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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.

A Simplified Numerical Model for Simulating Sliding Door and Surgical Staff Movement in an Operating Theater

C. Balocco[1]
[1]Dipartimento di Energetica, Università di Firenze, Firenze, Italy

This paper deals with a numerical investigation on sliding door and people moving effects on the indoor climate of a standard ISO5 class OT with an ultraclean air filter system and a total ceiling unidirectional diffuser. A simple method to analyze the effects on the OT climate by different sliding door conditions combined with crossing persons and persons with a stretcher crossing is provided. ...

Including Expert Knowledge in Finite Element Models by Means of Fuzzy Based Parameter Estimation

O. Krol[1], N. Weiss[1], F. Sawo[1], and T. Bernard[1]

[1]Fraunhofer Institute for Information and Data Processing, Karlsruhe, Germany

In this paper we present a novel approach for modeling spatial distributed bio- chemical and environmental processes like the growth of plants and the related biochemical reactions. The physical phenomena like flow and mass transport can be described by fluid dynamics equations, but for effects like growth rates often no analytic models are available. However, in many cases experts have knowledge ...

Rapid Control Prototyping for the Production of Functionally Graded Materials with Tailored Microstructural Properties Utilizing Comsol Multiphysics

J. Clobes[1,2], H.-J. Watermeier[2], M. Alsmann[2], H. H. Becker[2], and K. Steinhoff[1]
[1]University of Kassel - Chair of Metal Forming Technology, Kassel, Germany
[2]Volkswagen AG, Kassel, Germany

Within the field of hot metal bulk forming the demand arises for fully three-dimensionally tailored properties at the microstructural level, nevertheless, reaching a predefined geometry with such tailored properties puts high requirements on the control mechanisms utilized in the process chain for combined heating, metal forming, and cooling processes. A simulation based rapid control ...

Use of COMSOL as an Educational Tool Through its Application to Ground Water Pollution

A. Modaressi-Farahmand-Razavi[1]
[1]MSS-Mat Laboratory, CNRS, Ecole Centrale Paris, Châtenay Malabry, France

Ensuring the quality of underground water and controlling its quantity is of major concern for the population. Therefore, this subject attracts many students from different specialties at different levels of their curriculum. In fact, the pedagogic objectives of the course may be different according to the level or/and interest of the students and COMSOL is used due to its versatility. In this ...

COMSOL in the Academic Environment at USNA

K. Mcilhany[1], and R. Malek-Madani[2]
[1]Department of Physics U. S. Naval Academy, Annapolis, Maryland, USA
[2]Department of Mathematics, U. S. Naval Academy, Annapolis, Maryland, USA

The U.S. Naval Academy has used COMSOL as a research tool for many years. Academic usage of COMSOL for student use has only begun in the last five years. Student involvement comes in four types, course-wide usage, focused course related work, student projects and semester-long research projects. A summary of how COMSOL has been successfully used at USNA will be given, showing examples of ...

Coupling COMSOL’s Subsurface Flow Module with Environmental Geochemistry in PHREEQC

L. Wissmeier[1], and D. A.Barry[2]
[1]GIT HydroS Consult GmbH, Freiburg, Germany
[2]EPFL, Lausanne, Switzerland

We present a software tool for simulations of subsurface flow and solute transport in combination with comprehensive intra-phase and inter-phase geochemistry. The software uses PHREEQC as a reaction engine to COMSOL Multiphysics®. The coupling with PHREEQC gives major advantages over COMSOL’s built-in reaction capabilities, i.e., the soil solution is speciated from its element composition ...

COMSOL Implementation of Valet-Fert Model for CPP GMR devices

T. Xu[1], C.K.A. Mewes[1], S. Gupta[2], and W.H. Butler[1]
[1]Department of Physics and Astronomy and Center for Materials for Information Technology, University of Alabama, Tuscaloosa, Alabama, USA
[2]Department of Metallurgical and Materials Engineering and Center for Materials for Information Technology, University of Alabama, Tuscaloosa, Alabama, USA

The Giant Magneto Resistance (GMR) effect is a quantum mechanical effect which can be observed in systems consisting of thin alternating ferromagnetic and non-ferromagnetic layers. Simulation using COMSOL allows the evaluation of the magneto-resistance ratio and the electrical resistances of realistic CPP-GMR devices and opens the possibility to study new device materials and designs.

Development of the Service Frame for SBS Tracker GEM and TENDIGEM Development

F. Noto[1], E. Cisbani[2], F. Librizzi[1], F. Mammoliti[3], C.M. Sutera[1]
[1]Istituto Nazionale Fisica Nucleare - Sezione di Catania, Catania, Italy; Dipartimento di Fisica ed Astronomia, Università di Catania, Catania, Italy
[2]Istituto Nazionale Fisica Nucleare - Sezione di Roma, Roma, Italy; Istituto Superiore di Sanità, Roma, Italy
[3]Istituto Nazionale Fisica Nucleare - Sezione di Catania, Catania, Italy; Dipartimento di Fisica ed Astronomia, Università di Catania, Catania, Italy

The Gas Electron Multiplier (GEM) technology has been proven to tolerate rate larger than 50 MHz/cm² without noticeable aging and to provide the sub-millimeter resolution on working chambers up to 45x45 cm² [1]. A new GEM tracker is under development for the upgrade of the SBS spectrometer in Hall A at Jefferson Lab. The chambers of the tracker have been designed in a modular way: each chamber ...

Optimum Design for Magneto-Rheological Brake Using COMSOL Multiphysics® Software

J. Thanikachalam[1], P. Nagaraj[1]
[1]Mepco Schlenk Engineering College, Sivakasi, Tamil Nadu, India

The Automotive industry has now become a technology of “Drive by Wire”. This technology is used to replace the conventional mechanical system by electromechanical system which is able to perform the same tasks faster, more reliably and accurately. The problems with the traditional braking systems are unreliable at high speeds, long respond time, more brake pad wear, high temperature ...

Modeling Dispersal of Genetic Information in Structured Agricultural Landscapes with Partial Differential Equations

K. Lipsius, and O. Richter
Institute of Geoecology, TU Braunschweig, Germany

We present a model for plant dispersal in agricultural landscapes to evaluate the gene dispersal from genetically modified (GM) plants. Dispersal from seed and pollen is modeled with partial differential equations. In scenarios, we investigated the effect of roadside application of non-selective herbicides on dispersal of herbicide tolerant oilseed rape (HT OSR). We showed that OSR growing on ...