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Acoustics and Vibrations

Application of a Weakly Non-Linear Analysis to the Analysis of Thermoacoustic Combustion Instabilities

D. Laera[1], S. M. Camporeale[1], G. Campa[2]
[1]Politecnico di Bari, Bari, Italy
[2]Ansaldo Energia, Genoa, Italy

The thermoacoustic combustion instabilities are complex phenomena that may occur in steady flow combustion ... 扩展阅读

Investigation of Mean-Flow Effects on Tubular Combustion Chamber Thermoacoustics Using a Burner Transfer Matrix Approach

A. Andreini[1], B. Facchini[1], A. Innocenti[1], D. Pampaloni[1]
[1]University of Florence, Florence, Italy

The paper presents a methodology to account for local mean-flow effects on thermo-acoustic instabilities to ... 扩展阅读

Efficient, Selective Piezoeletric Wave Transduction Using Interdigitated Electrodes

H. T. D. Grigg[1], T. H. Hanley[1], B. J. Gallacher[1]
[1]Newcastle University, Newcastle, Tyne and Wear, UK

This work enunciates the principles of SAW design from a physical perspective, examining the standard ... 扩展阅读

Support-Q Optimisation of a Trapped Mode Beam Resonator

T. H. Hanley[1], H. T. D. Grigg[1], B. J. Gallacher[1]
[1]Newcastle University, Newcastle-Upon-Tyne, UK

Introducing a disorder into a finite periodic oscillatory system induces the presence of a 'trapped mode': a ... 扩展阅读

Increasing Heat Transfer in Microchannels with Surface Acoustic Waves

S. Berry[1]
[1]Massachusetts Institute of Technology: Lincoln Laboratory, Lexington, MA, USA

In this numerical study, surface acoustic waves (SAWs) are evaluated as a potential disruptive flow ... 扩展阅读

Analysis of an Air Transparent Soundproof Window System & Comparisons to Physical Test Data

M. Yeoman[1], V. Sivasailam[1], A. Tomar[2]
[1]Continuum Blue Ltd., Ystrad Mynach, UK
[2]Jaguar Land Rover Ltd, Coventry, UK

The design of windows and or other perforated structures which allow the free flow of air into & out of a ... 扩展阅读

Finite Element Model for Simulating the Inspection of Steel Tubes Using Electromagnetic Acoustic Transducers

P. Sun[1], X. Ding[1], X. Wu[1], M. Cong[1]
[1]School of Mechanical Science & Engineering, Huazhong University of Science and Technology, Wuhan, China

Steel tubes are widely used in industries. In order to ensure the safety and reliability of industrial ... 扩展阅读

Numerical Study on the Acoustic Field of a Deviated Borehole with 2.5D Method

L. Liu[1], W.J. Lin[1], H.L. Zhang[1]
[1]State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing, China

In this paper, we use the PDE interface of COMSOL Multiphysics® software to implement the 2.5D frequency wave ... 扩展阅读

Near-Wall Dynamics of Microbubbles in an Acoustical Trap

L. Wright[1], G. Memoli[1], P. Jones[2], E. Stride[3]
[1]National Physical Laboratory, Teddington, UK
[2]University College London, London, UK
[3]University of Oxford, Oxford, UK

Understanding the interactions between microbubbles and surfaces is key to the successful deployment of ... 扩展阅读

Temperature Gradients Controlled Broadband Acoustic Omnidirectional Absorber

F. Qian[1], L. Quan[1], X. Liu[1]
[1]Institute of Acoustics and School of Physics, Nanjing University, Nanjing, China

Previous research into acoustic omnidirectional absorber (AOA) has shown the feasibility of forming acoustic ... 扩展阅读

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