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.

Hydro-Mechanical Modelling of Infiltration Test for a Bentonite-Sand Mixture: Model Verification and Parameter Identification

M. Hasal[1], R. Hrtus[1], Z. Michalec[1], R. Blaheta[1]
[1]Institute of Geonics AS CR, Ostrava, Czech Republic

The first aim of our work is to create a hydro-mechanical model (HM) of unsaturated fluid flow in bentonite-sand mixture (BSM) MX-80. The second aim is to validate and calibrate the developed model by using the data from a laboratory infiltration test of BSM. The used multi-physics model combines Richards type unsaturated flow with diffusive vapour flow and (nonlinear) elastic response of the ...

Transient Simulation of an Electrochemical Machining Process for Stamping and Extrusion Dies

M. Penzel [1], M. Hackert-Oschätzchen [2], M. Kreißig [1], M. Kowalick [1], M. Zinecker [1], A. Schubert [1], G. Meichsner [3],
[1] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
[2] Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany; Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
[3] Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany

Precise electrochemical machining (PEM) is a non-conventional machining technology, based on anodic dissolution of metallic work-pieces. In this study an additional extension of the precise electrochemical machining with a precise angle-controlled cylinder positioning is aimed. Due to the help of the angle-controlled cylinder positioning, with PEM e.g. stamping and extrusion dies can be ...

Simulation of Electro-Thermal Transients in Superconducting Accelerator Magnets

L. Bortot [1], M. Maciejewski [2], M. Prioli [1], B. Auchmann [3],
[1] CERN, Geneva, Switzerland
[2] CERN, Geneva, Switzerland; Lodz University of Technology, Lodz, Poland
[3] CERN, Geneva, Switzerland; Paul Scherrer Institute, Zurich, Switzerland

The paper presents the application of COMSOL Multiphysics® software to the modelling of superconducting accelerator magnets. A 2D magneto-thermal model is developed, using an equivalent magnetization formulation to take into account the eddy-currents’ effects. Due to the model complexity, a suitable workflow has been developed in Java® to extensively use the available COMSOL API. The automation ...

Importance of Assembly Discontinuity Factors In Simulating Reactor Cores Containing Highly Heterogeneous Fuel Assemblies

G. Gomes[1]
[1]Atomic Energy of Canada Limited, Mississuaga, Ontario, Canada

To assess the importance of assembly discontinuity factors (ADF), a highly heterogeneous reactor core was simulated using a COMSOL model in which ADF are not used. The resulting errors in assembly powers were found to be unacceptably high. This indicates that for highly heterogeneous cores such as one with MOX and LEU fuel assemblies, the use of techniques that counter the effect of ...

A Flow Induced Vertical Thermoelectric Generator and its Simulation using COMSOL Multiphysics

E. Topal
Micro and Nanotechnology Program
Middle East Technical University
Ankara, Turkey

In this study, a new thermoelectric harvester with fluid flow for increased performance is introduced. The thermoelectric generator is 3D vertical configuration with p- and n-doped Silicon thermolegs. There is water flow between channels integrated through the thermoelectric columns, providing forced convection on the heat flow path. Our thermoelectric generator design can be used for energy ...

The Effect of Composition on the Role of Evaporation During Oil Recovery by Combustion

N. Khoshnevis Gargar[1], A. Mailybaev[2], D. Marchesin[2], H. Bruining[1]
[1] Delft University of Technology, Delft, The Netherlands
[2] Instituto Nacional de Matematica Pura e Aplicada, Rio de Janeiro, Brazil

One of the methods to recover oil from medium and low viscosity in complex reservoirs uses air injection leading to oil combustion. In this case the oxygen in the air burns the heavier components of the oil, generating a heat wave leading to vaporization of lighter components. The combustion mechanisms are different for light oils, where evaporation is dominant, whereas for medium non-volatile ...

Simulation of the Coalescence and Subsequent Mixing of Inkjet Printed Droplets

M.H.A. van Dongen[1], H.J. van Halewijn[2]
[1]Fontys University of Applied Sciences, Expertise Centre Thin Films & Functional Materials, Eindhoven, The Netherlands
[2]Fontys University of Applied Sciences, Eindhoven, The Netherlands

Coalescence of droplets is a widely investigated phenomenon. In inkjet printing micrometer sized droplets are deposited on a substrate which when positioned close enough to each other will coalesce and mix. Little is known about the flows and mixing behaviour within these small droplets. In this investigation we follow the time evolved coalescence of two droplets with volume ratios ranging from ...

iCP 1.0: Stable Release Version of the Interface COMSOL-PHREEQC - new

A. Nardi[1], L. M. deVries[1], A. Sainz[1], J. Molinero[1]
[1]Amphos 21 Consulting, Barcelona, Spain

iCP (Nardi et al, 2014) is a software that couples two standalone simulation programs: COMSOL Multiphysics® and PHREEQC (Parkhurst & Appelo, 2013). The tool is ideal for applying multiphysics and geochemistry in Earth Sciences. Flexibility of the two coupled codes result in an extensive list of modelling areas, offering good opportunities for R+D. The iCP 1.0 is the version of the ...

Investigations on Polarization Losses in Planar Solid Oxide Fuel Cells

S. T. Aruna [1], S. Senthil Kumar [1], A. Iyer [1], B. ShriPrakash [1]
[1] CSIR-National Aerospace Laboratories, Bangalore, Karnataka, India

In recent years, various configurations of planar Solid Oxide Fuel Cells (SOFC) have been developed for enhancing its performance. The objective of these efforts are centered on reducing polarization losses (also referred as "overpotential") by optimizing the structure and properties of three key components- anode, electrolyte and cathode. The present work was aimed at developing a model for ...

Electron Beam Crystallization of Amorphous Silicon Thin Films

S. Saager [1],
[1] Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (FEP), Dresden, Germany

A promising method for low cost production of efficient silicon thin film solar cells is the electron beam physical vapor deposition (EB-PVD) of high purity amorphous silicon (a-Si) layers with high deposition rates up to 300 nm/s [1] followed by crystallization. This study focuses on EB crystallization of deposited a-Si films in the solid phase regime and justifies observed experimental results ...