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Multiphysik-Modellierung und -Simulation treiben Innovationen in Industrie und Wissenschaft voran – wie die zahlreichen Anwendungsbeispiele zeigen, die jedes Jahr in den Fachbeiträgen und Postern von Ingenieuren, Forschern und Wissenschaftlern auf der COMSOL Conference vorgestellt werden. Lassen Sie sich von den unten aufgeführten aktuellen Beiträgen inspirieren oder nutzen Sie die Schnellsuche, um eine bestimmte Präsentation zu finden oder nach Anwendungsbereich oder Konferenzjahr/-ort zu filtern.

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Suchbegriff:

Some Benchmark Simulations for Flash Flood Modeling

E. Holzbecher [1], A. Hadidi [1],
[1] German University of Technology in Oman, Muscat, Oman

Flash floods are sudden and mostly destructive rushes of water down narrow gullies or over sloping surfaces. They are mostly caused by heavy rainfall in the upstream watershed. They may also appear as result of catastrophic events as dam or levee breaks, or mudslides or debris flow. ... Mehr lesen

Extraction of 13.56 MHz NFC-Reader Antenna Parameters for Matching Circuit Design

Prof. Dr.-Ing. habil. A. K. Palit [1],
[1] ZF-Lemfoerder Electronic GmbH, ZF-Friedrichshafen AG. Group, Espelkamp, Germany

Introduction: RFID system uses a Transponder and the near field communication (NFC) antenna and a matching circuit (Figure-1) in which at least latter two must be optimally designed for a higher efficiency. Typically, RFID antennas are flat inductive coils with 2 to 4 turns and are ... Mehr lesen

Simulation Apps for Teaching Engineering Delivered via COMSOL Server™

W. M. Clark [1],
[1] Worcester Polytechnic Institute, Worcester, MA 01609, US

In the Chemical Engineering Department at Worcester Polytechnic Institute we use COMSOL Multiphysics® not only as a modeling tool for research and to teach applied math modeling to advanced students, but also as a convenient tool to help undergraduates learn engineering fundamentals. In ... Mehr lesen

Solving Time-Dependent Optimal Control Problems in COMSOL Multiphysics

I. Neitzel[1], U. Prüfert[2], and T. Slawig[3]
[1]DFG priority program SPP 1253, Technische Universität Berlin, Berlin, Germany
[2]DFG research center Matheon, Technische Universität Berlin, Germany
[3]DFG Cluster of Excellence The Future Ocean, DFG priority progam SPP 1253, Christian-Albrechts-Universität zu Kiel, Kiel, Germany

We use COMSOL Multiphysics to solve time-dependent optimal control problems for partial differential equations whose optimality conditions can be formulated as a PDE. For a class of linear-quadratic model problems we summarize known analytic results on existence of solutions and first ... Mehr lesen

Numerical Calculation of Effective Density and Compressibility Tensors in Periodic Porous Media: A Multi-Scale Asymptotic Method

C. Lee[1], M. Leamy[1], and J. Nadler[2]

[1]School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
[2]Georgia Tech Research Institute (GTRI), Georgia Institute of Technology

A major issue in predicting and controlling (via design) absorption properties of rigid porous media is the determination of the frequency-dependent effective density and compressibility tensors. Unlike previous research efforts which employ in-house and, oftentimes, multiple numerical ... Mehr lesen

3D Modeling of Urban Areas for Built Environment Applications Using COMSOL

J. van Schijndel[1]
[1]Eindhoven University of Technology, Eindhoven, The Netherlands

This paper presents the modeling and simulation results of wind velocities in urban areas. The main idea was to build random generated urban areas for studying the influence of different urban geometries, from relative open to more dense, on wind profiles. The Spalert-Allmaras turbulent ... Mehr lesen

Acoustic Wave Crack Detection: A First Principles Approach

R. W. Pryor [1],
[1] Pryor Knowledge Systems, Inc., Bloomfield Hills, MI, USA

Crack detection is and has been an active field of exploration, both theoretical and applied for a number of years. It is the belief of this author that the concepts presented herein explore a new methodology for the modeling and the detection of cracks and families of cracks in ... Mehr lesen

Nanoscale Heat Transfer using Phonon Boltzmann Transport Equation

S. Sihn[1,2], and A.K. Roy[2]

[1]Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio, USA
[2]University of Dayton Research Institute, Dayton, Ohio, USA

COMSOL Multiphysics was used to solve a phonon Boltzmann transport equation (BTE) for nanoscale heat transport problems. One dimensional steady-state and transient BTE problems were successfully solved based on finite element and discrete ordinate methods for spatial and angular ... Mehr lesen

Modeling Implementation of Smart Materials such as Shape Memory Alloys and Electro-Active Metamaterials

Manuel Collet
PhD
Femto-STInstitute UMR CNRS 6174 Dept Applied Mechanics,
Besancon, France

Manuel Collet is a member of the Department of Applied Mechanics of the FEMTO-ST Institute. He graduated with a degree in Mechanical Engineering from Ecole Centrale de Lyon in 1992 and obtained his PhD in 1996 about Active control of vibrating structures by mean of semi distributed ... Mehr lesen

A Finite Element Analysis on the Modeling of Heat Release Rate, as Assessed by a Cone Calorimeter, of Char Forming Polycarbonate

D. Statler[1], and R. Gupta[2]
[1]Mid-Atlantic Technology, Research and Innovation Center, South Charleston, WV, USA
[2]Department of Chemical Engineering, West Virginia University, Morgantown, WV, USA

During the pyrolysis and combustion of polymers, heat is released and is typically measured with a cone calorimeter to better assess the polymer’s flammability. Modeling heat release rate, as assessed by cone calorimetry, has not been extensively studied for char-forming polymers, such ... Mehr lesen

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