Presentazioni e Articoli Tecnici

In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Effects of the Film Thickness on the Transient Conjugate Opticalthermal Fields in Thin Films Irradiated by Moving Sources in Back and Front Treatments

N. Bianco[1], O. Manca[2], S.Nardini[2], and D. Ricci[2]

[1]DETEC, Università degli Studi di Napoli Federico II, Napoli, Italy
[2]DIAM, Seconda Università degli Studi di Napoli, Aversa, CE, Italy

A two dimensional transient analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. Thermal and optical nonlinearity is induced during transient heating, since the response of weakly absorbing thin films depends on temperature. The heat ...

Investigation of Fluid Structure Interaction of an Elastic Membrane in a Microchannel

S. Moondra, A. Upadhyay, and S.K. Mitra
Indian Institute of Technology, Bombay

Numerical simulation of flow through a two dimensional Micro-channel with an embedded elastic structure is studied in this paper. A parametric study for different geometries is conducted to study the effect of elasticity of the structure and viscosity of the fluid on the maximum bending moment, maximum shear stress developed in the structure, and the maximum displacement of the tip of the ...

Numerical Study of Microfluidic Fuel Cell Performance

A. E. Khabbazi[1], A.J. Richards[1], and M. Hoorfar[1]
[1]School of Engineering, UBC Okanagan, Kelowna, BC Canada, Canada

Using COMSOL Multiphysics 3.5, a numerical model has been developed to determine the effect of the channel geometry and electrode configuration on cell performance based on polarization curves. The Butler-Volmer equation was implemented to determine the reaction rates at the electrodes. The Conductive Media DC module is used to model the electric fields within the fuel cell.

Expanding Your Materials Horizons

R. Pryor[1]
[1]Pryor Knowledge Systems, Inc. (COMSOL Certified Consultant), Bloomfield Hills, Michigan, USA

Materials and their related properties are intrinsically fundamental to the creation, development and solution of viable exploratory models when using numerical analysis software. In many cases, simply determining the location, availability and relative accuracy of the necessary material parameters for the physical behavior of even commonly employed design materials can be very difficult and time ...

Wireless Interaction of Neighboring Two Arm Archimedes Spiral Coils in the RF Electromagnet Range

A. Kalinowski[1]
[1]Naval Undersea Warfare Center/ Division Newport, Newport, RI, USA

The paper addresses a class of problems for modeling and consequently simulating the electromagnetic field radiation pattern from two arms Archimedes spiral coils. The frequency spatial wavelengths relative to the coil dimensions are in a range where the electromagnetic Maxwell’s equations are solved numerically via the RF Module of COMSOL ...

Improved Temperature Standards Using COMSOL Multiphysics

J.V. Pearce
National Physical Laboratory, Teddington, Middlesex

This paper describes the use of COMSOL Multiphysics to evaluate the propagation of the liquid-solid interface in fixed point crucibles, and the resulting temperature distribution throughout the system as the phase transition progresses. This enables a robust identification of the features of the melting curve corresponding to physical phenomena such as the liquidus point, and also enhances the ...

Deep Desulfurization of Diesel Using a Single-Phase Micro-Reactor

G. Jovonavic[1], J. Jones[1], and A. Yokochi[1]
[1]School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, Oregon, USA

This paper describes the benefits of computational fluid dynamics in the development of a microreactor used in the desulfurization of aromatic compounds. It is crucial to verify diffusion and extinction coefficients to ensure accurate simulation results prior to experiments. COMSOL Multiphysics was used to model the behavior of all of the possible species present and reactions that may occur.

Coupled Models of Lithospheric Flexure and Magma Chamber Pressurization at Large Volcanoes on Venus

G. Galgana[1], P. McGovern[2], and E. Grosfils[2]

[1]Lunar and Planetary Institute, Houston, Texas, USA
[2]Pomona College, Claremont, California, USA

We present an implementation of the Structural Mechanics module of COMSOL Multiphysics to model the state of stress associated with the emplacement of large volcanic edifices on the surface of a planet. These finite element models capture two essential physical processes: (1) Elastic flexure of the lithosphere beneath the edifice load, and (2) Pressurization of a magma-filled chamber that serves ...

Heat Transfer Models for Microwave Thawing Applications

S. Curet, O. Rouaud, and L. Boillereaux
ENITIAA, GEPEA – UMR, Nantes

This study deals with numerical and experimental investigations of a microwave thawing process. The microwave power generation is calculated from Maxwell’s equations and then from Lambert’s law, using COMSOL Multiphysics. For those two different approaches, the heat source term depends on the dielectric properties of the material. Numerical simulations are compared with experimental ...

Störwirkungsanalyse transienter elektromagnetischer Feldimpulse auf integrierte Schaltungen

S. Korte, and H. Garbe
Universität Hannover, Institut für Grundlagen der Elektrotechnik und Messtechnik, Hannover

Dieses Paper zeigt Untersuchungen zum Zerstörverhalten elektronischer Logikbauelemente bei Beaufschlagung mit elektromagnetischen Feldimpulsen (EMP). Es wird zunächst generell auf den Prozess der Einkopplung transienter Feldverläufe in elektronische Systeme eingegangen. Daraus werden die für eine spätere Simulation benötigten Störsignale innerhalb der Systeme abgeleitet und analytisch ...

Quick Search

2661 - 2670 of 3644 First | < Previous | Next > | Last