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.

Determination of Fundamental Frequency of a Thin Rectangular Perforated Plate using COMSOL Multiphysics

S. V. N. B. Prasad, and B. Raghavendra

COMSOL Multiphysics 4.0 is being used to simulate the free vibrations of a plate. The results obtained by simulation in COMSOL are in close proximity to that found by Fast Fourier Transform analyzer and analytical method. As of now the vibration analysis of thin rectangular plates with perforations in rectangular pattern has been carried out. The study of vibration analysis of thin rectangular ...

Ability of Single-Well Injection-Withdrawal Experiments to Estimate Ground Water Velocity

F. Maier[1], K. Hebig[2], Y. Jin[1], and E. Holzbecher[1]
[1]Georg-August Universität Göttingen, Göttingen, Germany
[2]Technical University Berlin, Berlin, Germany

The authors present a closer look on the Single-Well Injection-Withdrawal Experiment (SWIW) or Push-Pull Experiments and its ability to determine the groundwater velocity, as one of the major parameters concerning reservoir management and underground reservoir characterization. The flow field is modeled using analytic and numerical solutions. Different modes like Darcy-law, solute-transport and ...

Modeling an electric cell actuator and loudspeaker using COMSOL Multiphysics

W. J. Wu
NTU Nano-Bio MEMS Group
National Taiwan University,

This presentation presented the following: * The building of an FEA model of an electric cell actuator using COMSOL Multiphysics * Validation of this model through the AVID and ESPI measurement systems * The building of an FEA model of an electric loudspeaker using COMSOL Multiphysics * Validation of this model throughan acoustic measurement systems This paper is in Chinese.

COMSOL Aided Design of an Extraction Pipe for the Electron Beam from a Plasma Focus Device

M. Valentinuzzi[1], E. Ceccolini[1], D. Mostacci[1], M. Sumini[1], F. Rocchi[2]
[1]Montecuccolino Nuclear Engineering Laboratory, University of Bologna, Bologna, Italy
[2]UTFISSM-PRONOC, ENEA, Bologna, Italy

The electron beam emitted backward by Plasma Focus devices is being investigated as a radiation source for IORT (Intra-Operative Radiation Therapy) applications. A Plasma Focus device is being developed to this aim. The electron beam is driven through an electron pipe made of stainless steel to impinge on a 50 ?m brass foil, where conversion X-rays are generated. Electromagnetic forces in the ...

Using Temperature Signals to Estimate Geometry Parameters in Fractured Geothermal Reservoirs

F. Maier[1], P. Oberdorfer[1], I. Kocabas[2], I. Ghergut[1], M. Sauter[1]
[1]Dpt. Applied Geology, Center of Geosciences, Georg-August-University, Göttingen, Germany
[2]Petroleum and Natural Gas Engineering Department Batman, Batman University, Batman, Turkey

We compare the output of 2D single fracture models as well as analytical solutions of the problem. The temperature signal is evaluated with the heat transfer mode while the flow field is assumed to exhibit Darcy flow everywhere. The problem is time-dependent so we have to take into account a change in the boundary conditions from a Dirichlet to a Neumann condition which is activated at the time ...

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 ...

Multiphysics Simulations in Automotive Product Development: Concept and Beyond

Matthias Richwin joined KOSTAL, a worldwide automotive first-tier supplier, in 2003 where he started working on the design of optical sensor systems. In 2007 he took over responsibility for simulation methods in the series product development and since then leads the simulation engineering group. Besides his interest in the haptics of car-driver interfaces, his main focus is currently on ...

Modeling Electric Fields in Slit Capillary Array Fluidic Actuators with Complex Electrode Geometries

J. Frey[1], A. Droitcour[1], D. Laser[1]
[1]Wave 80 Biosciences, San Francisco, CA, USA

With their small size, low manufacturing cost, fast transient response, and capacity to generate fluid power directly from small electrical power sources, microdevices incorporating electroosmostic flow (EOF) have wide-ranging applications, including newly developed high-performance bioassay systems suitable for use in resource-limited settings. We report on a class of EOF-based devices called ...

Multiphysics Software Applications in Reverse Engineering

W. Wang[1], K. Genc[2]
[1]University of Massachusetts, Lowell, MA, USA
[2]Simpleware, Exeter, United Kingdom

During the past decade reverse engineering has become a common and acceptable practice utilized by many aftermarket suppliers, and even original equipment manufacturers (OEM). This presentation focuses on the applications of multiphysics software such as COMSOL and Simpleware® in reinventing the design details and manufacturing processes of an existing part in the absence of the original design ...

Computation of Capacitance, Inductance, and Potential Distribution of Integrated-Circuit Interconnects for Unshielded Four Conductors with Three Levels Systems

S.M. Musa[1], M.N.O. Sadiku[1], J.D. Oliver[1]
[1]Prairie View A&M University, Prairie View, TX, USA

In this paper an attempt has been made to design and analyze integrated circuit interconnects for unshielded four conductors with three levels system using Finite Element Method (FEM). The computational and simulation work has been carried out with help of COMSOL Multiphysics software. We illustrate that FEM is as accurate and effective for modeling multilayered multiconductor transmission lines ...

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