D. Peyrard, Ph. Vervier, S. Sauvage, J.M. Sánchez-Pérez, and M. Quintard
 Laboratoire d’Ecologie des Hydrosystèmes, Toulouse
 Institut de Mécanique des Fluides de Toulouse
The hyporheic zone is defined as an area where water and matter exchange through the sand, gravel, sediments and other permeable soils under and beside streams. Its impact on the hydro-system function is determined by the proportion of subsurface biogeochemical reactions and the fluxes of water exchanging with the hyporheic zone and flowing through the porous sediments. The objective of our ...
University of Utah
In this presentation we outline the analysis methods applicable to the electrochemical driven transport in nanopores and membranes. This is a modern and ever growing research area with many different applications, some examples are: • iontophoretic drug delivery across skin, • protein ion channel based sensors, • resistive pulse counting of nanoparticles, • 3-D microbattery ...
Chemical Leachate Simulation for Environmental Safety Evaluation in Civil Engineering Applications of Construction Byproducts
National Institute for Environmental Studies, Tsukuba, Japan
This presentation shows a numerical simulation model of the chemical leachate process from construction byproducts and the chemical transport process with geochemical reactions for their environmental safety evaluation.
S.F. Neves, J.J.B.L.M. Campos, T.S. Mayor
CEFT – Transport Phenomena Research Center, Chemical Engineering Department, Porto University, Porto, Portugal
CeNTI - Centre for Nanotechology and Smart Materials, Rua Fernando Mesquita, Vila Nova de Famalicão, Portugal
A clothing system should offer the user a period of relatively comfort. However, changes in the ambient conditions over day affect the heat and mass transport in the system, influencing the user comfort perception. In order to gather information to allow the optimization of clothing systems, it is essential to understand the heat and moisture transfer occurring across multi-layer textiles. For ...
G. Sorge, G. Cammarata, and G. Petrone
University of Catania
In this paper we study the natural convection for Dual In-Line Memory Module (DIMM) systems. Numerical models are developed using COMSOL Multiphysics. The results, obtained for imposed ambient temperature and operative conditions (power supplied to the CPUs) were produced and complex fluid motion field could be detected.
Y.-C. Chan1, F.-Y. Li1, and C.-T. Lin2
1Department of Chemistry, National Chung Hsing University, Taiwan
2Department of Applied Mathematics, Providence University, Taiwan
The purpose of this study is to design a chamber for exposing hamsters to nanoparticles and to therefore examine the toxicity of that particular kind of nanoparticles. This simulation was employed to study the fluid dynamic behavior of the nanoparticle inside the chamber to determine the optimal conditions for the location and flow speed of the inlet for nanoparticles and a carrier, inert ...
Simulated Suspended Solid Concentrations of Secondary Clarifiers in the Activated Sludge Process using the COMSOL Multiphysics Program
C. Gavrila1, and I. Gruia2
1Technical University of Civil Engineering, Bucharest, Romania
2University of Bucharest, Bucharest, Romania
An activated sludge system accomplishes an enhanced biological purification of wastewater, and is the most frequently used system to purify such.The purification of wastewaters are dynamical systems, operating under important and uncontrolled variations of concentration and composition of the polluting substances. Mathematical models are essential for describing, predicting, and controlling these ...
X. Liu, S. Wang, and L. Lu
Tianjin Institute of Power Source, Beijing, China
Tianjin Institute of Power Source (TIPS) is the first, the largest and most complete electrical energy technology research institute of China. We use COMSOL Multiphysics to simulate the lithium-ion batteries. It contains: Simulation on charge-discharge behavior of lithium ion cells; Simulation on thermal and safety of lithium ion cells; Design for lithium ion cells – collector, stress; From ...
William B.J. Zimmerman
University of Sheffield
"All models are inverse problems". This presentation gives some clues to how COMSOL Multiphysics, and its integration with MATLAB, can run models 'backwards'. A number of examples are shown to exemplify the collaboration between modeling, calibration and interpolation. --------------------------------- Keynote speaker's biography: Professor WBJ Zimmerman BScEng (Princeton), MSc PhD ...
J.M. Gozálvez-Zafrilla, J.M. Serra, and A. Santafé-Moros
Chemical and Nuclear Engineering Depart., Universidad Politécnica de Valencia, Valencia, Spain
Instituto de Tecnología Química, Valencia, Spain
Oxygen transfer through ceramic membranes at high-temperature can substantially reduce costs respect to conventional separation methods. With the aim to improve the determination of the properties of the ceramic materials, a lab-scale permeation set-up was modeled using the Chemical Engineering Module of COMSOL Multiphysics®. The solution required the coupling of three domains. Gas flow was ...