Technical Papers and Presentations

Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Finite Element Analysis of Curved Cone Corrugated Ground Plane Conical Antenna

R. Sharma, and A. Marwaha
SLIET, Longowal, Sangrur
Punjab, India

Curved cone corrugated ground plane conical antenna has been designed and analyzed using Finite Element Method. In this paper, we introduce a novel Curved cone corrugated ground plane conical antenna for ultra-wideband (UWB) applications. The antenna is composed of curved cone with narrow corrugation on finite ground plane and fed by a 50? coaxial cable. The designed antenna operates over ...

High Frequency Electromagnetic Device Modeling with COMSOL: Simulation vs. Experiment

P. Alotto[1], F. Dughiero[1], F. Bressan[1], M. Bullo[1]
[1]Università di Padova, Dipartimento di Ingegneria Industriale, Padova, Italy

Computer simulation is mandatory for the optimization of electromagnetic devices. Here we concentrate on two classes of devices operating in the MHz and GHz range, namely microwave ovens and TEM cells for electromagnetic compatibility testing. In particular we concentrate on the issue that numerical results are usually different from the experimental ones and this can be due, among others ...

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 ...

A finite–element simulation study of the complex effective permittivity of two-phase random composite materials

Brosseau, C.
Laboratoire d'Electronique et Systèmes de Télécommunications, Université de Bretagne Occidentale, Brest, France

In the current work we introduce a finite-element method (FEM) for calculating the effective permittivity of macroscopically inhomogeneous media. Specifically, we consider two-dimensional (2d) two-phase heterostructures consisting of hard circular disk equilibrated distributions. The hard-disk distribution has been chosen as the reference system since it is one of the simplest idealized models ...

A finite–element simulation study of the complex effective permittivity of two-phase random composite materials

Brosseau, C.
Laboratoire d'Electronique et Systèmes de Télécommunications, Université de Bretagne Occidentale, Brest, France

In the current work we introduce a finite-element method (FEM) for calculating the effective permittivity of macroscopically inhomogeneous media. Specifically, we consider two-dimensional (2d) two-phase heterostructures consisting of hard circular disk equilibrated distributions. The hard-disk distribution has been chosen as the reference system since it is one of the simplest idealized models ...

Microwave Heating of Chemical Reaction System with Complex Permittivity

M. Hashiguchi
Keisoku Engineering System Co., Ltd., Tokyo, Japan

Heating mechanism of reactive system under microwave irradiation is computationally studied. TE10 incident wave (2.45GHz and 500W) through a rectangular waveguide and a one step global reaction, A+B=>C, are considered here. It is assumed that the reactants A and B have a complex permittivity and the product C has only real part of permittivity. The governing equations are solved by using COMSOL ...

Propagation of Higher Order Modes in Optical Fibers

J.T. Andrews, R.R. Kumar, and P.K. Sen
Department of Applied Physics, S G S Institute Technology & Science, Indore, Maharashtra, India

Understanding higher order mode generation in optical fibers has the following advantages: (i) Supercontinuum generation is possible (ii) Various fiber optic sensors may have increased sensitivity and (iii) dispersion management as well as optimization is possible with appropriate control of higher order modes. We took simple cases where single mode and multimode fibers (SMF/MMF) are used. ...

Design Optimization of Slotted Waveguide Antenna Stiffened Structures (SWASS)

T. Ha, and R.A. Canfield
Virginia Polytechnic Institute and State University, Blacksburg, VA, US

Design optimization of slotted waveguide antenna stiffened structures (SWASS) is described. SWASS is a multidisciplinary blending of RF slotted waveguide technology and stiffened composite structures technology. Structural analysis and radio frequency (RF) analysis are integrated. A hat-type stiffened panel is modeled to meet the structure and RF requirements. We are motivated by the potential of ...

Pulsed Power Accelerator Design with COMSOL Multiphysics® Software - new

D. Reisman[1]
[1]Sandia National Laboratories, Albuquerque, NM, USA

We have developed Thor: a pulsed power accelerator for performing dynamic material experiments. The design was aided by using the COMSOL Multiphysics® software with the AC/DC Module and RF Module. Our design process involved optimizing the impedance of the system while maintaining a good margin against electrical breakdown. By using a three-dimensional electromagnetic model of the entire power ...

Microwave Heating Simulation of Frozen Pie - new

F. Chen[1], T. Gulati[1], H. Zhu[1], A. K. Datta[1]
[1]Cornell University, Ithaca, NY, USA

This research studies the thermal effect of frozen pie heating in the microwave oven. Considering as composite material, the properties of pie derived based on its composition. Here the package, susceptor’s influence to the temperature distribution is also studied.

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