技術情報とプレゼンテーション

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 Chemotractant Gradients in Microfluidic Channels to Study Cell Migration Mechanism in Silico

P. Wallin[1], E. Bernson[1], J. Gold[1]
[1]Chalmers University of Technology, Applied Physics, Biological Physics, Gothenburg, Sweden

Cell migration of endothelial cells along gradients is an important process in vivo and an interesting target for cancer therapeutics. Microfluidics offer very powerful tools to study such migration processes in detail in the lab. In this study, we describe a model to simulate molecular gradients in a diffusion based microfluidic gradient generator and how a cell senses these gradients via cell ...

Thermal Simulations of a LED Light Using COMSOL Multiphysics

M. Maaspuro[1]
[1]University of Turku, Turku, FInland

An experimental LED light composed of a multi-chip LED-module, a LED driver and an efficient heat sink, was investigated using COMSOL Multiphysics software and the Heat Transfer Module. In an LED light heat is mainly generated in the LEDs but some amount of heat is generated also in the LED driver. The main target of the simulations was to resolve the junction temperatures of LEDs, the most ...

COMSOL Analysis of Acoustic Streaming and Microparticle Acoustophoresis

H. Bruus[1], P.B. Muller[1], R. Barnkob[1], M.J.H. Jensen[2]
[1]Technical University of Denmark, Kongens Lyngby, Denmark
[2]COMSOL, Kongens Lyngby, Denmark

We have simulated the ultrasound-induced acoustophoretic motion of microparticles suspended in an aqueous solution. The full first-order thermoviscous acoustics equations have been implented on a rectangular microfluidic 2D domain excited with an ultrasound field tuned to resonance near 2 MHz. The micrometer-thin but crucial viscous boundary layers at the rigid walls have been fully resolved. The ...

Simulation of Impact Damage in a Composite Plate and Its Detection

V. Pavelko[1], I. Pavelko[1], M. Smolyaninovs[1], H. Pffeifer[2], M. Wevers[2]
[1]Riga Technical University, Riga, Latvia
[2]Catholic University Leuven, Leuven, Belgium

A problem of damage prediction in aircraft structure and its non-destructive evaluation is very important for aircraft structural health assessment. The analysis of the features of direct impact of thin-walled laminate component of aircraft was performed by COMSOL Multiphysics software. Mainly the GFRC and CFRC laminates were selected in form either thin separate plate or sandwich structure. The ...

Simulation of Piezoelectric Transformers with COMSOL

T. Andersen[1], M. A. E. Andersen[1], O. C. Thomsen[1]
[1]DTU Elektro, Technical University of Denmark, Kgs. Lyngby, Denmark

In this work COMSOL is utilized to obtain the Mason lumped parameter model for a piezoelectric transformer (PT) design. The Mason lumped parameters are relevant in the design process of power converters. The magnitude of the impedance is simulated for a specific interleaved multilayer thickness mode PT. The PT design has been prototyped and the measurements results are compared with simulations. ...

A Parametric Study on the Dynamic Behavior of Cable Supported Bridges Under Moving Loads Affected by Accidental Failure Mechanisms

P. Lonetti[1], A. Pascuzzo[1], R. Sarubbo[1]
[1]Department of Structural Engineering, University of Calabria, Rende, Cosenza, Italy

The dynamic behavior of cable supported bridges subjected to moving loads and affected by corrosion and accidental failure mechanism in the cable suspension system is investigated. The different types of cable supported bridges are distinctively characterized by the configuration of the cable system [1]. The suspension system comprises a parabolic main cable and vertical hanger cables connecting ...

Multiphysics Modeling of Warm-Air Drying of Potatoes Slices

S. Sandoval Torres[1], A. de Lourdes Allier González[1], L.L. Méndez Lagunas[1]
[1]Instituto Politécnico Nacional, CIIDIR, Oaxaca, Mexico

In this work we solve a model to simulate the drying of potatoes slices. The model considers both the transport of free and vapor water by applying a mechanistic approach. The critical moisture point (CMP) was considered, since it is a transition zone and it represents the point where water saturation is near from cero and hygroscopic domain begins. The CMP divides the hygroscopic and ...

Investigation of Hydraulic Fracture Re-Orientation Effects in Tight Gas Reservoirs

B. Hagemann[1], J. Wegner[1], L. Ganzer[1]
[1]Clausthal University of Technology, Clausthal-Zellerfeld, Germany

In tight gas formations where the low matrix permeability prevents successful and economic production rates, hydraulic fracturing is required to produce a well at economic rates. As production from the well and its initial fracture declines, re-fracturing treatments are required to accelerate recovery. The orientation of the following hydraulic fracture depends on the actual stress-state of the ...

Electromagnetic Characterization of Big Aperture Magnet Used in Particle Beam Cancer Treatment

J. Osorio Moreno[1], M. Pullia[1], C. Priano[1]
[1]Fondazione CNAO, Pavia, Italy

Resistive magnets are one of the principal components of ion medical accelerator systems used in heavy ion cancer treatment. To fulfill medical requirements, like the size of irradiation field and an uniform dose distribution, some magnets of the transport beam line may require large aperture and a large region where the magnetic field is within specifications (good field region). After a ...

Fracture-Matrix Flow Partitioning and Cross Flow: Numerical Modeling of Laboratory Fractured Core Flood

R. Sanaee[1], G.F. Oluyemi[1], M. Hossain[1], B.M. Oyeneyin[1]
[1]Robert Gordon University, Aberdeen, United Kingdom

The contrast between hydro-mechanical behavior of the rock matrix and fracture network systems results in flow partitioning between fracture and matrix systems which is affected by the In-situ stress regime. Fracture flow, Darcy law and free and porous media flow physics interfaces of COMSOL were used in simulating a fractured core flooding test to achieve a better understanding of flow ...

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