O. Silva , E. Coene , J. Molinero , B. Shafei 
 Amphos 21 Consulting S.L., Barcelona, Spain
Hydrophobic meshes are a new, promising technique for the recovery of spilled oil in the ocean. They allow to recover and store oil, while filtering it from the surrounding water. They are clean, efficient and can be used in continuously. These meshes have one drawback, however: if they are submerged too deep under the water level, the high pressure will cause presence of water in the recovered ...
J.R. Puentes, T.A. Osswald, S. Schick, J. Berg
Polymer Engineering Center, University of Wisconsin, Madison, WI, USA
TEEL Plastics, Baraboo, WI, USA
The extrusion of polyolefin pipes suffers degradation due to mechanical design problems of the extrusion die that is commonly used. This study uses numerical and computational approaches to detect problematic areas in the die geometry. Simulations show that in the conventional die there are areas of stagnation and recirculation of the melt flow, resulting in greater residence times, one of the ...
Modeling of Fluid Flow and Heat Transfer During a Steam-Thermolysis Process for Recycling Carbon Fiber Reinforced Polymer
A. Oliveira Nunes, Y. Soudais, R. Barna, A. Bounacer, Y. Yang
Centre RAPSODEE - Ecole des Mines d'Albi, Albi, France
Different types of technologies to recycle carbon fiber reinforced polymer (CFRP) waste have been studied, for example: pyrolysis, solvolysis and steam-thermolysis. The steam-thermolysis is a process that combines pyrolysis and superheated steam at atmospheric pressure to decompose the organic matrix of the composite. The waste is introduced into a bench-scale reactor heated at high temperatures ...
E. Lacatus , A. Tudor , G. C. Alecu ,
 Polytechnic University of Bucharest, Romania
The confinement clean rooms used in industry are susceptible to higher count of particles per cubic meter of air after the usual work program. To decrease the economic and technological effects of particle concentration a micro-cleaning device was elaborated. A first approach of a 3D model of the device was produced and different issues were found. Using COMSOL Multiphysics software to identify ...
A. Warning , A. K. Datta ,
 Cornell University, Ithaca, NY, USA
The particle tracking model provided a deeper understanding to the experimental results. The model showed good agreement with experimental data for rotation, transport and attachment. In the attachment model, protrusions create low velocity, low shear regions increasing attachment while holes pull cells toward the surface and increase residence time on the surface increasing attachment rate.
Modelling and Simulation of Single Phase Fluid Flow and Heat Transfer in Packed Beds using COMSOL Multiphysics
S. Sachdev, S. Pareek, B. Mahadevan, A. Deshpande
Department of Chemical Engineering, BITS Pilani Goa Campus, Zuarinagar, Goa, India
Computational fluid dynamics has emerged as an advanced tool for studying detailed behavior of fluid flow and heat transfer characteristics in many chemical engineering applications like packed beds. Packed beds play an important role in various chemical industries. Hence understanding the fluid flow behavior and temperature variation in different sections of packed bed is essential. Geometric ...
Modeling of Kinetic Interface Sensitive Tracers for Two Phase Immiscible Flow in Porous Media with COMSOL Multiphysics® Software - new
A.-B. Tatomir, F. Maier, A. Jyoti, M. Sauter
Geoscience Centre of the University of Göttingen, Göttingen, Germany
The understanding of the tracer migration in two-phase porous media systems and its reaction over the fluid-fluid interfaces is a challenging task important for a number of engineering applications, e.g. oil recovery, carbon capture and storage in geological reservoirs, remediation groundwater contaminations, etc. The goal of this work is to implement in COMSOL Multiphysics® an immiscible two ...
Microscale Simulations of Catalyst Deactivation During Gas-Phase Upgrading of Biomass Pyrolysis Vapors
P. N. Ciesielski , D. Robichaud , B. Donohoe , M. Nimlos ,
 Biosciences Center, National Renewable Energy Laboratory, Golden, CO, USA
 National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, USA
Catalytic fast pyrolysis is a process by which biomass may be converted into liquid hydrocarbon transportation fuels and chemical co-products that are alternative to their petroleum-derived counterparts. Chemical compounds in raw pyrolysis vapor have high oxygen content and therefore must be deoxygenated in order to meet specifications for hydrocarbon fuels. One strategy to accomplish this is ...
V. Sharma , S. Pramanik , M. Mishra ,
 Indian Institute of Technology Ropar, Rupnagar, India
 Indian Institute of Technology Ropar, Rupnagar, India; Nordita, SE-10691 Stockholm, Sweden.
COMSOL Multiphysics® software was used to model radial source flow in two dimensional homogeneous porous media. Two-Phase Darcy's Law (tpdl) is used to model miscible viscous fingering. Fingering patterns obtained on using different mesh are discussed. Evolution from 'flowers' to 'branches' is observed in the fingering patterns. Stable displacement is generated even in the presence of unstable ...
H. Kwon, M. Hess II, R. M. Polski
Andrews University, Berrien Springs, MI, USA
Mathematical skin models play an important role in fields such as transdermal drug delivery and assessment of dermal exposure to industrial chemicals. Extensive research has been conducted on modeling skin for transdermal drug delivery; however, little effort has been made to view the skin as a permeable layer to expel waste chemicals or toxins from the body. In this work, we focused on topical ...