E. Amores Vera, J. Rodríguez Ruiz
Centro Nacional del Hidrógeno, Puertollano, Spain
One of the most critical aspects on water electrolysis is gas-liquid separation, especially in systems with forced convection. The main problem of this kind of circulation is that a gas fraction could return to the electrolysis circuit. A suitable design of separator devices could be a solution in order to avoid a gas return to the electrolysis circuit. In this sense, the use of deflectors might ...
R. E. White, and Long Cai
R.E. White & Associates LLC, Columbia, South Carolina, USA
Department of Chemical Engineering, University of South Carolina, Columbia, South Carolina, USA
The existing lithium ion battery model in COMSOL’s Multiphysics software is extended to include the thermal effects. The thermal behavior of a lithium ion battery is studied during the galvanostatic discharge process with and without a pulse. The existing lithium ion battery model in COMSOL 3.5a is extended by adding an energy balance and the temperature dependence of properties of ...
D. Adair, K. Ismailov, Z. Bakenov
School of Engineering, Nazarbayev University, Astana, Kazakhstan
CPS, Nazarbayev University, Astana, Kazakhstan
Institute of Batteries, Astana, Kazakhstan
A design for the thermal management of the media used for packing Li-ion batteries used in hybrid and electric vehicles has been developed. The design satisfies all thermal and physical issues relating to the battery packs used in vehicles such as operating temperature range and volume, and, should increase battery life cycle and charge and discharge performances. Particular attention was ...
H. White, L. Luo
Department of Chemistry, University of Utah, Salt Lake City, UT, USA
A characteristic feature of nanochannels is that surface properties (e.g., electrical charge) play a more significant role in the transport of fluid and electrolyte. Two oppositely directed flows (electroosmotic flow and pressure-driven flow) determine the flow profile at the nanopore orifice as well as electrolyte distribution. Once there are two electrolyte solutions with different ...
CFD Modeling and Analysis of a Planar Anode Supported Intermediate Temperature Solid Oxide Fuel Cell - new
N. Lemcoff, M. Tweedie
Rensselaer Polytechnic Institute Hartford, Hartford, CT, USA
Enthone, West Haven, CT, USA
A planar anode-supported intermediate temperature solid oxide fuel cell operating on syngas fuel at 750°C was analyzed in this study. The effects of varying syngas fuel inlet compositions on species and temperature distributions, water gas shift reaction rate, potential for carbon formation and electrochemistry were considered. A 2-D COMSOL® model was developed which included separate defined ...
Current Density Distribution and Material Removal Behavior on the Graphite/Iron-matrix Interface in Cast Iron Under Pulse Electrochemical Machining Conditions
O. Weber, R. Kollmannsperger, D. Bähre
Center for Mechatronics and Automatization, Saarbrücken, Germany
Institute of Production Engineering, Saarland University, Saarbrücken, Germany
The Pulse Electrochemical Machining is especially suitable for the precise production of complex geometric contours with high precision and high surface quality demands in workpieces in series manufacturing. During this process, the negative structure of an electrode is copied to the workpiece without sub-surface damages. An adequate knowledge of the current density distribution and thus of the ...
Large and High Power Cylindrical Batteries - Analysis of the Battery Pack Temperature Distributions Using the COMSOL Multiphysics® and MATLAB® Simulation Softwares - new
O. Capron, A. Samba, N. Omar, H. Gualous, P. Van den Bossche, J. Van Mierlo
MOBI - Mobility, Logistics and Automotive Technology Research Centre, VUB - Vrije Universiteit Brussel, Brussels, Belgium
Laboratoire LUSAC, Université de Caen Basse Normandie, Cherbourg-Octeville, France
The temperature distributions inside two packs (in-line and staggered) made of large cylindrical lithium iron phosphate cells (of 18 Ah nominal capacity) are analysed in this paper during a 90 A constant discharge current. The analysis of the battery packs temperature distributions is based on the results obtained with a two-dimensional modelling approach. For both packs, the simulations ...
A. Samusenko, Yu. Stishkov, P. Zhidkova
Saint Petersburg State University, Research and Educational Center “Electrophysics”, St Petersburg, Russia
Ionic wind is the gas flow induced by the corona discharge. Ions produced by corona are accelerated by electric field and transfer their momentum to neutral molecules. Using ionic wind one can convert electric energy to kinetic energy of air flow almost directly. The phenomenon of ionic wind finds applications in electrostatic precipitators and ionizers. It is difficult to solve the complete ...
Kesoku Engineering System Co., Ltd.,
The tertiary current distributions on rotating electrodes are studied in this work. An acid copper sulfate electrolyte is used within an electrochemical cell of practical dimensions. The distributions of ion concentrations are obtained by the two-dimensional fluid flow simulation and the solution of mass-transport equations based on axial symmetry.
Primary Current Distribution Model for Electrochemical Etching of Silicon through a Circular Opening
A. Ivanov , U. Mescheder ,
 Hochschule Furtwangen University, Furtwangen im Schwarzwald, Germany
Primary current distribution model for anodization of low-doped p-type silicon through a circular opening in frontside insulating mask is developed. The model is applied in two regimes of the process – pore formation and electropolishing – by definition of current density dependent functions of porosity and dissolution valence based on experimental results. As found also experimentally, ...