S. Zhang, M. Pal, P. Barthelemy, M. Lei
Visualization Sciences Group, Burlington, MA, USA
Shell International Exploration and Production, Rijswijk, The Netherlands
The mass and recoverability of oil and gas in unconventional reservoirs strongly depend on the understanding the petrophysical properties of the rocks at a large range of scales. Three-dimensional imaging is capable of unveiling the detailed microstructures within the rocks down to the nanometer scale. Using a multiscale imaging protocol, a Devonian shale rock sample with heterogeneities is ...
EMD Millipore Corporation, Bedford, MA USA
Membrane-based tangential flow filtration (TFF) cassettes are used for the clarification, concentration and purification of fluid streams containing macromolecules of proteins. In TFF, the protein fluid is pumped tangentially along the surface of the membrane. The feed flow along the length of channel between two membranes causes a pressure drop from the feed to the retentate end of the channel. ...
Modeling the Effect of Discrete Distributions of Platinum Particles in the PEM Fuel Cell Catalyst Layer
C.F. Cetinbas, A.K. Prasad, S.G. Advani
Center for Fuel Cell Research, Department of Mechanical Engineering, University of Delaware, Newark, DE, USA
University of Delaware, Newark, DE, USA
In this study, the basic catalyst layer (CL) structure, consisting of carbon-supported Pt particles (C|Pt) and an ionomer binder, is investigated numerically by using COMSOL. The significance of modeling discrete Pt particles on the carbon support is highlighted by comparing the cell performance results to the case in which the Pt is assumed to be distributed uniformly over the carbon support as ...
A.E. Idiart, M. Pekala, A. Nardi, D. Arcos
Amphos 21, Barcelona, Spain
The Swedish Organization for Radioactive Waste (SKB) is considering disposal High Level Wastes in a deep underground repository. Bentonite clay is planned to be used in the near-field of the waste packages as buffer material. The buffer is expected to provide a favorable environment with limited radionuclide migration due to slow diffusion and retardation by sorption and cation-exchange effects. ...
Analysis of RF Characteristics of a Compound Semiconductor Device Integrated with a Wide-Band Antenna for THz Wireless Communications
A. Tashiro, M. Nakamura, M. Suhara
Tokyo Metropolitan University, Hachioji City, Tokyo, Japan
Use of the terahertz(THz) region, which is unexplored frequency band, is investigated and expected for the next-generation high-speed wireless communication. In this presentation, we propose a monolithic integrated device by using mesa-shaped compound semiconductor and a thin-metal broadband antenna which is capable in THz operation, and we analyze several characteristics of the device by using ...
A. Yekta, D. Stemmelen, S. Leclerc
LEMTA,UMR 7563 CNRS - Université de Lorraine, 54518 VANDOEUVRE-LES-NANCY France
Considering a liquid drop in relative movement with respect to the air flow at uniform velocity, the liquid will be driven to the surface by the viscous friction. Internal vortices will appear inside the drop. This problem has already been studied in fluid mechanics and is well known as a classic problem. The idea of the present work is to resume the same analysis in a porous medium within a ...
3D Hydrogeological Modeling - From a Theoretical 2D Model through a Medium Scale Application up to a Challenge: Simulations at Basin Scale
E. Cavalli, R. Simonetti, M. Gorla, N. Ceresa
CAP Holding, Milan, Italy
An alluvial aquifer system has probably conceived as a numerical modeling hell. We have chosen COMSOL Multiphysics® for two reasons: 1) FEM methods allow to use complex geometries; 2) multiphysics simulation permits to run a single model with all phenomena. We built a section with these physics: a) Darcy's law, b) Richards' equation, c) ALE to show surface deformation, d) Hydrogeologcal ...
E. Bozelie, P. Bruins
Saxion University Enschede, Enschede, The Netherlands
In heating upgrades, most attention is paid to the boiler. When upgrading to HR++-boilers (eff of 107%) however, difficulties may occur since the high efficiency boilers are designed for water temperatures around 40°C, while the old radiators are designed for water temperatures higher than 60°C. The resulting mismatch may lead to reduced performance, a larger carbon footprint and increased ...
Kyoto University, Kyoto, Kyoto, Japan
When the production capacity of micro chemical plants is increased by numbering-up approach, it is important to realize the uniform flow distribution among the parallelized microreactors. In addition, a blocked microreactor needs to be identified as early as possible to achieve the stable long-term operation of micro chemical plants. In this research, a system that can detect a blocked reactor by ...
Tokyo Institute of Technology, Yokohama, Kanagawa, Japan
It is possible to obtain novel functions using nano-scaled structures and related physics that are impossible to be realized by conventional macro-scale technology. Thus, we are trying to understand the physics dominated by nanostructure and to develop the biosensing applications. Here, we exploit the interaction between materials and electrostatic field created by nanostructure, and introduce ...