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. ...
C. F. Gomez, R. Schunk, R. F. Coker, J. Knox
NASA Marshall Space Flight Center, Huntsville, AL, USA
The objective of this simulation effort is to develop a mathematical model of vacuum desorption on a POC (Proof of Concept) canister loaded with Zeolite 13X/5A . This canister contains a pelletized adsorption bed which is used to adsorb H2O and CO2. Once this bed is fully saturated with an equilibrium loading, desorption is then accomplished by reducing the pressure to near vacuum. This type of ...
A. Nardi, L. M. deVries, A. Sainz, J. Molinero
Amphos 21 Consulting, Barcelona, Spain
iCP (Nardi et al, 2014) is a software that couples two standalone simulation programs: COMSOL Multiphysics® and PHREEQC (Parkhurst & Appelo, 2013). The tool is ideal for applying multiphysics and geochemistry in Earth Sciences. Flexibility of the two coupled codes result in an extensive list of modelling areas, offering good opportunities for R+D. The iCP 1.0 is the version of the ...
T. C. Zhu, B. Liu
University of Pennsylvania, Philadelphia, PA, USA
Singlet oxygen (1O2) is the major cytotoxic agent that kills cells during photodynamic therapy (PDT). Based on a previously-developed model, the distance-dependent reacted 1O2 can be numerically calculated using finite-element method. We improved the model to include microscopic kinetic equations of oxygen diffusion from uniformly distributed blood vessels to the adjacent tissue. The blood ...
J. Ebert, S. Ghosal, A. Emami-Naeini
SC Solutions, Sunnyvale, CA, USA
This paper describes the development of a COMSOL model of Electro-Chemical-Mechanical Planarization (ECMP) that was validated with experimental data. ECMP is used for processing of semiconductor wafers. We developed a 2D model of flow of phosphoric acid solution (the electrolyte) between two parallel plates that focuses on the physics and electrochemistry in ECMP. The model includes steady-state ...
F. Ferrero, M. Kluge, R. Zeps, T. Spoormaker
BAM Federal Institute for Materials Research and Testing, Berlin, Germany
Chairman PlasticsEurope Fluoropolymers TFE Safety Task Force, Du Pont De Nemours, Dordrecht, The Netherlands
The self-ignition of tetrafluoroethylene (TFE) caused by contact with hot surfaces has been analyzed with the help of simulations performed with COMSOL Multiphysics®. The current study focuses on large-scale heated reactors for the industrial production of polytetrafluoroethylene (PTFE) from TFE at high pressures. Simulations of the self-heating and consequent self-ignition of TFE in a 100-dm3 ...
Simulation and Experimental Analysis of Drug Release Rates from Magnetic Nanocomposite Spheres - new
L. Saeeednia, H. Mehraein, F. Abedin, K. Cluff, R. Asmatulu
Department of Mechanical Engineering, Wichita State University, Wichita, KS, USA
Department of Bioengineering, Wichita State University, Wichita, KS, USA
Targeted drug delivery systems have been wildly studied in cancer therapy due to the toxicity of most of chemotherapeutic drugs. Nanoparticles can be attached to the small molecules of the drugs and serve as drug carriers to deliver the drug molecules into the area of interest. In this research, polymeric microspheres containing biodegradable poly(D, L-lactide-co-glycolide) (PLGA), magnetic ...
I. Neitzel , R. Kreczkiuski ,
 FATEB, Telemaco Borba, Paraná, Brasil
A obtenção de polpa celulósica antecede a produção de papel e envolve a separação das fibras da madeira mediante a utilização de energia mecânica, térmica, química ou a combinação desses processos. Esta operação é realizada em um reator, tubular, cilíndrico e vertical (tipicamente 6 m de diâmetro e 50 m de altura), denominado genericamente de digestor. A madeira é alimentada pelo topo na forma ...
J. Torres, and D. Montane
Centre Huile Lourde Ouvert et Experimental (CHLOE), University of Pau, France
Department of Chemical Engineering, Virgili University, Tarragona, Spain
Steam Reforming of Ethanol using a Catalytic Wall Reactor (CWR) was successfully studied using COMSOL Multiphysics. A mathematical model was used to describe the reactor performance in terms of the main variables and dimensionless groups. Simulations showed that at specified conditions CWR maintains a thermal performance adequate for evaluating catalysts under a uniform temperature profile. CWR ...
H. Rouch and O. Geoffroy
INOPRO, Villard de Lans, France
High temperature processes are used in a large variety of industrial application. Simulation helps to solve technological problems and increase energy efficiency in case of industrial scale simulation. We present in this paper a research equipment simulation. The aim is to increase knowledge of temperature field in the crystal growth region in order to give researcher some important information ...