Parameters; 2.10.1 Insertion Loss, IL; 2.10.2 Transmission Loss, TL. 2.10.3 Level Difference, LD2.10.4 Comparison of the Three Performance Parameters; 2.11 Lumped-Element Representations of a Tube; 2.12 Simple Area Discontinuities; 2.13 Gradual Area Changes; 2.13.1 Conical Tube; 2.13.2 Exponential Tube; 2.13.3 Elliptical Tube; 2.14 Extended-Tube Resonators; 2.15 Helmholtz Resonator; 2.16 Concentric Hole-Cavity Resonator; 2.17 An Illustration of the Classical Method of Filter Evaluation; 2.18 The Transfer Matrix Method; 2.18.1 De.nition of Transfer Matrix; 2.18.2 Transfer Matrix of a Uniform Tube; 2.18.3 A General Method for Derivation of Transfer Matrix. 2.18.4 Transfer Matrices of Lumped Elements2.18.5 Transfer Matrices of Variable Area Tubes; 2.18.6 Overall Transfer Matrix of the System; 2.18.7 Evaluation of TL in Terms of the Four-Pole Parameters; 2.19 TL of a Simple Expansion Chamber Muffler; 2.20 An Algebraic Algorithm for Tubular Mufflers; 2.20.1 Development of the Algorithm; 2.20.2 Formal Enunciation and Illustration of the Algorithm; 2.21 Synthesis Criteria for Low-Pass Acoustic Filters; References; 3. Flow-Acoustic Analysis of Cascaded-Element Mufflers; 3.1 The Exhaust Process; 3.2 Finite Amplitude Wave Effects. 3.3 Mean Flow and Acoustic Energy Flux3.4 Aeroacoustic State Variables; 3.5 Aeroacoustic Radiation; 3.6 Insertion Loss; 3.7 Transfer Matrices for Tubular Elements; 3.7.1 Uniform Tube; 3.7.2 Extended-Tube Elements; 3.7.3 Simple Area Discontinuities; 3.7.4 Physical Behavior of Area Discontinuities; 3.8 Perforated Elements with Two Interacting Ducts; 3.8.1 Concentric-Tube Resonator; 3.8.2 Cross-Flow Expansion Element; 3.8.3 Cross-Flow Contraction Element; 3.8.4 Some Remarks; 3.9 Acoustic Impedance of Perforates; 3.10 Matrizant Approach; 3.11 Perforated Elements with Three Interacting Ducts.|