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Suchbegriff:

A Computational Study on Thermal Conductivity Measurements of High Temperature Liquid Materials

X. Ye[1], R. W. Hyers[1]
[1]Department of Mechanical & Industrial Engineering, University of Massachusetts - Amherst, Amherst, MA, USA

Accurate thermo-physical properties of materials are valuable for both scientific research and industrial applications. For high temperature liquid materials, two issues exclude traditional methods: elevated reactivity of test material and experimental apparatus, uncontrolled heat ... Mehr lesen

Radiation Force Effect at the Dielectric Water-Air Interface

G. V. B. Lukasievicz[1], N. G. C. Astrath[2], L. C. Malacarne[2], M. L. Baesso[2], S. E. Bialkowski[3]
[1]Universidade Tecnológica Federal do Paraná, Toledo, PR, Brazil
[2]Universidade Estadual de Maringá, Maringá, PR, Brazil
[3]Utah State University, Logan, Utah, USA

The radiation force effects on the surface displacement can be calculated by solving the Navier-Stokes equation with appropriated boundary conditions. The surface deformation can be described by the radiation pressure as well as those forces due to gravity and surface tension. We used ... Mehr lesen

通过平面外的转动模控制弹性超材料板的弯曲刚度

Yun Lai [1], Jinjie Shi [2],
[1] National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, Jiangsu, People’s Republic of China
[2] College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, Jiangsu, People’s Republic of China

In this work, we investigate the resonant properties of finite-sized membrane-mass-type elastic metamaterial thin plates. We find that the effective bending stiffness of such metamaterial thin plates can be controlled independently by the out-of-plane rotational resonances, so as to vary ... Mehr lesen

From Music to Non-Invasive Therapies via COMSOL Multiphysics® Models

E. Lacatus[1], G. C. Alecu[2], A. Tudor[2], M. A. Sopronyi[3]
[1]Polytechnic University of Bucharest, Bucharest, Romania
[2]Student-Polytechnic University of Bucharest, Bucharest, Romania
[3]INFLPR -National Institute for Laser Plasma and Radiation Physics, Bucharest, Romania

Vibration and music therapies are non-invasive treatments having effective results although their basics are still disputed. By the application of COMSOL Multiphysics® software for modeling and analysis, some of the nonlinear physical phenomena laying on these applications may be ... Mehr lesen

Maximizing the Fatigue Crack Response in Surface Eddy Current Inspections of Aircraft Structures

C. Mandache [1], T. Theodoulidis [2],
[1] National Research Council Canada, Ottawa, ON, Canada
[2] University of Western Macedonia, Kozani, Western Macedonia, Greece

In-service detection of fatigue cracking in metallic aerospace structures relies on capable and efficient eddy current inspection procedures. For best results, inspections with surface scanning eddy current techniques are following rigorous procedures that indicate the instrument ... Mehr lesen

Improved Understanding on Collection of Airborne Particles by Permanent Magnetic Assembly

M. Cheng [1], B. L. Murphy [1], G. M. Ludtka [1], P. Cable-Dunlap [1],
[1] Oak Ridge National Laboratory, Oak Ridge, TN, USA

Magnetic nanoparticles have diverse applications ranging from contamination control to medical diagnosis and treatment. Small airborne particulate matter (PM) is known to have adverse impacts to human health,, due to its high mobility when penetrating human respiratory systems [1,2,3]. ... Mehr lesen

Multiphysics Modeling of the Graphite Electrode Joint in Electric Arc Furnaces for Steel Recycling

N. May [1], M. Waldner [2],
[1] GrafTech International Holdings, Inc., Independence, OH, USA
[2] Case Western Reserve University, Cleveland, OH, USA

Electric Arc Furnaces (EAF) use graphite electrodes to strike an arc to melt scrap steel, recycling it for further use. These graphite electrodes oxidize and are consumed over time. To maintain operation new electrodes are attached to others via a joint of complex geometry and fed ... Mehr lesen

Simulation of Diffuse Optical Tomography using COMSOL Multiphysics®

S. A. M. Kirmani [1] , L. Velmanickam [1], D. Nawarathna [1], S. S. Sherif [2], I. T. Lima Jr. [1],
[1] Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA
[2] Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB, Canada

We show that COMSOL Multiphysics® software can efficiently simulate the diffusion equation (DE) in diffusive optical tomography systems. Using our implementation, we simulate a frequency domain diffusive optical tomography system two order of magnitude faster than the standard Monte ... Mehr lesen

Prediction of Transformer Core Noise

R. Haettel[1], A. Daneryd[1], M. Kavasoglu[1], C. Ploetner[2]
[1]ABB Corporate Research, Västerås, Sweden
[2]ABB Transformers, Varennes, QC, Canada

Today, low noise is a mandatory feature for power transformers to comply with customer specifications and environmental regulations. Therefore, it is crucial to develop sound prediction tools with sufficient accuracy to avoid overkill margins in design and costly modifications after ... Mehr lesen

Tri-Axial Square Helmholtz Coils System to Generate Uniform Magnetic Field Volume

A. F. Restrepo[1], E. Franco[1], C. R. Pinedo[1]
[1]Universidad del Valle, Cali, Valle del Cauca, Colombia

The study of the effects of magnetic field stimulation in biological systems require devices capable of generating homogenous magnetic fields and further guarantee a controlled and repeatable exposure to different samples involved in the experiment [1]. This work presents analysis and ... Mehr lesen

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