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.

Comparative Study of an Open Waveguide.Application to Deconvolution of a Magnetic Probe in Near-Field Zone

A. Saghir, J.W. Tao, and C. Avram
INP, Laplace site Enseeiht, Toulouse, France

We present here our work on deconvolution of a magnetic probe to mesure electromagnetic emissions in near-field zone. To achieve this work,we have chosen a rectangular waveguide (WR90) as a radiating structure.Theoritical near-field is simulated using a FEM software (COMSOL) and also obtained by using a program based on transverse operator method (TOM), that lead to a very good field ...

Coupling COMSOL’s Subsurface Flow Module with Environmental Geochemistry in PHREEQC

L. Wissmeier[1], and D. A.Barry[2]
[1]GIT HydroS Consult GmbH, Freiburg, Germany
[2]EPFL, Lausanne, Switzerland

We present a software tool for simulations of subsurface flow and solute transport in combination with comprehensive intra-phase and inter-phase geochemistry. The software uses PHREEQC as a reaction engine to COMSOL Multiphysics®. The coupling with PHREEQC gives major advantages over COMSOL’s built-in reaction capabilities, i.e., the soil solution is speciated from its element composition ...

Homogenized models of electrically-coupled excitable tissues

P. Goel

IISER
Pune
India

Pranay Goel received his B. Tech. in Engineering Physics from IIT Bombay, and MS and PhD in Physics from the University of Pittsburgh in 2003. He went on to two postodoctoral positions, the first at the Mathematical Biosciences Institute, The Ohio State University, and another at the Laboratory of Biological Modeling, The U.S. National Institutes of Health. He has been with IISER Pune since ...

Lab on Chip for Detection of E.coli Cell Using Capacitance Modulation

S. Gupta
Visvesvaraya National Institute of Technology
Nagpur
Maharashtra, India

In this paper , lab on chip (LoC) is proposed to detect an E.coli bacteria in water. LoC is a chip of size ranges from millimeter to few centimeter in which we can combine laboratory functions. The main components in lab on chip are micro fluidic structure, functionalized sensing block , measurements (interface)system. The microfluidic structure and sensing block is to be simulated in COMSOL ...

Optimization of the Design of a GEM Tracker Based on Gas Flow Simulations with COMSOL

V. De Smet[1], V. Bellini[2], E. Cisbani[3], F. Noto[2], F. Mammoliti[2], C. M. Sutera[4], and M. Mangiameli[4]
[1]Dipartimento di Fisica ed Astronomia, Università di Catania, Catania, Italy; Haute Ecole Paul-Henri Spaak, ISIB, Bruxelles, Belgium
[2]Dipartimento di Fisica ed Astronomia, Università di Catania, Catania, Italy; INFN – Sezione di Catania, Catania, Italy
[3]INFN – Sezione di Roma - Sanità Group, Roma, Italy; Italian National Institute of Health, Roma, Italy
[4]INFN - Sezione di Catania, Catania, Italy

A Computational Fluid Dynamics study has been performed for a Gas Electron Multiplier (GEM) detector of high energy charged particles, currently under development as part of a new tracker of the high luminosity spectrometers in Hall A at Jefferson Lab. By gradual modifications of the geometry simulated in COMSOL, the design of the frame separating two GEM foils has been optimized with the aim ...

Simulation of chaotic mixing dynamics in microdroplets

H. Zhou, L. Jiang, and S. Yao
The Hong Kong University of Science and Technology,
Hong Kong

Rapid mixing is of essential importance in many microfluidic applications such as chemical reactions, drug delivery, sequencing or synthesis of nucleic acids, protein crystallization, etc. However, it is difficult to mix fluids in microchannels since flows in these channels are generally laminar and molecular diffusion is usually insufficient to mix fluids. Using a combination of turns and ...

Design of Traveling Wave Ultrasonic Vibration Disk for Nano-particles in Liquid Dispersion

J. Muraoka, and T. Suzuki
Yamagata Research Institute of Technology
Yamagata
Japan

The traveling wave ultrasonic vibration disks for dispersion of particles were designed by using of FEM analysis. The vibration disks are required specific vibration pattern, which contains three nodal lines. The vibration disk thickness was calculated to be matched the resonance frequency of bolted langevin type transducer and the specific vibration pattern. The alignment of the transducer was ...

Simulation Analysis of Acoustic Radiation Force under Ultrasound Exposure and Effect to Microbubbles in Flow

T. Ito
Masuda Laboratory
Tokyo University of Agriculture & Technology
Japan

This paper is in Japanese.

Flare System Pressure Drop Calculations Using COMSOL

K. Alhazza[1], B. Albusairi[1], H. Kamal[1], H.M.S. Lababiedi[1], A.A. Abbas[2]
[1]Kuwait University, Kuwait City, Kuwait
[2]Petrochemical Industries Company, Kuwait City, Kuwait

COMSOL Multiphysics has been used to validate and check the design of a header transporting ammonia gases released from pressure safety valves (PSVs) to the tip of the flare. The header is part of a dedicated flaring system to contain emissions from ammonia storage tanks. The two main challenges are the low relief pressure and high capacity of the system. Another difficulty is the high relief ...

Paleohydrogeological Reactive Transport Model of the Olkiluoto Site (Finland) - new

M. Luna[1], P. Trinchero[1], J. Molinero[1], J. Löfman[2], P. Pitkanen[3], L. Koskinen[3]
[1]Amphos 21 Consulting, Barcelona, Spain
[2]VTT Energy, Espoo, Finland
[3]Posiva, Eurajoki, Finland

The safety assessment of the deep geological repository for nuclear waste of Olkiluoto (Finland) requires the evaluation of the influence of the land uplift (ice withdrawal) in groundwater. With this objective in mind, we have developed a three dimensional reactive transport model of the Olkiluoto, simulating the most relevant deformation zones in a three-dimensional domain. The evolution in ...

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