Artigos Técnicos e Apresentações

Aqui você encontrará apresentações realizadas nas Conferências de Usuários COMSOL de todo o mundo. As apresentações englobam pesquisas e produtos inovadores feitas por engenheiros e cientistas usando o COMSOL Multiphysics. Os tópicos abramgem uma grande gama de indústrias e aplicações, como elétrica, mecânica, escoamento e química. Use a função de busca "Quick Search" para encontrar apresentações na sua área de interesse.

Parameter Identification in Partial Integro-Differential Equations for Physiologically Structured Populations

S. Moenickes, O. Richter, and K. Schmalstieg
Institut für Geoökologie, Abt. Umweltsystemanalyse, Technische Universität Braunschweig, Germany

Continuous dynamic models, e.g. COMSOL based simulations, play – besides statistical or iterative methods – a mayor role in theoretical ecology; in forecasting and management, but also in systems analysis. Ecological issues generally comprise highly interacting agents and/or unknown side effects. Here we show how combining direct simulation with COMSOL with simple optimization tools ...

Stress State Determination in Nanoelectronic Silicon Devices Coupling COMSOL Multiphysics and a Recursive Dynamical CBED Pattern Simulation

A. Spessot[1,2], S. Frabboni[1], A. Armigliato[3], and R. Balboni[3]
[1]Numonyx Advanced R&D NVMTD-FTM, Agrate Brianza, Italy
[2]National Research Center S3, CNR-INFM and Department of Physics, University of Modena e Reggio Emilia, Modena, Italy
[3]CNR-IMM Section of Bologna, Italy

Strained technology is being promoted as the best way to extend the performance of semiconductor transistors. An inhomogeneous layer deposited on top of a silicon device can induce a strong modification in the real silicon strain state, and consequently in its electronic performance. Coupling the finite elements analysis done by COMSOL with a recursive CBED and LACBED dynamical simulation, we are ...

Steady-state simulation of mono-valent ion distributions within a nanofluidic channel

W. Booth[1], J. Schiffbauer[1], J. Fernandez[2], K. Kelley[3], A. Timperman[3], and B. Edwards[1]

[1]Physics Department, West Virginia University, Morgantown, WV, USA
[2]Chemical Engineering Department, West Virginia University, Morgantown, WV, USA
[3]Chemistry Department, West Virginia University, Morgantown, WV, USA

The steady-state non-equilibrium distributions of two species of mono-valent ions around a charged nanofluidic channel have been examined. Large reservoirs were placed on either side of the nanoscale channel to simulate bulk concentration of ions in a fluid. Results from COMSOL Multiphysics simulations show that the effect of the potential bias across the nanochannel yields a significant ...

Finite Element Analysis of Multiconductor Interconnects in Multilayered Dielectric Media

S. Musa and M. Sadiku
College of Engineering, Prairie View A&M University, Prairie View, TX, USA

Due to the complexity of electromagnetic modeling, researchers and scientists always look for development of accurate and fast methods to extract the parameters of electronic interconnects and package structures. In this paper, we illustrate modeling of multiconductor interconnects in multilayered dielectric media using COMSOL Multiphysics and the finite element method. We specifically determine ...

Simulation of MEA in PEMFC and Interface of Nanometer-Sized Electrodes

Q. Zhang, Y. Liu, and S. Chen
Wuhan University, College of Chemistry and Molecular Science, Wuhan, China

COMSOL Multiphysics is a very helpful simulation software in our researches on both PEMFC and nanometer-sized electrodes. In the first part of our presentation, the influence of humidity and temperature to the performance of PEMFC are studied by simulating the MEA (membrane electrode assembly) in PEMFC. In the second part, models of different nanometer-sized electrodes, including spherical ...

Some Clinical and Computational Studies On Haemodynamics In Stenosed Artery

A. Chanda, A.R. Choudhury, G. Ray, K. Dasgupta, and D. Nag
Jadavpur University, Kolkata, West Bengal, India

Atherosclerosis in arteries is caused by the formation of stenosis : fatty depositions, on the artery wall. In current medicine, the practice is to observe the maximum percentage occlusion at any arbitrary cross-section and diagnose the patient on that basis, which might not always present the real picture due to non-uniformity of the stenosis thickness. The present work attempts to simulate the ...

Windows HPC Server 2008 R2 Goals and Overview

V.M. Srinivas
Technical Computing, Microsoft Corporation, India

A Mechanical Engineer from Madras University and an MBA from Symbiois Pune, Vinoo has been working in the Indian Enterprise and Technical Computing space for more than 10 years. He has been consulting customers for their Technical and High Performance Computing needs for the past 5 years. He has been involved in architecting some of the large HPC clusters in the country across Fundamental ...

Navier-Stokes Solutions for Flow and Transport in Realistic Porous Media

N. Abdussamie
American Bureau of Shipping, Tripoli, Libya

This paper illustrates how to set up and solve a two-dimensional flow problem having dimensions of 640 x 320 micro-meter using the Navier-Stokes equations with the help of COMSOL Multiphysics solver. The principle of our pore-scale modeling approach is composed of two steps. The first step involves the detailed identification and specification of the porous medium morphology, this step was ...

Expanding Your Materials Horizons

R.W. Pryor
Pryor Knowledge Systems, Inc., Bloomfield Hills, MI, USA

The concept of virtual prototyping can be found linked to many different keywords in the literature: modeling, look-ahead problem solving, etc. This poster paper briefly discusses the potential real benefits that can be realized through pre-build cost savings, minimization of the number of prototype builds, and post-build problem avoidance for physical prototypes and production products. Relative ...

Acoustic streaming flows in discharge lighting

T. Dreeben
Osram Sylvania, Beverly, MA, USA

Thomas Dreeben received his B.A. in Philosophy and Mathematics in 1985, and his Ph.D. in Mechanical Engineering in 1997, both from Cornell University. He has worked in automotive fuel systems at Ford Motor Company, and in turbulence at Sandia National Laboratories. He currently works in lighting research at OSRAM SYLVANIA, where his modeling focuses on fluid mechanics and heat transfer as they ...

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