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.

Design & Development of Helmholtz Coil for Hyperpolarized MRI

V. Bhatt, R.S Rautela, P. Sharma, D.C. Tiwari, and S. Khushu
Institute of Nuclear Medicine & Allied Sciences (DRDO), Delhi, India

The Helmholtz Coil generates a uniform magnetic field. The commercially available large-size Helmholtz coils prove to be very expensive. This paper describes the economical method of designing and construction of a Helmholtz coil. COMSOL Multiphysics AC/DC Module simulated results and actual results were compared in this study. The coil serves as a component in the system for Hyperpolarisation ...

The Simulation of Electric Field Distribution in Electrospinning Process - new

Y. Zheng[1], B. Xin[2]
[1]Donghua University, Shanghai, China
[2]Shanghai University of Engineering Science, Shanghai, China

The electric field plays a very important role in the electrospinning process, which needs to be seriously considered in the electrospinning configuration developing. High voltage involved in electrospinning process leads to difficulty in measuring the electric field. Numerical simulation is used to design the electric field, and experiments are carried out to validate the spinneret and ...

Characterization of a 3D Photonic Crystal Structure Using Port and S-Parameter Analysis

M. Dong[1], M. Tomes[1], M. Eichenfield[2], M. Jarrahi[1], T. Carmon[1]
[1]University of Michigan, Ann Arbor, MI, USA
[2]Sandia National Laboratories, Albuquerque, NM, USA

We present a 3D port sweep method in a lossy silicon photonic crystal resonator to demonstrate the capabilities of COMSOL Multiphysics® for frequency domain analysis with input and output ports. This method benefits from the advantages of the S-parameter analysis to characterize the input and output coupling into the resonator. By pumping one end of the cavity with a CW plane wave, we are able ...

Impact of Electrode Surface/Volume Ratio on Li-ion Battery Performance - new

S. Das[1], J. Li[2], R. Hui[1]
[1]University of Kansas, Lawrence, KS, USA
[2]Kansas State University, Manhattan, KS, USA

The adoption of micro- and nanostructured electrodes is a promising technique to improve the performance of Li-ion battery, which increases the electrode surface area and improves the efficiency of ion exchange between the electrode and electrolyte. This performance improvement is supported by the results of our numerical simulation based of a Li+ battery in COMSOL Multiphysics® software. The ...

Design Optimization of Printed Circuit Board Embedded Inductors through Genetic Algorithms with Verification by COMSOL Multiphysics®

M. Madsen[1], J. Mønster[1], A. Knott[1], M. Andersen[1]
[1]Technical University of Denmark, Lyngby, Denmark

This paper describes the implementation of a complete design tool for design, analysis, optimization and production of PCB embedded inductors. The paper shows how LiveLink™ for MATLAB® and COMSOL Multiphysics® make it possible to combine the scripting and calculation power of MATLAB with the simulation power of COMSOL Multiphysics in order to get an extremely efficient tool for inductor design. ...

Electric Field Calculations for AC and DC Applications of Water Controlled Cable Termination - new

T. Karmokar[1], R. Pietsch[1]
[1]HIGHVOLT Prüftechnik Dresden GmbH, Dresden, Sachsen, Germany

The computation of electric field strength is the state-of-the-art technique for designing and optimizing High-Voltage (HV) equipment. In this research, the equipment under analysis is Cable Termination (CaTr) which is used to apply high-voltage (75 kV – 800 kV AC) on the cable to be tested (Figure 1). The CaTr is based on the principle of linear electric field control using deionised water with ...

Fast 2D Simulation of Superconductors: A Multiscale Approach

V.M. Rodriguez-Zermeno[1], M.P. Sørensen[1], N.F. Pedersen[2], N. Mijatovic[2], and A.B. Abrahamsen[3]
[1]DTU Mathematics, Lyngby, Denmark
[2]DTU Electrical Engineering, Lyngby, Denmark
[3]Materials Research Division, Risø, DTU, Roskilde, Denmark

This work presents a method to calculate AC losses in thin conductors such as the commercially available second generation superconducting wires through a multiscale meshing technique. The main idea is to use large aspect ratio elements to accurately simulate thin material layers. For a single thin superconductor, several standard test cases are simulated including transport current, externally ...

Studying Crosstalk Trends for Signal Integrity on Interconnects using Finite Element Modeling

J. Grover[1], Dr. A. Gupta[1]
[1]Birla Institute of Technology and Science, Pilani-Pilani Campus,Rajasthan ,India

In high-speed digital design, strong electromagnetic coupling exists between adjacent transmission lines. This manifests itself in the form of crosstalk voltage induced on either line. Crosstalk is modeled in terms of capacitance and inductance matrices which are extracted using COMSOL Multiphysics®. Further, trends of crosstalk are observed with variations in dielectric constant of substrate, ...

Magnetic Levitation System for Take-off and Landing Airplane – Project GABRIEL

K. Falkowski[1], K. Sibilski[1]
[1]Wroclaw University of Technology, Wrocław, Poland

In the paper will be presented the construction of passive magnetic suspension with superconductors. The system of magnetic suspension was designed for GBRIEL project. There is presented numerical test bench of passive magnetic suspension with superconductor. This kind of suspension was selected for generation of magnetic levitation forces in a sledge of take-off and landing system of an ...

Study of Capacitance in Electrostatic Comb-Drive Actuators

P. Hanasi [1], B. G. Sheeparamatti [1], V. Abbigeri [1], N. Meti [1],
[1] Visvesvaraya Technological University, Belagavi, Karnataka, India

Capacitor is mainly defined as two conducting plates that can hold the opposite charges on it. These plates can be used either as a sensor or an actuator. If the relative distance between the two conductors changes as result of given input, then capacitance values will change. This results in basic of capacitive or electrostatic sensing configuration. On the other hand, if a voltage or the ...