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.

Simulation of Surface Stress Effect on Mechanical Behaviour of Silicon Microcantilever

A. Ricci, E. Giuri, and C. Ricciardi

Microcantilevers made of crystal silicon are probably the most diffused type of MEMS because of their simple fabrication and their vast applications. In this presentation we treat the mechanical behaviour of silicon mirocantilevers, and also give an overview of the many application areas that these apply to.

Optimization of BCP Processing of Elliptical Nb SRF Cavities

C. Boffo[1], C. Cooper[1], G. Galasso[2], and A. Rowe[1]
[1] FNAL, Batavia, IL 60510, U.S.A.
[2] Università degli Studi di Udine

Buffer chemical polishing is a cheap, simple and effective processing technique for single grain high gradient and polycrystalline lower gradient cavities. This paper describes the thermal-fluid finite element model adopted to simulate the process, the experimental flow visualization tests performed to verify the simulation and a novel device fabricated to solve the problem.

Thermal and Velocity Field Analysis Inside an Historical Building - The Hall of the Two Hundred

C. Balocco
Energy Engineering Department, Firenze

For museums and the like, the indoor climatic conditions should preserve the exhibited works of art and ensure comfort conditions for people visiting or working inside them. The present paper concerns a primary study of the Hall of the Two Hundred of the Old Palace in Florence. General 3D modeling principles were used, which can be applied to many situations where there is interaction ...

A Model for Tubular Solid Oxide Fuel Cells

C. Ciano
Politecnico di Torino

In this paper, a model of a tubular fuel cell is proposed and includes thermo-fluid dynamics, chemical reactions and electrochemistry. The main results presented are the temperature distribution, the concentration of species and the polarization curves.

Modeling and Simulation in Bio-Electronics

M. Longaretti, G. Marino, and R. Sacco
Politecnico di Milano

In this communication, we deal with the numerical simulation of Voltage Operated ionic Channels (VOC) in Bio-Electronics. Suitable functional iteration techniques for problem decoupling and finite element methods for discretization are proposed and discussed. Model and computational procedures are validated in the simulation of a real-life VOC under several working conditions.

Reactor Design Improvements for a Propane Autothermal Reformer by Simulation of Momentum Flow

F. Cipitì, L. Pino, A. Vita, M. Laganà, and V. Recupero
CNR-ITAE, Messina

The paper presents a two-dimensional model to describe the gas flow in a propane autothermal reactor, developed at the CNR-ITAE Institute, and aimed to design a Beta 5 kWe hydrogen generator, named HYGen II, to be used with Polymer Electrolyte Fuel Cells (PEFCs) for residential applications. The main aim of the mathematical model was to optimize the reactor geometrical key parameters (diameter ...

Influence of Geometry on Mixing in a Passive Micromixer

E. Giuri, A. Ricci, and C. Ricciardi
Laboratorio di Technologie Elettrobiochimiche Miniaturizzate per l'Anilisi e la Ricerca, Politechnico di Torino

Finite Element Method simulations of microstructure behaviour is carried out by COMSOL. This enables us to make also technological considerations related to the easy way of fabrication and to lower production costs as explained in the following slide.

Simulation and Analysis of Foods Fluid Dynamic Behaviour during Filling Processes

E. Bottani, R. Rizzo, and G. Vignali
Università degli Studi di Parma

This research presents a model describing the behavior of fluids during a septic filling processes. Numerical simulations were performed to investigate the laminar flow and rheological behavior of shear thinning and Newtonian fluids in 3-dimensional steady state and time-dependent configurations. The mass and momentum balance equations were solved with the finite element method using ...

Thermal Dissipation of DIMM Modules in a Tower-BTX Configuration

G. Sorge, G. Cammarata, and G. Petrone
University of Catania

In this paper we study the natural convection for Dual In-Line Memory Module (DIMM) systems. Numerical models are developed using COMSOL Multiphysics. The results, obtained for imposed ambient temperature and operative conditions (power supplied to the CPUs) were produced and complex fluid motion field could be detected.

Combined Transfer Phenomena in 3D Modeling of Packaged Foods

M.V. De Bonis[1,2], G. Altieri[2], and G. Ruocco[1,2]
[1] CFDfood
[2] DITEC, Università degli studi della Basilicata, Potenza

Heat and mass transfer can be analyzed for conditions that may limit shelf-life. With this target, the purpose of the present work is the development of a general model which is applicable to a large variety of packaging configurations, food products and environmental conditions. To this end, COMSOL Multiphysics is exploited in a full 3D geometry.

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