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.

3-D Finite Element Modeling of Brain Edema: Initial Studies on Intracranial Pressure Using COMSOL Multiphysics®

X.G. Li[1], H. von Holst[1][2], J. Ho[1], and S. Kleiven[1]

[1]Division of Neuronic Engineering, KTH, Stockholm, Sweden
[2]Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden

Brain edema is one of the most common consequences of serious traumatic brain injuries which is usually accompanied with increased Intracranial Pressure (ICP) due to water content increment. A three dimensional finite element model of brain edema is used to study intracranial pressure in this paper. Three different boundary conditions at the end of Cerebral Spinal Fluid (CSF) were used to ...

Numerical Simulations Demonstrate Safe Vitrification and Warming of Embryos Using the Rapid-i™ Device

B.O.J. Johansson[1][2], Y.A. Tarakanov[1], H.J. Lehmann[2], and S.P. Apell[1]

[1]Department of Applied Physics, Chalmers University of Technology, Gothenburg, Sweden
[2]Vitrolife Sweden AB, Västra Frölunda, Sweden

During cryopreservation of human embryos, ice crystal formation in the embryos or in surrounding media may cause cryodamage to them and can be lethal. A strategy to avoid this is the vitrification procedure when the embryo and the surrounding medium undergo the transition to glassy state rather than a crystalline one during cooling. Similarly, recrystallization in the embryo or the medium must ...

A Consistent Environment for the Numerical Prediction of the Properties of Composite Materials

J. Schumacher[1], P. Fideu[2], G. Ziegmann[1], and A. Herrmann[3]
[1]TU Clausthal-Institute of Polymere Materials and Plastic Engineering, Clausthal-Zellerfeld, Germany
[2]CTC GmbH Stade, Stade, Germany
[3]Faserinstitut Bremen e.V., Bremen, Germany

The current paper focuses on the creation of a consistent environment for the numerical prediction of the physical properties of polymer composite. A limitation factor for the successful simulation of composite processes is the correct estimation of the effective properties depending on several factors such as the constituents (fiber, polymer), the process setup. The numerical prediction of the ...

Numerical Evaluation of Long-Term Performance of Borehole Heat Exchanger Fields

A. Priarone[1], S. Lazzari[1], and E. Zanchini[1]

[1]Dipartimento di Ingegneria Energetica, Nucleare e del Controllo Ambientale, Alma Mater Studiorum - Università di Bologna, Bologna, Italy

The long-term performance of double U-tube Borehole Heat Exchangers (BHEs) is studied numerically by considering three different time-dependent heat fluxes exchanged between each BHE and the ground. Since the temperature distribution along the vertical direction has a negligible influence on long-term BHE performance, the problem is studied by means of a 2D conduction model, where the energy ...

Hydrogen Vehicle Leak Modelling in Indoor Ventilated Environments

A. Hallgarth[1], A. Zayer[1], A. Gatward[2], and J. Davies[2]
[1]Hazard Research & Risk Consultants Ltd, Aberystwyth, Wales, United Kingdom
[2]Independent Consultants, United Kingdom

This paper presents and discusses HazRes’ research and results associated with the simulation and modelling of hydrogen release and dispersion events in indoor enclosed environments, using COMSOL Multiphysics. HazRes has developed a gas dispersion model in COMSOL, which takes into account the effects of buoyancy, localized ventilation effects and turbulence generated by obstacles on the ...

Drying In Porous Media: Equilibrium And Non-Equilibrium Approaches For Composting Processes

A. Pujol[2], S. Pommier[3], G. Debenest[2], M. Quintard[2], and D. Chenu[1]
[1]Veolia Environnement, Limay, France
[2]IMFT, Toulouse, France
[3]INSA Toulouse, Toulouse, France

To understand origins and consequences of drying phenomenon during composting, a compositional drying model of a partially water-saturated porous media coupled with biodegradation has been developed. The different simulations carried out under COMSOL Multiphysics demonstrate the ability of the model to well describe the compositional drying of a partial water-saturated porous media and point out ...

A Study of Distributed Feed-Back Fiber Laser Sensor for Aeronautical Applications Using COMSOL Multiphysics

I. Lancranjan[1], C. Gavrila[2], S. Miclos[3], and D. Savastru[3]
[1]Advanced Study Centre - National Institute for Aerospace Research Elie Carafoli, Bucharest, Romania
[2]Technical University of Civil Engineering Bucharest, Romania
[3]National Institute R&D of Optoelectronics, INOE 2000, Bucharest, Romania

Distributed Feedback Fiber Laser (DFB-FL) sensors are increasingly used in aeronautical applications. One of the newest such applications consists in detecting the “transition” zone between laminar and turbulent air flow upon the extrados surface of an aircraft wing. In this specific application DFB-FL are operated as air pressure sensors monitoring amplitude variations of ~1 Pa (laminar flow) ...

AlN/ZnO/Silicon Structure Combining Surface Acoustic Waves And Waveguiding Layer Acoustic Wave

O. Legrani[1], O. Elmazria[1], S. Zhgoon [2], L. Le Brizoual[3], and A. Bartasyte[1]
[1]Institut Jean Lamour, CNRS-Nancy University, Vandoeuvre lès Nancy, France
[2]Moscow Power Engineering Institute, Krasnokazarmennaja, Moscow, Russia
[3]Institut des Matériaux Jean Rouxel, Université Nantes, CNRS, Nantes, France

In this work, the theoretical study for the realization of waveguiding layer acoustic waves devices based on AlN/IDT/ZnO/Silicon structure using the modeling software COMSOL Multiphysics (2D) is presented. The effect of thicknesses of AlN and ZnO thin films on the evolution of frequency response, phase velocity and electromechanical coupling is studied. The adequate structure is determined for ...

Stress Distribution in Masonry Walls, Loaded in Plane, Simulated with COMSOL

A.T. Vermeltfoort, and J. van Schijndel
Eindhoven University of Technology, the Netherlands

The tensile strength of masonry is relatively low compared to its compressive strength and is affected by the direction of the joints and their filling. In masonry with modern thin layer mortar (joint thickness 3 to 5 mm) sometimes the head joints are left open. A total of 13 model-walls was built and for each model four general purpose mortar combinations and three thin layer mortar ...

A Methodology For The Simulation Of MEMS Spiral Inductances Used As Magnetic Sensors

S. Druart, D. Flandre, and L.A. Francis
Université catholique de Louvain - ICTEAM, Louvain-la-Neuve, Belgium

In this paper, a methodology to simulate the electric behavior of spiral inductances is presented and discussed. All the methodology is built with the COMSOL software used with the Matlab scripting interface and then allows performing fully parameterized simulations. The program architecture is explained and is used to simulate two applications. The first calculates the voltage induced by an ...