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.

Advanced 3D Imaging Coupled to Modeling of Fuel Cell and Battery Electrodes

F. Tariq[1], V. Yufit[1], M. Marinescu[1], G. Cui[1], M. Kishimoto[1], N. Brandon[1]
[1]Imperial College London, London, United Kingdom

Solid Oxide Fuel Cells (SOFC) and Li-ion batteries (LIB) are electrochemical devices where performance is dependent on reactions inside porous electrode microstructures. Here we use tomographic techniques to probe 3D electrode structures (anodes and cathodes) at micro-nanometer length scales. Subsequently, micro/nano structural changes in electrodes are characterized and quantified. Utilizing ...

Analysis on Reaction Mechanism and Kinetics of CVD using COMSOL Multiphysics®

Yudai SUZUKI[1]

[1]The University of Tokyo, Tokyo, Japan

Chemical vapor deposition (CVD) is widely used in various fields including the fabrication of electronic devices due to its uniform film formation capability on the large-scale wafers and the minute 3D structures. In CVD, precursors (metal compounds) are commonly reacted in gas-phase as well as on the substrate to yield a film, and thereby it is rather difficult to reveal the reaction mechanism ...

3D Multiphysics Analyses to Support Low Enriched Uranium (LEU) Conversion of HFIR - new

P. K. Jain[1], J. D. Freels[1]
[1]Oak Ridge National Laboratory, Oak Ridge, TN, USA

Engineering design studies of the feasibility of conversion of the High Flux Isotope Reactor (HFIR) from high-enriched uranium to low-enriched uranium (LEU) fuel are ongoing at Oak Ridge National Laboratory as part of an effort sponsored by the U.S. Department of Energy’s Global Threat Reduction Initiative Reduced Enrichment for Research and Test Reactors program. COMSOL Multiphysics® models are ...

Modeling of Noise Produced by Offshore Wind Turbines with Different Foundations and Effects on the Marine Environment - new

B. Marmo [1], I. Roberts [1]
[1]Xi Engineering Consultants, Edinburgh, Scotland, UK

Vibration produced by offshore wind turbines during their normal operation transmits through the tower into the foundation where it interacts with the surrounding water and is released as noise. The noise produced by offshore wind turbines can be detected by fish and marine mammals and may lead to alteration of their behavior. Given that noise is emitted at the interface between the foundation ...

Simulations of Micropumps Based on Tilted Flexible Structures - new

M. J. Hancock[1], N. H. Elabbasi[1], M. C. Demirel[2]
[1]Veryst Engineering, LLC, Needham, MA, USA
[2]The Pennsylvania State University, University Park, PA, USA

Pumping liquids at small scales is challenging because of the principle of reversibility: in a viscous regime, the flow streamlines through a fixed geometry are the same regardless of flow direction. Recently we developed a class of microfluidic pump designs based on tilted flexible structures that combines the concepts of cilia (flexible elastic elements) and rectifiers (e.g., Tesla pump). We ...

Temperature and Acceleration Sensitivities of a Dual Cavity Fabry-Perot Interferometer - new

[1]R. K. Banyal
Indian Institute of Astrophysics, Bengaluru, Karnataka, India[1]

The numerical study of temperature and acceleration sensitivities of a dual cavity Fabry-Perot (FP) interferometer is carried out using finite element method. The optical cavities are formed by machining two side-by-side circular bore of 12 mm each on a monolithic block of low expansion material. One cavity will be used to generate broadband channel spectra for accurate wavelength calibration of ...

Dinâmica de Fluidos Reativos Para Deposição de Filmes Finos

F. F. Dall'Agnol [1]
[1] Universidade Federal de Santa Catarina, Blumenau, SC, Brasil

Graduado e doutor em Física pela USP de São Carlos. Foi professor colaborador pelo Departamento de Matemática na Universidade Federal de São Carlos e pelo Departamento de Física pela Universidade Estadual do Centro Oeste em Guarapuava. Foi pesquisador no Centro de Tecnologia da Informação Renato Archer, em Campinas, onde desenvolveu expertise em simulações computacionais com o uso do COMSOL ...

3D Simulation Of Fatty Acid Methyl Ester Production In A Packed Membrane Reactor

B. Sajjadi [1]
[1] University of Malaya, Malaysia

The current work is aimed to simulate the production of high quality fatty acid methyl ester (biodiesel) production from palm oil in a micro porous ceramic membrane reactor. The TiO2/Al2O3 ceramic membrane was used as the separator and catalytic bed. It was packed with potassium hydroxide catalyst supported on palm shell activated carbon. The investigation of component distribution within the ...

Analyzing the Influence of Electric Field on Flame Through  Electro-Hydrodynamics

S. Mitra[1], P. Sharma[2], M. Godbole[2], and M. Kumar KM[2]
[1] Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

[2] GE Global Research, Bangalore, Karnataka, India

The effects of electric fields on combustion flames have been studied by using several types of experimental techniques as well as few numerical methods. The flame is influenced by the electric field mainly due to the charges present as a result of chemical reactions that take place in the flame. From earlier experiments it was established that the electrical power required to do so is very less ...

Thin Membrane Modelling for the Electrical Stimulation of Auditory Nerve

A. Grünbaum[1], S. Petersen[1], H.W. Pau[2], and U. van Rienen[1]

[1]IEF funded by DFG Research Training Group 1505/1 Welisa, University of Rostock, Rostock, Germany
[2]Otolaryngology “Otto Körner”, University of Rostock, Rostock, Germany

Modeling of 2-5 μm thin membranes into a cochlea with a width of 2 cm is computationally. The paper is focused on two approximative methods used to overcome this problem and in addition a simple model challenging of a plate capacitor with a thin membrane of different thickness in-between is presented. The results of simulations with both thin layer approximation methods are compared with ...

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