Z. Shi, X. Wang, and Z. Zhang
Oakland University, Rochester, MI
Two different two-dimensional mathematical models of the one PEM fuel cell are modeled using COMSOL Multiphysics, each considering a different cross-section. The first Models considers the influence of fluid behavior in the channel, while the second considers the interdigitated flow pattern. Results, including the mass concentration, the polarization curve, potential distribution and velocity ...
Department of Chemical Engineering, University of Washington
Viscoelastic fluids have first normal stress differences even in rectilinear flow. Thus, they are more complicated than purely viscous non-Newtonian fluids modeled as a power-law model or Carreau model. Viscoelastic effects must be included when modeling the flow of polymer melts and concentrated polymer solutions in situations for which the normal stresses matter. The extrudate swell problem ...
COMSOL Modelling of the Gas Mixing Process in a Ripple Reducer for NPL’s Time Division Dilution System
J. Wang, B.A. Goody, and M.J.T. Milton
National Physical Laboratory, Teddington, Middlesex, UK
The mixing process of a ripple reducer designed for a time division dilution system (TDD) that dynamically generates calibration gas mixtures is modelled in 2D using COMSOL Multiphysics. The model can been used to visualize and optimize the mixing process and extract parameters of interest at chosen times and positions. The simulated time response of an analyte concentration agrees with ...
B. Srinivasan, S. Tung, Y. Li, and M. Varshney
 Department of Mechanical Engineering, University of Arkansas
 Department of Biological and Agricultural Engineering, University of Arkansas
The impedance based biosensor utilizes the electrical impedance measurements between interdigitated electrodes integrated into a microchannel containing the target cells in a suspension medium. The detection is based on measuring the change in impedance caused by the presence of bacteria. In this paper we describe the simulation of impedance measurements using the electromagnetics module of ...
O. Falou , J.C. Kumaradas, and M.C. Kolios[1,2]
 Dept. of Electrical and Computer Engineering, Ryerson University
 Dept. of Physics, Ryerson University
A finite-element model of wave propagation using COMSOL Multiphysics has been developed to solve the problem of ultrasound scattering from spherical structures. This model will be used to predict ultrasound backscatter from cells for ultrasound tissue characterization, and scattering from microbubble contrast agents. In this paper, we discuss an improvement to our model by using a ...
V. Mathur, J. Li, and W.D. Goodhue
Photonics Center, Department of Physics and Applied Physics, University of Massachusetts, Lowell
In this work a micro-cantilever optical-MEMS sensor based on the AlGaAs system is designed and modeled. The device consists of two micro-cantilever beams perfectly aligned with the free ends separated by approximately 200 nm up to 2000 nm. The finite element method (FEM) (COMSOL Multiphysics) has been employed here to model the structural deformation and light propagation through the device. ...
S.D. Ekpe, F. Jimenez, and S.K. Dew
University of Alberta, Edmonton
This work is focused on the coupling of a Monte Carlo code with COMSOL Multiphysics conduction/convection, and electrostatic modules in solving fluid-Poisson model for the plasma properties for a practical DC magnetron low pressure plasma discharge. The magnetostatic module was used in calculating the required magnetic field.
Simulation of the Capacitive Double Layer at the Interface between Microelectrodes and Cortical Tissue Using Comsol Multiphysics and SPICE Modeling
R.M. Field, and M. Ghovanloo
NC-Bionics Laboratory, North Carolina State University
The interface between microelectrodes and biological tissue is of great interest to researchers working on extracellular stimulation. In this paper, we outline a method used to model the complex double layer capacitance at the interface between the electrodes and the cortex. This model relies on the combined power of SPICE, MATLAB, and COMSOL Multiphysics. The goal of this model is to ...
Material Property Data
These slides are from a Poster presented at the Boston User’s Conference. They will explain how you can use MatWeb to automatically add any of our 60,000 material specifications to you COMSOL material library.
Tanai L. Marin,
Faculty of Physics and Mathematics Sciences,
Department of Mining Engineering,
University of Chile,
A method for the solidification of a free surface liquid phase is presented and solved with COMSOL Multiphysiscs using a fixed grid. In this case, the Level set method with phase re-injection for mass conservation is used to prescribe the movement of the free surface of the liquid droplet, whereas a modified version of the method presented by Voller and Prakash is used to account for the ...