Technical Papers and Presentations

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.

Track Visualisation of Charged Particles in a Dipole Magnetic Field

B. Polychronopulos
Smiths Detection (Watford) Ltd, Watford, UK

This paper presents results on the visualisation of tracks of charged particles in a non-uniform magnetic field. The field modelled is that generated by a coil driven by DC current. The motion of typical particles, such as electrons, ions and multiply-charged heavy particles has been simulated.  The motion is initially assumed to be in vacuum, so that collisions with neutral particles can be ...

Introduction to COMSOL based Modeling of Levitated Flywheel Rotor

A. Pilat
AGH University of Science and Technology
Kraków, Poland

This elaboration presents a pre-study on automatic rotor construction for the flywheel energy storage system dedicated to operate in the levitation mode. The optimization profile model is used as a basic profile source. The 3D flywheel shape is generated on the base of obtained profiles. Eigenfrequencies are calculated to validate the operation on rigid mode. A steel and aluminum based ...

Simulation of a Magnetic Induction Method for Determining Passive Electrical Property Changes of Human Trunk Due to Vital Activities

H. Mahdavi[1], J. Rosell Ferrer[1]
[1]Universitat Politècnica de Catalunya, Barcelona, Spain

The human body consists of many different types of tissues each with specific passive electrical properties. Vital activities lead to a characteristic change of these properties and geometrical changes. Magnetic induction is a non-contact method which can be used to determine these changes. The method is based on the creation of a primary magnetic field that will produce eddy currents in the ...

Magnetotelluric Response Distortion Over Rugged Topography

D. Rizzello[1], P. Canepa[1], E. Armadillo[1]
[1]DISTAV - University of Genova, Genova, Italy

Topographic effects on magnetotelluric responses may be severe on rugged terrains. Finite elements simulation is a valuable tool to quantify this effect, due to its capability to match real morphologies. To do the estimate of the distortion, the AC/DC Module of COMSOL has been employed, using a model of homogeneous resistivity on which a DEM (Digital Elevation Model) profile of the Deep Freeze ...

Passive Microsensor Based on LC Resonators for Substance Identification

D.A. Sanz Becerra[1], E.A. Unigarro Calpa[1], J. Osma[1], F. Segura[1]
[1]Universidad de los Andes, Bogotá, Colombia

A scheme for inductive wireless powering and readout of passive LC sensor is presented. The sensor’s inductor is designed as a planar square coil and is used as the power receiving component. The capacitor is connected directly to the inductor and it was designed as an interdigital capacitor. With a transmitting coil (coupling antenna), an electromagnetic field is generated which couples with ...

Analysis of an Electromagnet for Diverse Safety Rod Drive Mechanism

N. Subbulu[1], P. Sharma[1], V. Sharma[1], S.K. Das[1], R. Veerasamy[1], B. Krishnakumar[1], P. Kalyanasundaram[1], and G. Vaidyanathan[1]
[1] Fast Reactor Technology Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India

Prototype Fast Breeder Reactor (PFBR) has two independent, diverse, fast acting & fail safe shut down systems to achieve the required level of safety & reliability (1). The shut down systems comprises of nine numbers of Control & Safety Rod Drive Mechanisms (CSRDM) & three numbers of Diverse Safety Rod Drive Mechanisms (DSRDM). DSRDM facilitates SCRAM of the reactor on abnormal ...

Electromagnetic material properties sensor

Gamache, R.W.
TransTech Systems, Inc

Recent research conducted by the author has shown that electromagnetic sensors can be utilized to determine selected properties of heterogeneous material mixtures containing water by observing the manifestations of surface polarization effects that occur in the radio frequency portion of the electromagnetic spectrum. Prior to the availability of multiphysics finite element (FEM) or finite ...

Induction Heating of Samples in Vacuum Systems

A. Della Savia
SAES Getters Group, Lainate, Italy

Getter materials need to be activated in a vacuum system, where induction heating is one of the fastest processes. In this case, eddy currents generated by high frequency AC in a coil surrounding a bulb heat the materials.The temperature profile inside these items depends on geometry configurations, along with the coupling of the samples and material properties.In this article we analyze the ...

Modeling Of A Single Pulse Electric Discharge At Sphere/Flat Interface By Coupling Contact Multiphysics And Phase Transformations

G. Maizza, P. Di Napoli, and R. Cagliero
Dipartimento di Scienza dei Materiali ed Ingegneria Chimica, Politecnico di Torino, Torino, Italy

Contact electro-thermal phenomena are of great theoretical and technological interest to a large number of processing applications, such as spot welding, current-assisted sintering, electrical circuitry (switches) and motors. A model has been developed, aiming at predicting physical and metallurgical phenomena in a steel sample upon rapid heating induced by current pulse discharge. Electric pulse ...

Numerical Simulation of a Human Body Subjected to Electrostatic Fields for Study of the Turin Shroud Body Image

G. Fanti[1], L. Matordes[1], V. Amoruso[2], M. Bullo[1], F. Lattarulo[2], G. Pesavento[1]
[1]Dip. di Ingegneria Industriale, Università di Padova, Padova, Italy
[2]Politecnico di Bari, Bari, Italy

The TS (Turin Shroud) [1,2] is a fine linen fabric showing a not yet explainable [3] double body image of a scourged and crucified man stabbed on the side. Many hypotheses have been formulated without success [4] and perhaps the most reliable is one correlated to the Corona Discharge [5] that supposes the presence of an intense electric field, amplified by the presence of ionization induced by ...

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