Veröffentlichungen und Präsentationen

Hier finden Sie Veröffentlichungen und Präsentationen der weltweit stattfindenden COMSOL-Konferenzen. In diesen präsentieren Ihre Fachkollegen ihre neuesten mit COMSOL Multiphysics entwickelten Produkte und Ideen. Die Forschungsthemen umfassen ein weites Feld von Industrien und Anwendungsbereichen, die von Mechanik und Elektronik über Strömungen bis zur Chemie reichen. Nutzen Sie die Quick Search, um die zu Ihrem Forschungsbereich passenden Präsentationen zu finden.

Prediction of the Effective Thermal Conductivity of Composites with Spherical Particles of Higher Thermal Conductivity than the one of the Polymer Matrix

Filip, C., Garnier, B., Danes, F.
Laboratoire de Thermocinétique de Nantes, UMR

The introduction of conductive filler in polymer matrix is an effective way to increase the thermal conductivity of the plastic materials as needed by several industrial applications. The design of composites requires to optimize heat transfer while taking into account mechanical, ecological concerns and this involves a lot of experimental work. The prediction of the effective conductivity of ...

On the Numerical Modeling of Elastic Resonant Acoustic Scatterers

V. Romero-García[1], A. Krynkin[2], J.V. Sánchez-Pérez[1], S. Castiñeira-Ibáñez[3], and L.M. Garcia-Raffi[4]
[1]Centro de Tecnologías Físicas Acústica, Universidad Politécnica de Valencia, Valencia, Spain
[2]School of Computing, Science & Engineering, University of Salford, Salford, United Kingdom
[3]Depto. Física Aplicada, Universidad Politécnica de Valencia, Valencia, Spain
[4]Instituto Universitario de Matemática Pura y Aplicada, Universidad Politécnica de Valencia, Valencia, Spain

The elastic and geometrical properties of Low Density Polyethylene (LDPE) foam are used in this paper to improve the attenuation properties of periodic arrangements of acoustic scatterers known as Sonic Crystals (SCs). A specific recycled profile of LDPE foam is used as elastic-acoustic scatterer. The acoustic spectrum of the single scatterer shows two attenuation peaks in the low frequency ...

Numerical and Experimental Study of a Concentrated Indentation Force on Polymer Matrix Composites

V. Antonucci[1][2], M. Esposito[1], R. Marzella[2], and M. Giordano[1][2]
[1]Institute for Composite and Biomedical Materials, CNR, Portici, NA, Italy
[2]Imast, Portici, NA, Italy

A quasi static indentation test on a laminate composite has been investigated numerically and experimentally. In particular, the test has been implemented by COMSOL Multiphysics® and optimizing the Finite Element and mesh. In addition, the numerical strain results have been validated by the comparison with the respective experimental deformation data that have been obtained by fiber Bragg ...

Negative Ion Beams and Secondary Beams

M. Cavenago[1], P. Veltri[2], E. Gazza[2], G. Serianni[2], and P. Agostinetti[2]
[1]INFN-LNL, Legnaro, Padova, Italy
[2]Consorzio RFX, Padova, Italy

The development of powerful negative ion sources requires precise and versatile simulation tools to predict the emittance of the extracted ion beams and the heat load on the electrodes. A first tool is a determination of the plasma beam interface which is accomplished by a set of macro based in the COMSOL Multiphysics environment. Notwithstanding the strong nonlinearities involved, a proper ...

Multiphysical Modeling of Calcium Carbonate Transportation in UV Disinfection in Water Treatment

E. R. Blatchley[1], and B.Z. Sun[1]
[1]Department of Civil Engineering, Purdue University, West Lafayette, IN, USA

Mineral precipitation on to the quartz surface of the lamp jackets in UV disinfection process (fouling) has been recognized as a major problem for UV radiation delivery during disinfection operation. Fouling behavior was observed to be induced thermally and influenced by hydraulic character of the UV disinfection configuration. Fouling process involves momentum, heat, and mass transport within ...

Study of an Electroacoustic Absorber

A-S. Moreau[1], H. Lissek[1], and R. Boulandet[1]
[1]EPFL-STI-IEL-LEMA, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland

In this paper, the underlying concept of electroacoustic absorbers is studied with the help of Comsol Multiphysics® Acoustics Module. Among the different ways to obtain variable acoustic properties on an electroacoustic transducer's voicing face, there is the shunting of the transducer's electrical input. With such shunt devices, the acoustic impedance that the transducer's membrane presents ...

Coupling Miscible Flow and Geochemistry for Carbon Dioxide Flooding into North Sea Chalk Reservoir

B. Niu[1], W. Yan[1], A.A. Shapiro[1], and E.H. Stenby[1]

[1]Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark

As an effective method to cope with green-house gas emission, and to enhance oil recovery, injection of carbon dioxide into oil reservoirs has obtained increasing attentions. The flooding process involves complex phase behavior among oil, brine and CO2, and geochemical reaction between CO2 and rock. COMSOL Multiphysics® was first applied to simulating two flooding processes with known ...

Lösung eines gekoppelten Konvektions-Diffusions-Problems aus der Akustik

G. Bärwolff
TU Berlin, Inst.f.Math., Berlin

Zur effizienten Beschreibung akustischer Systeme werden oft sogenannte Netzwerkmodelle benutzt. Hierbei wird das Gesamtsystem in einzelne (einfache) Elemente zerteilt, die dann jeweils durch ihr eigenes Übertragungsverhalten charakterisiert sind. Besonders einfach lässt sich dieses Übertragungsverhalten darstellen, wenn zwischen den Elementen nur ebene Wellen ausbreitungsfähig sind.1 In ...

Computer Modelling of Deformable non-Newtonian Flow using COMSOL Multiphysics

H.A. Lecuyer[1], F.H. Bertrand[1], P.A. Tanguy[1], J.P. Mmbaga[2], and R.E. Hayes[2]
[1] Ecole Polytechnique , Montreal
[2] University of Alberta, Edmonton

This presentation is concerned with the modelling of deformable non-Newtonian Flow using COMSOL Multiphysics. This general modelling approach has more concrete applications such as paper coating in a metering size press, meniscus location by PIDS to mention a few.

Image-Based Simulation of Electrical Impedance Techniques Applied on the Human Thorax for Cardio-Pulmonary Applications

F.K. Hermans[1], R.M. Heethaar[1], R.T. Cotton[2], and A. Harkara[2]

[1]VU University Medical Center, Amsterdam, The Netherlands
[2]Simpleware Ltd., Exeter, United Kingdom

For medical diagnostic purposes there is an increasing need for non- (or minimal) invasive techniques to measure all kinds of parameters that can provide insight in the functioning of cells, organs or organ systems. Currently, Impedance Cardiography (ICG) is used for measurements of the heart and Electric Impedance Tomography (EIT) is used for investigating lung tissue condition. This paper ...

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