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 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 ...

Use of COMSOL Multiphysics in the Modeling of Ion Source Extraction

M. Cavenago
Laboratori Nazionali di Legnaro

A two dimensional description of plasma charged sheath and ion extraction, including the complete plasma sheath equation, is proposed and reduced to a system of coupled fields, implemented with use of COMSOL Multiphysics. A separate application of the weak form to the Hamilton-Jacobi and Poisson equations is also described, using five coupled fields.

Coupling of Catalytic Endothermic and Exothermic Reactions by CPR

S. Vaccaro, G. Ferrazzano, and P. Ciambelli
Università di Salerno

Mathematical modelling of a catalytic plate reactor for methane steam reforming with COMSOL Multiphysics was carried out. The model reactor includes three channels where methane combustion occurs on the plates bordering the inner side of the outermost channels, whereas methane steam reforming takes place on the plates bordering the central channel.

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 FEM Analysis of Transport Phenomena occurring during Vegetable Drying

S. Curcio
University of Calabria

The aim of the present work is the formulation of a theoretical model describing the transport phenomena involved in a food drying process by a convective oven. The proposed model represents a general and predictive tool capable of describing the real oven’s behavior over a wide range of process and fluid-dynamic conditions. The resulting system of non-linear unsteady-state partial ...

Simulation of Electromagnetic Stirrers and Brakes Applied in the Metallurgical Field

C. Mapelli
Politecnico di Milano

The control of the flux within continuous casting systems used in the metallurgical field can be obtained through the application of electromagnetic. The model here has been solved through a linear time-harmonic solver. The results of the electromagnetic model have then been applied to the fluid-mechanics model through volume Lorentz forces.

Numerical Simulation of RTD in Contact Tanks with COMSOL Multiphysics

C. Gualtieri
University of Napoli

The objective of this paper is to present the results of a numerical study undertaken to investigate the hydrodynamics and turbulent transport and mixing inside two contact tanks, which have the same channels but different location of the baffles. Transient concentration data were used to derive the residence time distribution (RTD) function for both tanks in order to evaluate and compare ...

Low Frequency Analysis of Small Rooms by Means of a Finite Element Model

P. Bonfiglio, and A. Farnetani
Università degli Studi di Ferrara

The main object of this paper is the determination of the impulse response, in the low frequency range, for calculating the reverberation time and the energetic parameters in this space. An absorbing material is modelled by using the propagation of sound waves in an equivalent fluid. The results of this Finite Element model are compared with experimental measurements of impulse responses ...

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.

Numerical Simulation of the Heat Transfer and Elastic Dynamics of Nanodisk Arrays in Pump-Probe Laser Experiments

B. Revaz[1,2], C. Giannetti[2], F. Banfi[1], M. Montagnese[3], G. Ferrini[2], and F. Parmigiani[3,4]
[1] University of Geneva, Switzerland
[2] Università Cattolica del Sacro Cuore, Brescia
[3] Università degli Studi di Trieste
[4]Sincrotrone Trieste, I-34012 Basovizza, Trieste

We present in this paper, numerical simulations of the heat transfer and elastic dynamics of permalloy nanodisks on crystalline Si. The goal of this work is to simulate recent pump-probe laser experimental results obtained in our laboratory.

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