科技论文和展示

这里您可以找到在全球 COMSOL 年会上所有用户报告的演示文稿。这些演示文稿介绍 COMSOL 用户是如何使用 COMSOL Multiphysics 进行创新性研究和产品设计。研究主题涵盖了包括电气、机械、流体和化工等范围广泛的行业和应用领域。请使用“快速搜索”来查找与您的研究领域相关的演示文稿。

Finite Element Analysis Approach for Optimization of Enzyme Activity for Enzymatic Bio-fuel Cell

Y. Song, and C. Wang
Florida International University, Miami, FL, USA

Enzymatic biofuel cells (EBFCs) are miniature, implantable power sources, which use enzymes as catalysts to perform redox reaction with biological fuels such as glucose. In this study using COMSOL Multiphysics, we use an EBFC chip, having three dimensional, highly dense micro-electrode arrays, fabricated by C-MEMS micro-fabrication techniques. Glucose oxidase (GOx) is immobilized on anodes for ...

FEA Simulation of Passive Ferrofluid Cooling Systems

Z. Fang[1,2], R. O'Handley[2], Y. Liu[2], and M. Yang[2,3]
[1]Pennsylvania State University, University Park, PA, USA
[2]Ferro Solutions Inc., Woburn, MA, USA
[3]Massachusetts Institute of Technology, Cambridge, MA, USA

Here we investigate a promising passive cooling method through making advantage of the unique properties of ferrofluid. When a magnetic dipole or a permanent magnet is put at the hot side of a system, it will attract the cold ferrofluid to the hot place and displace the hot ferrofluid since cold ferrofluid below Tc has much stronger magnetization than that of hot ferrofluid above Tc. Then the hot ...

A Virtual Pharmacokinetic Model Of A Human Eye

L. Murtomäki, and S. Kotha
University of Helsinki, Centre for Drug Research, Helsinki, Finland

Drug therapy of the posterior part of an eye is very challenging. Yet, in USA alone, there are almost 2 million people affected by age related macular degeneration. When designing a strategy for controlled-release drug delivery, it is important to take into account of physiology, absorption, distribution, metabolism, and excretion properties of a drug. Therefore, the aims of this study are: 1) to ...

Solid State Transport of Reactive Charged Particles: Application to Metal Oxidation

P. Buttin[1], B. Malki[1], P. Barberis[2], and B. Baroux[1]
[1]SIMAP/groupe SIR, CNRS, France
[2]AREVA - AREVA NP - CEZUS Research Center, France

This paper studies multicomponent transport through zirconia, assuming a chemical reaction involving electrons and oxygen vacancies defects. Classically, according to the Wagner theory for ambipolar diffusion, the electroneutrality condition in the oxide is considered. Therefore three constraints must be satisfied on the transport problem: oxide stoichiometry, electroneutrality and the source ...

A Flexible Scheme For Numerical Homogenisation In Linear Elasticity

A. Gerisch[1], S. Tiburtius[1], Q. Grimal[2], and K. Raum[3]
[1]Technische Universität Darmstadt, Germany
[2]Université Pierre et Marie Curie Paris VI, France
[3]Charité-Universitätsmedizin Berlin, Germany

Musculoskeletal mineralised tissues (MMTs), like bone or tendon, are a prime example of naturally occuring, hierarchically structured material. They display a great variety in mechanical function but are all based on essentially the same building block: the mineralised collagen fibril (100 nanometer in diameter). This building block is arranged in various spatial structures across many length ...

COMSOL Modelling of a Planar Micro Ion Mobility Spectrometer

R. Cumeras, I. Gràcia, E. Figueras, L. Fonseca, J. Santander, M. Salleras, C. Calaza, N. Sabaté, and C. Cané
Instituto de Microelectrónica de Barcelona, Barcelona, Spain

A micro Planar Ion Mobility Spectrometer (P-FAIMS) has been simulated using multiphysics software. In P-FAIMS target ions are discriminated by the application of the proper separation voltages to the electrodes of the system. Modelling of vapour phase ions of two compounds have been studied for different values of electric field amplitude to gas number density (E/N) ratio: a health risky volatile ...

Acoustic Attenuation Performance Of Helicoidal Resonator Due To Distance Change From Different Cross-Sectional Elements Of Cylindrical Duct

W. Łapka
Poznań University of Technology, Poznań, Poland

This work presents acoustic attenuation performance of helicoidal resonator due to distance change from different cross-sectional elements of cylindrical duct. The helicoidal resonator properties are described mainly in in infinite long cylindrical duct. For practical applications it is important to know the limits of use of this solution. This paper describes how the helicoidal resonator should ...

Super-resolution Properties of the Maxwell Fish-Eye

D. Grabovickic, J. C. Gonzalez, J. C. Miñano, and P. Benitez
CEDINT
Universidad Politecnica de Madrid
Madrid, Spain

In this paper we present an analysis that shows the Maxwell Fish Eye (MFE) only has super-resolution property for some particular frequencies (for other frequencies, the MFE behaves as conventional imaging lens). These frequencies are directly connected with the Schumann resonance frequencies of spherical symmetric systems. The analysis have been done using a thin spherical waveguide (two ...

The Soil as Bioreactor: Reaction-diffusion Processes and Biofilms

M. Richter[1], S. Moenickes[2], O. Richter[2], T. Schröder[1]
[1]BASF SE, Agricultural Center, Limburgerhof, Germany
[2]Institute of Geoecology, TU Braunschweig, Braunschweig, Germany

In a soil pore, water flows through the biofilm, where the density of the latter was assumed to represent a flow resistance. This mechanism was implemented as a local change of fluid viscosity proportional to local biofilm density. It was assumed that diffusive substrate transport is possible through the biofilm region such that the biofilm was able to degrade the substance. Maximum flow ...

Using Optical Flow Tracing of MRI Flow Artifacts to Validate CFD Findings

R. H. Lauridsen, S. Ringgaard, and S. Alberg Thrysøe
MR-Center
Aarhus University Hospital
Aarhus, Denmark

The aim of this study is to use tracking of flow artifacts in Magnetic Resonance Imaging of fluids to validate CFD. Phase Contrast MRI will also be used for comparison. The correlation between flow of the fluid and movement of the artifacts is investigated using an aorta flow phantom, which is modeled from a human aorta and printed in thermo plastic. An Optical Flow algorithm is used to track ...

Quick Search

3161 - 3170 of 3609 First | < Previous | Next > | Last