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.

Fluid Flow and Heat Transfer Characteristics in a Stirred Cell System for Crude Oil Fouling

M. Yang[1], A. Young[1], and B. Crittenden[1]

[1]Department of Chemical Engineering University of Bath, Bath, United Kingdom

A small batch stirred cell which is operated at temperatures up to 400 °C and pressures up to 30 bar is used to study fouling behaviors of selected crude oils. COMSOL Multiphysics package is used for the CFD (Computational Fluid Dynamics) and heat transfer modeling for this stirred cell system. The simulation results are validated against the measured temperature data at various axial ...

Study of an Electroacoustic Absorber

A-S. Moreau[1], H. Lissek[1], and R. Boulandet[1]
[1]EPFL-STI-IEL-LEMA, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

In this paper, the underlying concept of electroacoustic absorbers is studied with the help of Comsol Multiphysics® Acoustics Module. Among the different ways to obtain variable acoustic properties on an electroacoustic transducer's voicing face, there is the shunting of the transducer's electrical input. With such shunt devices, the acoustic impedance that the transducer's membrane presents ...

Analog to Digital Microfluidic Converter

R. Dufour [1], C. Wu[1], F. Bendriaa[1], V. Thomy[1], and V. Senez[1]
[1]BioMEMS Group, IEMN, University of Lille Nord de France, Villeneuve d’Ascq, France

This paper presents an Analog to Digital Microfluidic Converter (ADMC) using passive valves and enabling the conversion of a continuous liquid flow into droplets for Electro-Wetting On Dielectric (EWOD) actuation. Valves calibration, geometry characteristics and losses reduction have been optimized using microfluidic application mode of COMSOL Multiphysics®.

Structural Mechanics of Cooling Catheters

M. Pavelchak, J. Urcinas, and T. Merrill
Rowan University, Glassboro, NJ, USA

This paper describes the use of structural mechanics capabilities within COMSOL to explore new cooling catheter designs. Cooling catheters may be used to save ischemic tissue resulting from strokes or heart attacks. Typical guide catheters use metallic braiding to ensure torsional strength. Braiding, however, displaces space for flows and limits design options. To explore alternatives to ...

The use of COMSOL for Building Constructions Engineering Regarding Heat and Moisture Transport

H. Schellen, A. van Schijndel, and P. Briggen
Eindhoven University of Technology, Eindhoven, Netherlands

Hunting Lodge St. Hubertus is one of the most prominent Dutch buildings from the early twentieth century. An extensive study of wind and wind-driven rain (WDR) was conducted to provide insight into the moisture load of the building facade, using measurements and CFD simulations. COMSOL Multiphysics was also used for modeling the moisture transport through the walls of the tower. The model ...

Field-Circuit Coupling Applied to Inductive Fault Current Limiters

D. Lahaye[1], D. Cvoric[2], S. de Haan[2], and J. Ferreira[2]
[1]Delft Institute of Applied Mathematics, Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands
[2]Electrical Power Processing Unit Department of Electrical Engineering, Mathematics and Computer Sciences, TU Delft, The Netherlands

Fault Current Limiters (FCLs) are expected to play an important role in the protection of future power systems due to the rising levels of the short-circuit currents. The inductive FCLs, comprising magnetic cores and one or more dc and ac windings, are particularly interesting because they inherently react on the fault. The so-called open-core FCL configuration employs only one magnetic core for ...

Modeling of III-Nitride Quantum Wells with Arbitrary Crystallographic Orientation for Nitride-Based Photonics

M. Kisin, R. Brown, and H. El-Ghoroury

Ostendo Technologies, Inc., Carlsbad, CA, USA

A program for self-consistent modeling of electron-hole energy spectrum and space-charge distribution in III-nitride based quantum well (QW) structures has been developed. The model takes into consideration full 6-band description of the valence band states, nonparabolicity of the electron spectrum, quantum confinement of electrons and holes, strain induced modifications of the band structure, ...

Probe Type Permanent Magnet Flowmeter

V. Sharma, S. Narmadha, S.K. Dash, R. Veerasamy, B.K. Nashine, K.K. Rajan, and P. Kalyanasundaram
IGCAR, Kalpakkam, Tamil Nadu, India

Prototype Fast Breeder Reactor (PFBR) is a 500MWe, sodium cooled, pool type, mixed oxide (MOX) fuelled reactor. Sodium flow measurement in various loops of the reactor is of prime importance from the operational and safety aspects. To measure the flow of electrically conducting sodium in large secondary circuit pipes, probe type permanent magnet flowmeters (PTFM) are used. PTFM works on the ...

Deformation of Drop-within-Drop System under the Influence of High Intensity Oscillating Electric Field

D. Das[1], R.S. Patil[1], S. Kulkarni[1], V.A. Juvekar[1], and R. Bhattacharya[2]
[1]IIT Bombay, Mumbai, Maharashtra, India
[2]India Atomic Energy Regulatory Board, Mumbai, Maharashtra, India

This paper deals with the simulation study using COMSOL on the deformation of drop-within-drop system in a high intensity oscillating electric field. It consists of a composite drop suspended in a continuous phase. This composite drop has a smaller inner drop suspended within the larger outer drop. The outer drop is made up of another immiscible liquid. A high intensity sinusoidally varying ...

Non-Newtonian Hemodynamics and Shear Stress Distribution in Three Dimensional Model of Healthy and Stented Coronary Artery Bifurcation

M.M. Zarandi[1], R. Mongrain[1], and O.F. Bertrand[2]
[1]McGill University, Montreal, QC, Canada
[2]Laval University Quebec City, QC, Canada

In this paper, a three-dimensional model of the coronary artery bifurcation is developed and physiological flow in the both healthy and stented coronary artery bifurcation is modeled using COMSOL Multiphysics. Wall shear stress induced by endovascular stents in the coronary artery bifurcation is analyzed considering both non- Newtonian and Newtonian flow models. Our simulations shows that the ...