A.W.M. (J.) Van Schijndel , D. P. M. Jacobs ,
 Eindhoven University of Technology, Eindhoven, Netherlands
Pioneering Computational Models for the Built Environment Energy performance is becoming more important in the build environment. With better insulated buildings, the possibility of moisture problems and thermal bridges increases. There for, it is not only important to determine the energy performance of a building, but also whether moisture problems occur. There are several programs in which ...
Research Center for Power Engineering Problems of the Russian Academy of Sciences, Kazan, Russia
The influences of curvature effects and swirl intensities for Non-Newtonian viscous fluid flow in a curved tube have been numerically investigated by using COMSOL Multiphysics®. The twisted tape, which are located directly in front of the curved part, are used as swirl flow generators. The tape is twisted until it reaches an angle of 90 degrees and turns right. Swirling flow, getting into the ...
Comparison of Classic and Finned Piston Reciprocating Linear Air Compressor Using COMSOL Multiphyics® - new
M. Heidari, P. Barrade, A. Rufer
LEI, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
The current work is dedicated to develop a FEM model for compressors using moving mesh. An analytical model is already developed for a classic compressor based on mass and energy balance and is extended to a finned piston compressor. COMSOL Multiphysics® is employed to verify the analytical results and to provide an insight to detailed modeling of the system in desired areas. Moving mesh is ...
J. Blackburn , N. McCartney ,
 National Physical Laboratory, London, UK
We present computer simulation results for PEM fuel cells using COMSOL Multiphysics® software. We have developed novel PDE equations at NPL from first principles and these are more realistic than models typically used in literature. The theory includes Maxwell-Stephan and Nernst-Planck equations for the diffusion and electrochemistry as well as equations governing electrostatic and stress/strain ...
S. Patra , A. Dalal , G. Biswas , S. Shah 
 Indian Institute of Technology Guwahati, Guwahati, Assam, India
 Indian Institute of Technology Bhubaneswar, Bhubaneswar, Odisha, India
The present study manifests the several ground breaking flow phenomena arising out of hydrodynamic interactions between two microorganisms swimming inside a microchannel with close proximity. The results theorized in the present investigation scrutinizes the varying behavior of the bacteria while moving inside a micro-capillary at different Reynolds number (Re). At high Re, the two swimming ...
J. Hrdlicka, P. Cervenka, and D. Snita
Institute of Chemical Technology Prague, Prague, Czech Republic
This contribution is devoted to the mathematical modeling of the AC electroosmotic micropumps in COMSOL Multiphysics and Matlab. The mathematical model involves the microchannel surroundings and several AC-voltage driving modes. The weak form has been used for handling singularities and other problems. The system dynamic behavior and conditions at the phase interfaces will be discussed.
J. Ferdous, M. Ghaly , V. B. Kolachalama , T. Shazly[1,4]
Biomedical Engineering Program, University of South Carolina, Columbia, SC, USA
Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, USA
Charles Stark Draper Laboratory, Cambridge, MA, USA
Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA
Inferior vena cava (IVC) filters have become essential components in deep vein thrombosis treatment to prevent preventing pulmonary embolisms. Filter efficacy relies on maintaining IVC patency by preventing filter-induced thrombosis following clot capture. A computational model has been developed to determine whether a candidate filter design elicits hemodynamic patterns that promote thrombus ...
Implicit LES for Two-Dimensional Circular Cylinder Flow by Using COMSOL Multiphysics® Software - new
Keisoku Engineering System Co.,Ltd., Tokyo, Japan
In this paper, implicit Large Eddy Simulation (LES) based on finite-element analysis is performed in order to investigate two-dimensional circular cylinder incompressible flow. Implicit LES attempts time-dependent flow computation with no explicit turbulence model. Here, two types of circular cylinder with/without surface roughness, are treated. The Reynolds number Re based of the diameter of ...
F. Mechighel, B. Pateyron, M. El Ganaoui, S. Dost, and M. Kadja
Laboratory SPCTS UMR CNRS, ENSCI, Limoges University, Limoges, France
Crystal Growth Laboratory, Department of Mechanical Engineering, University of Victoria, British Columbia, Victoria, Canada
Department of Mechanical Engineering, University of Constantine, Constantine, Algeria
A numerical simulation study, using COMSOL Multiphysics®, was carried out to examine the temperature and concentration fields in the dissolution process of silicon into germanium melt. This work utilized a simplified configuration which may be considered to be similar material configuration to that used in the Vertical Bridgman growth methods. The concentration profile for the SiGe sample ...
P. A. Haris, T. Ramesh
National Institute of Technology Tiruchirappalli, Tiruchirappalli, Tamil Nadu, India
Design and manufacture of thrusters for producing very low thrust force in the range of milli or micro newtons using micronozzles has been actively developed in the last decade. The nature of propellant flow in such micronozzles differs from that of macro nozzles. In micronozzles, viscous effect dominates; hence the flow is always in laminar regime with high viscous losses. Objective of this ...