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Acoustics and Vibrations

Bloch Waves in an Infinite, Periodically-perforated Sheet

W. Maysenhölder[1]
[1]Fraunhofer Institute for Building Physics, Stuttgart, Germany

Bloch waves in infinite periodic structures – much in vogue in the present metamaterial age – can be ... 扩展阅读

Simulating Acoustic Combustion Chamber Eigenmodes to Facilitate Combustion Stability in Rocket Engines

R. Kaess [1], J. Braun [1],
[1] Airbus Safran Launchers, Ottobrunn, Germany

Airbus Safran Launchers is the market leader in Space Launch services. Rocket engines are among the most ... 扩展阅读

Piezoelectric Surface Acoustic Wave (SAW) Device with Simulated Poling Condition

R. Xu [1], M. Guizzetti [1], K. Astafiev [1], E. Ringgaard [1], T. Zawada [1],
[1] Meggitt A/S, Kvistgaard, Denmark

FEM (Finite Element Method) modelling software such as COMSOL Multiphysics® can be a powerful tool for ... 扩展阅读

Modeling of Near-Field Ultrasonic Levitation: Resolving Viscous and Acoustic Effects

I .F. Melikhov [1], A. S. Amosov [1], S. A. Chivilikhin [2],
[1] Corning Scientific Center, Saint Petersburg, Russia
[2] ITMO University, Saint Petersburg, Russia

Ultrasonic levitation is a novel technology for contactless handing of various objects. It is already used in ... 扩展阅读

Development of a Package for a Triaxial High-G Accelerometer Optimized for High Signal Fidelity

R. Langkemper [1], R. Külls [1], J. Wilde [2], S. Nau [1], S. Schopferer [1],
[1] Fraunhofer-Institut für Kurzzeitdynamik, Ernst-Mach-Institut, EMI, Freiburg, Germany
[2] Albert-Ludwigs-Universität Freiburg, Institut für Mikrosystemtechnik, Freiburg, Germany

Acceleration is an important quantity to be measured in high-speed dynamics. A new piezoresistive sensor for ... 扩展阅读

Virtual Commissioning of Large Machines with COMSOL Multiphysics® Software

K. Kryniski [1], A. Trangard [1],
[1] ABB Corporate Research, Västerås, Sweden

In addition to using advanced functions built-into the engine of the COMSOL Multiphysics® software, we ... 扩展阅读

Acoustic Scattering through a Circular Orifice in Low Mach Number Flow

S. Sack [1], M. Abom [1]
[1] KTH, the Royal Institute of Technology, Stockholm, Sweden

The acoustic scattering through a circular orifice plate in a duct with low Mach number flow (M=0.1) is ... 扩展阅读

Simulation of Pearl-Chain Formation of Microparticles by Acoustic Standing Waves, including Inter-Particle Forces and Collisions

T. Baasch [1], J. Dual [1],
[1] ETH Zurich, Insitute for Mechanical Systems, Zurich, Switzerland

Acoustic standing waves can be used to manipulate micrometer sized particles, cells and organisms. In most ... 扩展阅读

Numerical Analysis of an Ultrasonic Technology for Food Dehydration Intensification

R. R. Andres [1], E. Riera [1],
[1] Grupo de Sistemas y Tecnologías Ultrasónicas (GSTU), ITEFI, CSIC, Madrid, Spain

Food dehydration processes assisted by high-power ultrasound (HPU) have become an efficient technology with a ... 扩展阅读

Modeling the Effect of a Crack on the Flow-Induced Vibration of Supported Pipes

J. H. Lee [1], S. M. Al-Said [2],
[1] American University of Sharjah, Sharjah, United Arab Emirates
[2] Jordan University of Science and Technology, Irbid, Jordan

In this paper, the effect of a crack to the flow-induced vibration characteristics of supported pipes is ... 扩展阅读

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