B. Hari and C. Theodoropoulos
The University of Manchester, School of Chemical Engineering and Analytical Science, Manchester, UK
Microreactors are important alternative to conventional reactors in chemistry, chemical, pharmaceutical and semiconductor industries due to their operation characteristics such as increased mass and heat transfer, uniform flow, safety, high throughput through array configurations, smaller plant size and lower cost of production. Models for such reactors need to be able to describe both the ...
O. Krol, N. Weiss, F. Sawo, and T. Bernard
Fraunhofer Institute for Information and Data Processing, Karlsruhe, Germany
In this paper we present a novel approach for modeling spatial distributed bio- chemical and environmental processes like the growth of plants and the related biochemical reactions. The physical phenomena like flow and mass transport can be described by fluid dynamics equations, but for effects like growth rates often no analytic models are available. However, in many cases experts have ...
A. Zugliano, R. Artoni, A. Santomaso, and A. Primavera
Danieli & C. Officine Meccaniche S.p.a., Buttrio, UD, Italy
DIPIC, Università di Padova, Padova, Italy
In previous works a dissipative hydrodynamic model was used to simulate the behavior of a dense granular solid flowing through silos with simple geometries or with internal devices, showing good agreement with experimental results. That model has been upgraded taking into account the interaction between the solid itself and a nonreactive gaseous stream flowing countercurrent through it. This ...
Modeling of Drying of Cellular Ceramic Structures: Coupled Electromagnetic and Multiphase Porous Media Model
A. Dhall, G. Peng, G. Squier, M. Geremew, L. Bogaczyk, J. George, W.A. Wood, and A.K. Datta
Biological and Environmental Engineering, Cornell University, Ithaca, New York, USA
Manufacturing Technology & Engineering, Corning Inc., Sullivan Park, Corning, New York, USA
Corporate Research, Corning Inc., Sullivan Park, Corning, New York, USA
Cellular ceramic substrates are extensively used for pollution control systems in vehicles. The manufacturing process of them can involve microwave drying. In this study, we describe the development of a modeling framework for the microwave drying process of these substrates. The transport model is implemented in COMSOL 3.5a using 4 PDEs: 1) Convection-Conduction for temperature, 2) Convection ...
C. Heining and N. Aksel
Applied Mechanics and Fluid Dynamics, University of Bayreuth, Bayreuth, Germany
We study the gravity-driven film flow of a Newtonian liquid down an inclined plane. Many applications such as heat- and mass exchangers and evaporators or film coaters require undulated or rippled bottom topographies. In these cases, the interplay of gravity, surface tension and inertia leads to a response of the interface which furthermore strongly depends on the shape of the bottom topography. ...
Chief Technology Officer, COMSOL
Ed Fontes is CTO at COMSOL with specific interest in the transport-reaction products. He has 14 years experience of modeling transport phenomena in industry and 6 years of supervising research projects in Academia. Ed Fontes received his PhD in Electrochemical Engineering from the Royal Institute of Technology (Stockholm, Sweden) in 1995.
R. Inglés, J. Pallares, J.L. Ramirez, and E. Llobet
Dept. of Electronic, Electrical and Automatic Control Engineering, Universitat Rovira i Virgili, Tarragona, Spain
Department of Mechanical Engineering School of Chemical
Engineering Universitat Rovira i Virgili, Tarragona, Spain
We use finite elements simulations in order to study the fluid flow behavior in a chamber of a preconcentrator. We realized that most part of the fluid does not affect our preconcentrator because it is going out the chamber at high distance above it and parallel to the preconcentrator. So, we are wasting most part of our fluid and we need a lot of time to have a good concentrator factor. We ...
C. Wolluschek, F. Etcheverry, M. Cachile, and J. Gomba
Mecánica de Fluidos e Ingeniería Térmica, Centro tecnológico Cemitec, Noáin, Navarra, Spain
Grupo de Medios Porosos, Facultad de Ingeniería, UBA, Buenos Aires, Argentina
Instituto de Física Arroyo Seco, UNCPBA, Tandil, Argentina.
In this work, a COMSOL model that predicts velocity and concentration fields inside an X-shaped millichannel (4 mm diameter) is developed. Water and a ink low concentration are injected simultaneously in the two inlets of the device. The mass transfer problem is solved by a Fickian model (solute concentration is low compared with the solvent). The parameters in this study are: initial inlet mass ...
D. Remaoun, and A. Boutaous
Département de Physique, Université des Sciences et de la Technologie, Oran, Algérie
The present work aims to describe the behavior of the interface using the method of load transfer between fiber and matrix in a composite material. Our contribution was first to simulate the mechanical behavior of a composite, for a given radius of the fiber was able to automate the result for different rays thus different proportions of the reinforcement, the simulation was done with software ...
Y. Song, and C. Wang
Florida International University, Miami, FL, USA
Enzymatic biofuel cells (EBFCs) are miniature, implantable power sources, which use enzymes as catalysts to perform redox reaction with biological fuels such as glucose. In this study using COMSOL Multiphysics, we use an EBFC chip, having three dimensional, highly dense micro-electrode arrays, fabricated by C-MEMS micro-fabrication techniques. Glucose oxidase (GOx) is immobilized on anodes for ...