T. Slawig, and U. Prüfert
Christian-Albrechts-Universität Kiel, Kiel, Germany
TU Bergakademie Freiberg, Freiberg, Germany
Use of COMSOL Multiphysics equation-based model capability to solve optimization and control problems. Solution of time-dependent problems with space-time finite elements. Solution of constraint optimization problems. Mathematical back-up for equation-based optimization.
A.Weddemann, D. Kappe, and A. Hütten
Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge MA, USA
Department of Physics, Thin Films and Physics of Nanostructures, Bielefeld University, Bielefeld, Germany
In principal, the calculation of the magnetic state inside a magnetic object requires the evaluation of the field in the entire unbounded space. With finite element methods restricted to finite domains, commonly auxiliary domains are employed which result in a non-physical cut-off. Not only are these additional domains result in an increased number of degrees of freedom which are strictly ...
Topology Optimization of Dielectric Metamaterials Based on the Level Set Method Using COMSOL Multiphysics
M. Otomori, and S. Nishiwaki
This presentation shows a level set-based topology optimization method for the structural design of negative permeability dielectric metamaterials incorporating the level set boundary expression based on the concept of the phase field method, and its optimization algorithm implemented by COMSOL Multiphysics. Furthermore, several design examples are provided to confirm the usefulness of the ...
Determination and Verification of the Forchheimer Coefficients for Ceramic Foam Filters using COMSOL CFD Modeling
M.W. Kennedy, K. Zhang, J.A. Bakken, R.E. Aune
Norwegian University of Science and Technology, Trondheim, Norway
Experiments have been conducted with water at velocities from ~0.015-0.77 m/s to determine the permeability of 50 mm thick commercially available 30, 40, 50 and 80 Pores Per Inch (PPI) Ceramic Foam Filters (CFF) used for liquid metal filtration. Measurements were made using two different setups, for use with the Forchheimer equation: 49 mm \"straight through\" and 101 mm diameter \"expanding ...
Optimization of Thermal Properties Identification of Complex Thin Films Using MATLAB® and COMSOL Multiphysics
N. Semmar, B. Wane
GREMI, UMR7344, CNRS-University of Orleans, Orléans Cedex 2, France
The importance of laser processing and thermal properties investigation of bulk materials and thin layers is still increasing. For thermal properties investigation many experimental systems were developed based on the photothermal effect. One of typical ways is to induce a rapid surface temperature increase is to use a pulsed laser beam, create a simplified model of this interaction, and compare ...
A Simplified Numerical Model for Simulating Sliding Door and Surgical Staff Movement in an Operating Theater
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. ...
W. Wang, K. Genc
University of Massachusetts, Lowell, MA, USA
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 ...
S. Sandoval Torres, E. Hernández-Bautista, J. Rodríguez-Ramírez, A. Carrillo Parra
Instituto Politécnico Nacional, CIIDIR, Oaxaca, Mexico
Facultad de Ciencias Forestales, Universidad Autónoma de Nuevo León, Linares, N.L. México
In this work, the numerical simulation of Mexican softwood (Pinus pesudostrobus) drying is presented by solving a physics-based model. The model was developed by considering the heat and mass transport and the representative elementary volume, which involves the solid, liquid and gas phases. We solved a system of partial differential equations by numerical factorization in COMSOL Multiphysics 3 ...
Heat Propagation Improvement in YBCO-Coated Conductors for Superconducting Fault Current Limiters - new
D. M. Djokic, L. Antognazza, M. Abplanalp, M. Decroux
DPMC, University of Geneva, Geneva, Switzerland
ABB Corporate Research Centre, Dättwil, Switzerland
YBCO Coated Conductors (CCs), used for applications in Resistive Superconducting Fault Current Limiters (RSFCLs), are known to have insufficiently high Normal Zone Propagation Velocity (NZPV) during quench events. The improvement can be made by enhancing the thermal conductivity of YBCO-CCs with no decrease in the electrical resistivity. We studied the advantage of multilayered structures grown ...
Optimization of Bending-Type Ultrasonic Transducers with Rotational Symmetry Using COMSOL Multiphysics®
M. Jungwirth and M. Rabl
Wels School of Engineering, Upper Austria University of Applied Sciences, Wels, Austria
Ultrasonic sensors are commonly used for a wide variety of non-contact presence, proximity or distance measuring applications in industry, especially the automotive branch. This paper shows how the radiation properties of bending-type ultrasonic transducers with rotational symmetry depend on shape, dimensions and material parameters. In order to determine their dependencies, the behavior of such ...