J. H. K. Haertel , K. Engelbrecht , B. S. Lazarov , O. Sigmund ,
 Technical University of Denmark, Roskilde, Denmark
 Technical University of Denmark, Kgs. Lynby, Denmark
1. Introduction The topology optimization method is becoming increasingly popular as a design tool for multiphysics systems [1,2]. Topology optimization of fluid-thermal systems has been presented for example in  for forced convective heat transfer and in  for natural convection problems. In this work, topology optimization including density filtering and projection is applied to ...
A Practical Method to Model Complex Three-Dimensional Geometries with Non-Uniform Material Properties Using Image-based Design and COMSOL Multiphysics®
J. Cepeda, S. Birla, J. Subbiah, H. Thippareddi
Department of Food Science & Technology, University of Nebraska, Lincoln, NE, USA
Department of Biological Systems Engineering, University of Nebraska, Lincoln, NE, USA
Geometries with heterogeneous material properties are typically defined as a set of multiple parts, each part representing a different material. However, assembling or defining the individual parts of complex geometries can be difficult. A practical method based on image-based mesh generation, a custom algorithm for labeling materials, and interpolation functions of COMSOL Multiphysics® can be ...
Heat Generation Modeling of Two Lithium Batteries: from the Cell to the Pack in COMSOL Multiphysics® Software
J. Stoudmann , R. Rozsnyo , T. Mackin , J. Dunning 
 Haute École du paysage, d'ingénierie et d'architecture, Genève, Switzerland
 California Polytechnic State University, San Luis Obispo, CA, USA
A thermal model to predict the heat generation during the charge and discharge of a battery pack is an essential tool to manage the thermal behavior, performance and life of the batteries. In this work, a battery cell is modeled in COMSOL Multiphysics® using the Batteries and Fuel Cells module.
D. Droste, F. Lindner, C. Mundt, M. Pfitzner
Universität der Bundeswehr, Munich, Bavaria, Germany
In this study we investigate the heat and mass transfer in a porous media with phase change. The liquid fluid is injected from one side and heated from the other side, where it leaves the porous material in a gaseous state. Dominant forces are capillary interactions and two-phase heat conduction. To model the process we use a two-phase mixture model on a macroscopic scale. This model is ...
A. M. Melcher , C. Ziebert , B. Lei , M. Rohde , H. J. Seifert 
 Karlsruhe Institute of Technology, IAM-AWP, Karlsruhe, Germany
 Karlsruhe Institute of Technology, Karlsruhe, Germany
In this work the coupled electrochemical-thermal model for a lithium-ion battery (LIB) based on porous electrode theory has been extended with contributions coming from exothermic side reactions based on an Arrhenius law to model abuse mechanisms, which could lead to a thermal runaway. These extensions have been modeled with a constant fuel model and for specified current profiles and exterior ...
Wayne State University, Detroit, MI, USA
This study set up a numerical model in COMSOL Multiphysics® and simulated the underground temperature over 100 years. The long-term underground temperature around an energy pile was investigated without considering groundwater movement. Parameters and boundary conditions were examined before the simulation. The temperature changes at different depths and distances were presented. Temperature ...
S. Das, J. Li, R. Hui
University of Kansas, Lawrence, KS, USA
Kansas State University, Manhattan, KS, USA
The adoption of micro- and nanostructured electrodes is a promising technique to improve the performance of Li-ion battery, which increases the electrode surface area and improves the efficiency of ion exchange between the electrode and electrolyte. This performance improvement is supported by the results of our numerical simulation based of a Li+ battery in COMSOL Multiphysics® software. The ...
A. Métais , S. Matteï , I. Tomashchuk , S. Gaied 
 ArcelorMittal, Montataire, France
 Laboratoire Interdisciplinaire Carnot de Bourgogne, Université Bourgogne Franche Comté, France
Laser Welded Blank solutions enable to reduce vehicles weight and to optimize their crash performances by means of simultaneous tuning of different grades and thicknesses. The present work aims to characterize numerically and experimentally materials mixing during laser welding. For better understanding of materials mixing based on convection-diffusion process in case of full penetrated laser ...
V. Dhinakaran, S. Khope, N. S. Shanmugam , K. Sankaranarayanasamy
National Institute of Technology, Tiruchirappalli, Tiruchirappalli, Tamil Nadu, India
Plasma Arc Welding (PAW) is one of the important arc welding processes commonly used in electronics, medical, automotive and aerospace industries due its high accuracy, finishing, and ability of welding any hard materials. It is an extension of Tungsten Inert Gas welding (TIG or GTAW). PAW has been unnoticed because it is more complex and requires more expensive equipment compared to other ...
A. Kylili , M. Theodoridou , I. Ioannou , P. A. Fokaides ,
 Frederick Research Center, Cyprus, Nicosia, Cyprus
 University of Cyprus, Nicosia, Cyprus
A time-dependent study was conducted using COMSOL Multiphysics® (Conjugate Heat Transfer interface and Heat Transfer with Phase Change feature) for the numerical investigation of the thermal performance of novel Phase Change Material (PCM)-enhanced plasters for their incorporation in buildings located in summer-dominant environments. Four 3-dimensional (3D) model designs of building elements are ...