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.

Effiziente Lösung eines Fluid-Struktur-Interaktions-problems in Hydraulischen Dämpfern mit Elastischen Komponenten

Schreiner, M. - Hochschule für Technik Buchs NTB, Labor für Technomathematik, Buchs

Zweistufiges Modell zur Untersuchung von Marangoni-Konvektion in Schwingenden Flüssigkeitsstrahlen

Modigell, M.
RWTH Aachen, Institut für Verfahrenstechnik, Lehr- und Forschungsgebiet Mechanische Verfahrenstechnik

Der Marangoni-Effekt (Marangoni 1871) oder Grenzflächenkonvektion kann in fluiden mehrphasigen Systemen auftreten, in denen eine Abhängigkeit der Grenzflächenspannung von der Temperatur oder der Konzentration einer gelösten Substanz besteht. Temperaturoder Konzentrationsgradienten in der Grenzfläche führen zur Ausbildung von Spannungsgradienten. Diese beeinflussen die ...

FE-modelling of Electrical Borehole Tool Responses

Stoll, J.B.
ANTARES Datensysteme GmbH, Stuhr

Electric well logging was the first logging method used below ground in boreholes by the petroleum industry. Of all the rock parameters measured by logging tools, the electrical resistivity is of particular importance. Resistivity measurements are essential for determining the relative amount of hydrocarbons in a formation.

Skeletal Reduction of Boundary Value Problems over Thin Solids

Suresh, K.
University of Wisconsin – Madison

Boundary value problems posed over thin solids are amenable to a dimensional reduction in that one or more spatial variables may be eliminated from the governing equation, resulting in significant computational gains with minimal loss in accuracy. Extant dimensional reduction techniques unfortunately rely on representing the solid as a hypothetical mid-surface plus a possibly varying thickness. ...

Modelling of continuous steel coating by self-induced ion plating

Contino, A.1, Feldheim, V.1, Lybaert, P.1, Deweer, B,2, Cornil, H.2
1 Faculty of Engineering – Thermal Engng. & combustion Lab., Mons – Belgium
2 Arcelor Innovation, Liège, Belgium

The self-induced ion plating (SIIP) process is a new physical vapor deposition process based on the evaporation of a metallic target (i.e. tin) thanks to a magnetron sputtering system. The aim of this work is to develop a numerical simulation model of the SIIP process in order to predict the target temperature field and from it, the coating profile on the substrate. The simulation of the SIIP ...

Defining the stress fields for the safety design of the LBT adaptive secondary mirror - FEMLAB/MATLAB set of functions to define and compute shell overstressing

Del Vecchio C., Busoni L., Riccardi, A.
INAF-OAA

This paper presents the most important safety issues of the thin glass shell of the LBT Adaptive Secondary Mirror. Two overstressing conditions are investigated: the condition in which the mirror shell is passively supported and the condition of a failure of the control system governing the actuator forces. The two stress analyses determine the portion of the mirror which may exceed a certain ...

Handling Tessellated Free Shape Objects with a Morphing Mesh Procedure in COMSOL Multiphysics®

P. Franciosa[1] and S. Gerbino[2]
[1]Faculty of Engineering, University of Naples Federico II, Napoli, Italy
[2]Faculty of Engineering, University of Molise, Campobasso, Italy

Tessellated models are more and more used in several engineering fields. The need to use such models to quickly perform computer simulations related to coupled physical phenomena, implies the use of dedicated software, allowing to solve, into an integrated environment, multiphysics problems. In the present work, COMSOL Multiphysics® has been used and its ability to handle tessellated models ...

A Numerical Study for Rubber Particles Collection Involved in New Thermoforming Composite Process Using COMSOL Multiphysics®

R. Carbone[1], V. Antonelli[2][3], A. Langella[1], and R. Marissen[3]

[1]Material and Production Engineering Department, Università degli Studi di Napoli Federico II, Napoli, Italy
[2]Institute of Lightweight Structures, Technische Universität München, München, Germany
[3]Design and Production of Composite Structure, Delft University of Technology, Delft, The Netherlands

This paper deal of the forming process applied to the thermoplastic composites. A new thermoforming process that uses rubber particles collection as flexible mould was presented and numerically modeled. A characterization of the rubber in particles form was previously performed to value the material parameters in the user-defined hyperelastic constitutive laws employed in the FEM (Finite Element ...

A Study of Curved Flexures for MEMS

Minhee Jun[1], and Jason V. Clark[1]
[1]Departments of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA

Large deflection actuators are becoming increasingly important for microsystems. Since actuation forces are usually small, large deflection actuators usually require flexures with low stiffness. Rectangular serpentine flexures are often used for such actuators due to their low stiffness and large linear deflection range. In this paper we investigate the performance of curved serpentine flexures ...

Studying Transition Flows for Low Prandtl Number Fluids

H. Jamai[1], A. Elamari[1], M. El Ganaoui[2], F.S. Oueslati[1], B. Pateyron [2], and H. Sammouda[3]
[1]LETTM, Département of physics, F.S.T, Tunisie
[2]SPCTS UMR CNRS, Faculte of Sciences, Limoges, France
[3]ESST-H., Sousse, Tunisie

COMSOL Multiphysics is offering an important alternative to home codes for modeling and simulation of complex problems with including coupled effects on heat and mass transfer. The present work focuses on low Prandtl number fluid melts subject to symmetry breaking and transition to unsteady regimes. These configurations are for practical interest in crystal growth industry, namely the Bridgman ...

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