研究開発におけるマルチフィジックスシミュレーションの具体例

さまざまな業界のエンジニア, 研究者, 科学者がマルチフィジックスシミュレーションを使用して革新的な製品の設計とプロセスを研究および開発しています. COMSOL カンファレンスで発表したテクニカルペーパーやプレゼンテーションからインスピレーションを得てください. 以下の選択項目を参照するか, クイック検索ツールを使用して特定のプレゼンテーションを検索するか, アプリケーション領域でフィルタリングします.


COMSOL コンファレンス 2020 論文集を見る

Acoustics and Vibrationsx

Dynamic Analysis of a Roller Compacted Concrete Dam

H. Diaz-Alvarez [1], L. De Jesus-Diaz [1], M. H. McKenna [1],
[1] U.S. Army Engineer Research and Development Center, Vicksburg, MS, USA

The U.S. Army Engineer Research and Development Center (ERDC) is currently exploring the use of infrasound sensors to monitor the health of structures of interest. Infrasound is acoustic energy below 20 Hz and is capable of propagating many kilometers from the source with little ... 詳細を見る

Calculation of the Helmholtz Resonator Using COMSOL® in an Acoustic Lecture

Y. Koike [1], M. Hashiguchi [2], D. Mi [2],
[1] Department of Electronic Engineering, College of Engineering, Shibaura Institute of Technology, Koto, Tokyo, Japan
[2] Engineer Division 1, Keisoku Engineering System Co., Ltd., Chiyoda-ku, Tokyo, Japan

In the field of electronic, electro-acoustic apparatus is one of the important applications. There is an acoustic class in the department of electronic engineering, Shibaura Institute of Technology. The class is “Acoustic systems” which opens in 2nd semester of 3rd year. To foster the ... 詳細を見る

Effect of Duty Cycle Variation on Acoustic Pressure Field Simulation in an Ultrasound Bioreactor

A. Rahimi [1], J. Crapps [1], N. Case [1]
[1] Biomedical Engineering, Saint Louis University, Saint Louis, MO, USA

Daily application of a low intensity pulsed ultrasound (LIPUS) regimen has been shown to have positive effects on bone fracture healing. Although LIPUS treatment can induce cellular responses supporting bone repair, the underlying mechanisms are not well understood. Further in vitro ... 詳細を見る

Augmentor Combustion Instability with the COMSOL Multiphysics® software

V. G. Shaw [1], J. D. Clabbers [1], E. J. Gutmark [1],
[1] University of Cincinnati, Cincinnati, OH, USA

Combustion instability has been a serious issue through the developmental history of gas turbine augmentors. When heat release rate oscillations occur in phase with resonant chamber acoustic modes, a feedback cycle is formed in which the strength of local heat release rate and chamber ... 詳細を見る

Active Control of MEMS Resonator Parameters via Electromechanical Feedback

M. Hodjat-Shamami [1], F. Ayazi [1],
[1] Georgia Institute of Technology, Atlanta, GA, USA

MEMS resonators have been recently adopted in a wide variety of timing, sensing, and actuation applications. The ability to control the dynamics of resonance, namely the resonance frequency and quality factor of these resonators is crucial in achieving high precision performance within ... 詳細を見る

Modal Analysis of Rotating Machines

C. Frankrone [1], L. Fromme [1],
[1] Department of Engineering Sciences and Mathematics, Bielefeld University of Applied Sciences, Bielefeld, Germany

Machines with rotating components are prone to vibrations because an imbalance of the rotor would always act as a harmonic excitation force to the machine. Thus oscillations close to the natural frequencies are tried to pass through fast in the run-up and cast-down or even completely ... 詳細を見る

Study of a Loudspeaker in a Vehicle Door

M. K. Bogdanski [1], F. Malbos [2], M. Strauss [1],
[1] Harman Becker Automotive Systems, VPDT, Straubing, Germany
[2] Harman France, VPDT, Paris, France

COMSOL Multiphysics® was used to evaluate the performance of a woofer coupled to an automotive door. Two uses cases were considered: rigid and non-rigid door structures. Using the Structural Mechanics Module, the speaker membrane displacement was computed for both cases from 20Hz to 500 ... 詳細を見る

Near-Field of Resonating Piezoelectric Membrane Used as Ultrasound Transducer

V. Tzanov [1], J. Munoz [1], F. Torres [1], N. Barniol [1],
[1] Universitat Autonoma de Barcelona, Bellaterra, Spain

Micro-machined ultrasound transducers have a wide range of applications. As a sensor or actuator they can be used for measuring fluid speed and direction, to mix and excite particles (sonication), for taking images (ultrasonography), for non-destructive testing and many other purposes in ... 詳細を見る

Keep it Simple and Learn More - On a Stationary Study of a Time-Dependent Problem

B. Baumann [1], J. Schwieger [1, 2], U. Stein [1], M. Wolff [1],
[1] Hamburg University of Applied Sciences, Hamburg, Germany
[2] University of the West of Scotland, Paisley Campus, United Kingdom

Today’s driver hardware for High-intensity discharge (HID) lamps is bulky, expensive and not particularly energy-efficient. A downscaling of the devices seems possible by increasing the operation frequency from typically 400 Hz to some hundred kilohertz. However, efforts to design high ... 詳細を見る

Transient Vacuum and High Pressure Generation by Focused Acoustic Waves

R. Eisenschmid [1],
[1] OPTIMA pharma GmbH, Schwaebisch Hall, Germany

Amplitude of acoustic waves can be magnified by conical or concave waveguides, like in ear trumpets or fjords (surface waves). The simplest way realizing a capable device is a conical waveguide with a target to be treated in the top of the cone, and a spherical actor or acoustic exciter ... 詳細を見る