CHAPTER 1 Basic equations of aeroacoustics
1.1 Sound sources in moving media
1.1.1 Basic equations o f sound propagation
1.1.2 Energy relations in moving media
1.1.3 Sound field ofmoving sound sources
1.1.4 Frequency features of moving sound sourcc Dopplcr effect
1.2 Generalized Green’s formula
1.3 Lighthill equation
1.3.1 Derivation of basic equations
1.3.2 Effect of solid boundary on sound generation
1.4 Ffowcs Williams.Hawkings equation
1.5 Generalized Lighthill’s equation
References
CHAPTER 2 Propeller noise：Prediction and control
2.1 Noise sources of propeller
2.1.1 An overvicw，the developing history of propeller noise prediction
2.1.2 Advanced propeller noise(Propfan noisc)
2.2 Propeller noise prediction in frequency—domain
2.2.1 The basic equations
2.2.2 Aerodynamic performance prediction
2.. The near-field solution of propeller noise
2.2.4 The far-field solution of propeller noise
. Propeller noise prediction in time—domain
..1 The basic equations
..2 The solution o f the free-space generalized wave equation
.. The fundamental integral formulas o f the sur face source in time-domain
..4 The integral expressions of the sound field due to monopoles and dipoles
..5 Introduction to numerical computation methods
References
CHAPTER 3 Noise prediction in aeroengine
3.1 Noise sources in aeroengine
3.2 Tone noise by rotor／stator interaction in fan compressor
3.2.1 Introduction
3.2.2 Model of sound generation by unstcady aerodynamic load on blade
3.. Prediction for tone noise by rotor／stator interaction
3.3 Shockwave noise in fan／compressor
3.3.1 Physical mechanism of shockwave noise in fan compressor
3.3.2 Shockwave noise prediction method
3.3.3 Power computation of shockwave noise
3.4 Combustion noise
3.5 Jet noise
3.5.1 Solution of Lighthill’S equation
3.5.2 Prediction ofjet noise
3.5.3 Effect of non-uniform flow Lilley’s equation References
CHAPTER 4 Linearized unsteady aerodynamics for aeroacoustic applications
4.1 IntrOductiOn
4.2 Basic linearized unsteady aerodynamic equations
4.2.1 Velocity decoing theorem for uniform flows
4.2.2 Disturbance velocity decoition in non-uni form flow fields：Goldstein’S equation
4.3 Unsteady loading for two—dimensional supersonic cascades with subsonic leading—edge locus
4.3.1 Physical and mathematical models
4.3.2 Discussion concerning the convergence of thc kernel function
4.3.3 Reflection coefficients of Mach waves and the solution of the integral equation
4.3.4 Comparison o f numerical solutions for unsteady blade loading
4.4 Lifting surface theory for unsteady analysis of fan／compressor cascade
4.4.1 A unifle faework for acoustic field and unsteady flow
4.4.2 Integral equation for the solution of unsteady blade load
4.4.3 Upwash velocity for three di fferent incomin onitions
4.4.4 Solution to the integral equation
4.4.5 Numerical validation of unsteady blade loading
References
CHAPTER 5 Vortex sound theory
5.1 Introduction tO sound generation induced by vortex flow
5.2 Basic equations of vortex sound
5.2.1 Powell’S equation
5.2.2 Howe’S acoustic analogy
5.. The equivalence of Curie’s equation and Howe’s equation
5.3 Vortex sound model of trailing edge noise
5.4 Vortex sound model of liner impedance
5.5 Effect of grazing flow on vortex-sound interaction of perforated plates
5.5.1 Effect of grazing flow on the acoustic impedance of perforated plates
5.5.2 Effect of plate thickness on impedance of perforated plates with bias flow
5.6 Nonlinear model of vortex.sound interaction
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