M. Zell, D. Cronin, D. Morgan, F. Marra, and J. Lyng
School of Agriculture, Food Science and Veterinary Medicine, Agriculture and Food Science Centre, College of Life Sciences, UCD Dublin, Ireland
Dipartimento di Ingegneria Chimica e Alimentare, Università degli Studi di Salerno, Italy
Pasteurization of solid food undergoing ohmic heating has been analyzed using COMSOL Multiphysics on the basis of a previously validated multiphysics model. The simulation of pasteurization by ohmic heating involves simultaneous solution electrical potential within the food, heat transfer, and the kinetics transport of death of microorganisms. In the model, thermo-physical and electrical ...
H.C. Wong, K.N. Cho, and W.C. Tang
Department of Biomedical Engineering, University of California, Irvine, California, USA
Atherosclerosis causes the deposition of plaque on the inner walls of arteries, which leads to restricted blood flow. Using the balloon angioplasty procedure, stents can be inserted and expanded in the atherosclerotic artery. We used COMSOL Multiphysics Structural Mechanics, Solid Stress-Strain module to perform static, large deformation analyses. Our results show that lower stent stresses were ...
L. Yuan and P.C. Pedersen
Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
Finite element models using COMSOL Multiphysics and MATLAB were developed to solve the problem of stress distribution interior homogeneous, isotropic, incompressible elastic solid material under known vertical external compression with a rectangular contact surface. Moreover, comparison between these results and analytical solutions was used to further validate that stress drops off with ...
Q.A. Chaudhry, M. Hanke, and R. Morgenstern
School of Computer Science and Communication, Royal Institute of Technology, Stockholm, Sweden
Karolinska Institutet, Stockholm, Sweden
The mathematical modeling of the diffusion and reaction of toxic compounds in mammalian cells is tough task due to their very complex geometry. The heterogeneity of the cell, particularly the cytoplasm, and the variation of the cellular architecture, greatly affects the behavior of these toxic compounds. Homogenization techniques have been implemented for the numerical treatment of the model. ...
COMSOL Multiphysics® as a Tool for Reducing Animals in Biomedical Research: An Application in Dermatology
F. Rossi and R. Pini
Istituto di Fisica Applicata “Nello Carrara”, Consiglio Nazionale delle Ricerche, Firenze, Italy
In biomedical research the use of animal models gives rise to several ethical problems. COMSOL Multiphysics® may be used as a non-animal technique, very useful in overcoming all these concerns. In this presentation a particular application in dermatology is shown. Bioheat equation mode and diffusion approximation were used to design a theoretical model of blue LED light interaction with an ...
E. Bertarelli, R. Ardito, E. Bianchi, K. Laganà, A. Corigliano, G. Dubini, and R. Contro
Department of Structural Engineering, Politecnico di Milano, Milano, Italy
In this work, an electrostatic diaphragm micropump is investigated by means of COMSOL Multiphysics®. A fluid-dynamic model is adopted to evaluate the fluid flow characteristics inside the pumping chamber, in static conditions. In parallel, electromechanical quasi-static simulations are performed to evaluate the occurrence of membrane movement and pull-in phenomena. Finally, a simplified ...
S. Lazzari, A. Priarone, and E. Zanchini
DIENCA, University of Bologna, Bologna, Italy
A numerical investigation of the long-term performance of double U-tube borehole heat exchanger (BHE) fields, in the case of non-negligible effects of groundwater movement, is performed by means of COMSOL Multiphysics. Two time periodic heat loads, with a period of one year, are studied: Q1, with a partial compensation between winter heating (principal load) and summer cooling; Q2, with no ...
Early Breast Cancer Detection using Patient Symptomatic Breast Images by Finite Element Analysis Aided by COMSOL
Tan Ming Sien
Department of Chemical and Natural Resources Engineering, University of Malaysia Pahang, Pahang, Malaysia
Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore
Center for Excellence for Fluid Flow Research, University of Malaysia Pahang, Pahang, Malaysia
In this project, we attempted to determine the drug concentration in a breast cancer tumor after a drug has been delivered. We created a COMSOL Multiphysics® finite element model. We investigated the relationship between drug delivery efficiency and parameters such as diffusivity, deepness of the tumor, and the temporal and spatial placement of the transdermal patch that delivers the drug. We ...
Modeling of Noise Produced by Offshore Wind Turbines with Different Foundations and Effects on the Marine Environment - new
B. Marmo , I. Roberts 
Xi Engineering Consultants, Edinburgh, Scotland, UK
Vibration produced by offshore wind turbines during their normal operation transmits through the tower into the foundation where it interacts with the surrounding water and is released as noise. The noise produced by offshore wind turbines can be detected by fish and marine mammals and may lead to alteration of their behavior. Given that noise is emitted at the interface between the foundation ...
F. Beltrán-Mejía[1, 2], C. M. B. Cordeiro
Universidade Estadual de Campinas - UNICAMP, SP, Brasil
Atualmente no Instituto Nacional de Telecomunicações (INATEL), Santa Rita do Sapucaí, MG, Brasil
Uma fibra óptica retorcida pode se converter em uma estrutura longitudinalmente invariante através de uma transformação de coordenadas. O anterior permite fazer um analise de modos transversais da fibra, servindo para estudar a geração de modos com momento angular orbital (OAM). Atualmente, os modos OAM se encontram em diversas aplicações como na microscopia e nas telecomunicações entre outros.