J. Adamek , L. Fromme 
 University of Applied Sciences Bielefeld, Department of Engineering Sciences and Mathematics, Bielefeld, Germany
In the last decades, the topic of microfluidic Electroosmotic Pumps (EOP) gained the attention of scientists all over the world. One of the greatest advantages of the electroosmotic pumps is the fact, that there are no moving parts. With the effect of electro osmosis, it is possible to generate a continuous, bi-directional, impulse-free stream of electrolyte fluid. This effect leads to a high ...
M. Jain, A. Rao, K. Nandakumar
Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, USA
The performance of a homogeneous T-mixer can be enhanced significantly by the stimulation of secondary/ transverse flows in the microchannel. Various mixing mechanisms are reported for enhancing micromixing performance such as grooves at the channel bottom, heterogeneous charge patterns etc. Most of these micromixers are studied with respect to planar geometric parameters such as groove width, ...
Hydro-Mechanical Modelling of Infiltration Test for a Bentonite-Sand Mixture: Model Verification and Parameter Identification
M. Hasal, R. Hrtus, Z. Michalec, R. Blaheta
Institute of Geonics AS CR, Ostrava, Czech Republic
The first aim of our work is to create a hydro-mechanical model (HM) of unsaturated fluid flow in bentonite-sand mixture (BSM) MX-80. The second aim is to validate and calibrate the developed model by using the data from a laboratory infiltration test of BSM. The used multi-physics model combines Richards type unsaturated flow with diffusive vapour flow and (nonlinear) elastic response of the ...
A. L. R. Paulino , E. Robalinho , E. F. Cunha , M. Linardi , R. R. Passos , E. I. Santiago 
 Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN, São Paulo, SP, Brazil
 Instituto de Pesquisas Energéticas e Nucleares – IPEN/CNEN, São Paulo, SP, Brazil; and Instituto Federal do Rio Grande do Sul – IFRS, Porto Alegre, RS, Brazil
 Universidade Federal do Amazonas – UFAM, Manaus, AM, Brazil
The performance of a PEMFC depends on several factors, including the flow inside gas channels. Low gas velocity inside the channel can make water management more difficult, possibly causing water to accumulate and condense in certain regions of the cell. In the present work, COMSOL Multiphysics software was used to visualize and describe gas flow inside the channel of a PEMFC operating with ...
S. Denys , J. van Walsem , J. Roegiers , S. Lenaerts ,
 University of Antwerp, Antwerp, Belgium
As in industrial countries, people spend most of their time indoors and the stringent heat-insulation measures in combination with deficient ventilation have a negative impact on indoor air quality, one approach for abating indoor air pollution is the integration or retrofitting of a photocatalytic oxidation or PCO reactor into continuous flow. PCO technology is very cost-effective, efficient ...
A. N. Kolborg ,
 Technical University of Denmark, Lyngby, Denmark
This project makes a first attempt at modelling fluid flow over shark skin on a microscopic level. The modeled fluid flow shows good agreement with theory. Further refinement of the model parameters holds promises of better understanding of this complex fluid flow phenomenon. The COMSOL Multiphysics® model was evaluated against micro particle image velocimetry measurements of the same flow ...
F. Alzahrani, F. Aiouache
Engineering Department, Lancaster University, Lancaster, UK
This work used the 3D CFD modeling to investigate non-uniform deactivation in packed bed reactors of low aspect ratios under steady state and dynamic operations. In order to explore the effects of condition of instability on local deactivation, detailed knowledge of flow dynamics (i.e. local structure of the packed bed, pressure drops and interstitial flow in the void space), heat and mass rate ...
An Analysis of Heat Conduction with Change of Phase with Application to the Solidification of Copper
J. Michalski, and E. Gutirrez-Miravete
Rensselaer at Hartford, Hartford, Connecticut, US
The goal of this study was to determine the possibility of using the finite element in COMSOL Multiphysics program to obtain a high accuracy solution to a moving boundary problem, specifically, the solidification of copper. A one-dimensional geometry in Cartesian coordinates was used to investigate the solidification of initially liquid copper from a chilled wall maintained at fixed temperature. ...
F. M. Alrumayan , Q. Akkam , S. Alqaryan ,
 King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
Medical Cyclotrons are used in hospitals to manufacture radiopharmaceuticals. The nuclear reaction between the Cyclotron charged particles and a material takes place inside the so-called targets. In particular, gas target is used when a specific gas is bombarded with proton particles to produce radioactive gas . For successful reaction and good production yield, heat generated due to ...
R. Busqué , R. Torres , A. Husar , J. Grau 
 Escola Universitària d'Enginyeria Tècnica Industrial de Barcelona, Barcelona, Spain
 Institut de Robòtica i Informàtica Industrial CSIC-UPC, Barcelona, Spain
The storage of hydrogen as an absorbed element in metal hydride bottles is a promising technique for energy storage. In this work, a three-dimensional model of a charging process in a metal hydride container has been developed to simulate the absorption reaction and resultant heat and mass transport phenomena in metal hydride vessels. The model has been experimentally validated showing a good ...