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Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Consultez les proceedings de la Conference COMSOL 2024

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Modeling of Piezoelectric Transducers Made of PZT for Energy Harvesting

J. Golebiowski [1], P. Bakolik [2],
[1] Lodz University of Technology, Department of Semiconductor and Optoelectronics Devices, Poland
[2] Lodz Univeristy of Technology, Poland

This work shows the results of modeling of piezoelectric transducers used to recover energy from mechanical vibrations. The analysis consists of usefulness of commercial ceramic PZT transducers to power electronic systems. Determined output load characteristics, characteristics of the ... En savoir plus

Simulation Using an Iterative Procedure to Account for Nonlinear Magnetic Properties of Steel

S. Barrez [1],
[1] Vallourec, Boulogne-Billancourt, France

In inductive heating simulations the electromagnetic properties of the steel have a significant impact on the temperature pattern along the heated product. Indeed, taking into account the non-linearity of the ferromagnetic material properties is a key point to have relevant simulation ... En savoir plus

Nature-Inspired Surfaces and Engineering Applications Using COMSOL Multiphysics®

R. C. Thiagarajan [1], P. Asutosh[1],
[1] ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, Karnataka, India.

Engineering design has long been dominated by orthogonal Cartesian principles. Nature inspired equation based mathematical surfaces are under renewed interest due to their innovative design potential and practical viability by 3D printing. In this paper, the parametric surface ... En savoir plus

Analysis & Design Optimization of Laterally Driven PolySilicon Electro-thermal Microgripper for Micro-objects Manipulation

T. Pahwa[1], S. Gupta[1], V. Bansal[1], R. Narwal[1], B. Prasad[1], D. Kumar[1]
[1]Electronic Science Department, Kurukshetra University, Kurukshetra, India

Micro-grippers find applications in micro-robotics, microsurgery, micro-fluidics, micro-relays, assembling and miniature medical instrumentation. Actuation principle involved may be electrothermal, electrostatic, piezoelectric, shape memory and electromagnetic. It has been found that ... En savoir plus

Prototype Probe Development for Liquid Injection Shutdown System Tube Gap Detection by Remote Field Pulsed Eddy Current Technique

T. V. Shyam[1], B. S. V. G. Sharma[1], J. N. Kayal[1]
[1]Bhabha Atomic Research Centre, Trombay, Mumbai, India

Pressurised Heavy Water Reactors (PHWR) play a prominent role in contributing power for the Nuclear Energy Programme in India. In 540MWe type PHWR reactors, there are horizontally placed Liquid Injection Shutdown System (LISS) tubes for injecting poison into the moderator to clamp down ... En savoir plus

COMSOL Multiphysics® Software as a Metasurfaces Design Tool for Plasmonic-Based Flat Lenses

B. Adomanis [1], D. B. Burckel [2], M. Marciniak [1],
[1] Air Force Institute of Technology, Wright-Patterson AFB, OH, USA
[2] Sandia National Laboratories, Albuquerque, NM, USA

Introduction: Flat lenses require precise control of a phase gradient across an interface, which is enabled through the application of engineered surfaces, such as Metasurfaces [1]. Periodic arrays of plasmonic antennas have been utilized to generate this desired phase gradient, which ... En savoir plus

Modeling, Simulation and Verification of Contactless Power Transfer Systems

J. Serrano [1], C. Carretero [1], J. Acero [1], I. Lope [1]
[1] University of Zaragoza, Zaragoza, Spain

This work presents the analysis of a wireless power transfer system consisting of two coupled coils and ferrite slabs acting as flux concentrators. The study makes use of Finite Element Method (FEM) simulations to predict the key performance indicators of the system such as coupling, ... En savoir plus

Simulation of a Microwave Applicator for the Treatment of Petroleum Emulsions

A. V. Vazquez [1, 2], P. M. G. Vite [3],
[1] Universidad Politécnica de Altamira, Altamira, Tamaulipas, México
[2] Universidad Tecnológica de Altamira, Altamira, Tamaulipas, México
[3] TEC/NM, Instituto Tecnológico de Ciudad Madero, Ciudad Madero, Tamaulipas, México

In Mexico there is a decline in the production of oil deposits due to the lack of effective treatment of oil emulsions, which generate a problem in the reinjection of emulsified water, transport of oil with high water content and corrosion in the oil refineries. Through the simulation ... En savoir plus

Study of Circular Waveguide Window for Millimeter Wave Transmission Line

K. D. Donda [1], R. Kumar [2], H. B. Pandya [2],
[1] Gujarat Technological University , Gandhinagar, India
[2] ITER-India (Institute for Plasma Research), Gandhinagar,India

Vacuum window is required in the millimeter wave transmission line in ITER*. It is to be designed to minimize the microwave reflection while keeping a robust and safe approach to meet the requirements. We have studied transmission characteristics of various dielectric materials over D ... En savoir plus

MRI Birdcage RF Coil Resonance with Uncertainty and Relative Error Convergence Rates

J. T. Fong [1],
[1] National Institute of Standards and Technology, Gaithersburg, MD, USA

In a magnetic resonance imaging (MRI) system, it is necessary to excite the nuclei of a patient into coherent precession for imaging. This requires a coupling between the nuclei and a source of radio frequency (RF) power using a transmitter. To receive a meaningful signal, we also need ... En savoir plus

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