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Acoustics and Vibrations

Acoustic Pitfalls of Impedance Tube Measurements

T. Graf[1]
[1]Lucerne University of Applied Sciences, Switzerland

The impedance tube is commonly used to characterize sound absorbing material. In order to obtain reliable ... 扩展阅读

Design and Optimization of a Multi-Purpose, High-Power Ultrasonic Reactor

l. spicci[1]
[1]Everywave Srl, Italy

Many industrial applications require special treatments for fluid products, such as: deagglomeration, ... 扩展阅读

Optimization of the acoustic pressure distribution inside a freeze drying chamber

R. Andrés García[1], E. Riera[2]
[1]Grupo de Sistemas y Tecnologías Ultrasónicas (GSTU), ITEFI, CSIC, Spain
[2]Grupo de Sistemas y Tecnologías Ultrasónicas (GSTU), ITEFI, CSIC; Madrid, España, Spain

IntroductionThe application of power ultrasounds in food dehydration processes have shown a good performance ... 扩展阅读

Numerical Optimization of the Ultrasonic Cleaning Technique for Pipelines

H. Lais[1], J. Kanfoud[1], T. Gan[2]
[1]Brunel Innovation Centre, United Kingdom
[2]TWI Ltd., United Kingdom

Fouling accumulation in pipelines is a known problem in industry which is currently treated by mechanical, ... 扩展阅读

The Acoustics of 3D Kelvin Foam Cell Geometries Based on Thermoviscous Acoustic Fluid Modelling

B. Semeniuk[1], P. Göransson[2]
[1]KTH Royal Institute of Technology, Department of Aeronautical & Vehicle Engineering, Sweden
[2]KTH Royal Institute of Technology, Department of Aeronautical & Vehicle Engineering, MWL, Sweden

In a continuation of our previous work on the modelling of the dynamic microstructural viscous and thermal ... 扩展阅读

Combining Image-Based Solutions with COMSOL Multiphysics® Simulations

D. Harman[1]
[1]Synopsys Simpleware, United Kingdom

Models generated from 3D image data (such as MRI or CT) are used in COMSOL Multiphysics® to analyse real ... 扩展阅读

Simulation of an AlN PMUT With A Crossed-Slit for Enhanced Acoustic Pressure Outputs in Liquids

V. Tzanov[1], E. Ledesma[1], F. Torres[1], N. Barniol[1]
[1]Universitat Autonoma de Barcelona, Spain

In our work, simulations of a piezoelectrical micromachined ultrasonic transducer compatible with CMOS-MEMS ... 扩展阅读

Ultrasound Scattering from a Rigid Sphere Using the Discontinuous Galerkin Method in the Time-Explicit Domain

D. Rubinetti[1], D. Weiss[1], E. Weingartner[2], M. Lenner[3]
[1]Institute of Thermal and Fluid Engineering, University of Applied Sciences and Arts Northwestern Switzerland, Switzerland
[2]Institute of Sensors and Electronics, University of Applied Sciences and Arts Northwestern Switzerland, Switzerland
[3]ABB Switzerland Ltd, Switzerland

Ultrasound technology is deployed in a variety of scientific and engineering applications, ranging from the ... 扩展阅读

FEM Simulation in Loudspeakers Design: Focus on Mechanical and Acoustic-Structural Analysis

G. Spatafora[1], E. Capucci[1], C. Corsini[1], R. Toppi[1]
[1]Faital Spa, Italy

Finite Element simulations are becoming an increasingly powerful tool in the transducer design process. The ... 扩展阅读

Time Domain Prediction of a Microperforated Plate Absorber Using the Finite Element Based Numerical Model

M. Hossain[1], A. McKay[1], E. Ross[1], G. Bennett[1]
[1]Trinity College Dublin, Ireland

There is an increasing number of applications that requires using the time-dependent analysis of finite ... 扩展阅读

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