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 ...
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 ...
Computational Study on Transition of Oil-Water Flow Morphology due to Sudden Contraction in Microfluidic Channel - new
J. Chaudhuri, S. Timung, T. K. Mandal, D. Bandyopadhyay
Indian Institute of Technology Guwahati, Guwahati, Assam, India
The flow morphology of two immiscible fluids in a microfluidic device finds numerous applications such as emulsification, synthesis of nanomaterials , lab-on-a-chip devices and biological analysis . It offers many advantages over the conventional macroscopic devices because of its availability for higher surface to volume ratio, ability to handle small volume of fluids, easier process ...
Rheological Behaviour of Single–Phase Non-Newtonian Polymer Solution in Complex Pore Geometry: A Simulation Approach
P. Idahosa, G. Oluyemi, R. Prabhu, B. Oyeneyin
IDEAS Research Institute/School of Engineering, Robert Gordon University, Aberdeen, United Kingdom.
School of Engineering, Robert Gordon University, Aberdeen, United Kingdom.
One of the most important criteria for evaluating chemical enhanced oil recovery (EOR) processes that use polymers is its rheological behaviour which in turn account for other physical effects of adsorption and resistance factors during polymer-rock interactions. However, complete knowledge of behaviour of polymer solution in porous media has not yet been fully gained. A computational fluid ...
D. Sharma , A. Siddiqua ,
 Nitte Meenakshi Institute of Technology, Bengaluru, Karnataka, India
PCR (Polymerase Chain Reaction) is a recent well researched technique which can be employed to obtain an amplified DNA (Deoxyribonucleic Acid). A continuous flow polymerase chain reaction with integrated MEMS based design micro heater for DNA amplification is implemented. Temperature zone is obtained by natural heat conduction rather than making use of typical silicon thermal cycler. Inter ...
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. Goyal, A. Dutta, and A. K. Ghosh
 Reactor Safety Division, Bhabha Atomic Research Centre, Trombay, Mumbai, Maharashtra, India
Steam drums of a nuclear power plant separate steam from the steam water mixture and sub cooled incoming feed water returns to the reactor. The entire feed water flow is delivered to the steam drum through the feed water sparger. The feed water sparger is provided with number of inverted ‘j’ type lateral tubes to distribute the feed water in the drum for proper mixing with the separated ...
K. Stein, N. Gessner, R. Peterson, A. Wiedmann
Department of Physics, Bethel University, St. Paul, MN, USA
Undergraduate studies are carried out to examine the supersonic flow from an axisymmetric converging-diverging nozzle. Flow in the nozzle is initiated by the rupture of a diaphragm that is positioned between the nozzle and a 1-gallon pressurized air tank. Simulations are carried out in COMSOL Multiphysics® for unsteady, axisymmetric flow with the High Mach Number interface of the CFD Module. ...
R. Pandya , A. Kumar , V. Runkana ,
 Tata Research Development and Design Centre, Tata Consultancy Services, Pune, India
 Indian Institute of Technology, Delhi, India
Electrospinning is a process where high voltage is applied to produce polymer fibers of nanoscale diameter. Various polymers have been used for this process in molten form or as a solution with an appropriate solvent such as glycerol. The melt solidifies while the solvent evaporates to produce fibers. The fibers produced have properties such as high surface to volume ratio and a molecular ...
Optimization of Extrusion Processes for non-Newtonian high-Viscous Fluids with Wall Slip and Shear Thinning Effects
W. Hoffmann, M. Scholz
SiCo-Solutions, Stuttgart, Germany
Simulation of the flow behaviour of non-Newtonian fluids with high viscosities leads to special material models with specific material parameters. In this presentation, a material model consisting of 4 material parameters describing the flow itself and also the wall slip is presented. The investigations of the flow behaviour are based on COMSOL Multiphysics® using the Modules CFD, Structural ...