Numerical Prediction of Particle Dynamics Within a Cytometer. Application to Counting and Sizing by Impendance Measurement
HORIBA Medical, Montpellier, France
This paper describes how to numerically tackle the problem of counting and sizing particles by impedance measurement in an orifice–electrode system. The model simulate the particle dynamics submitted to strong hydrodynamic stresses through a microorifice and compute the voltage pulses generated by the modification of the inner dielectric medium. This FSI problem is solved on a moving mesh by ...
Relevance of Hydro-Mechanical-Chemical Processes Involved in the Construction and Operation of Copper Heap Leach Pads
M. Tincopa, A. Nardi, G. Roman-Ross , J. Molinero
Technic University of Catalonia (UPC), Barcelona, Spain
Amphos 21 Consulting, Barcelona, Spain
Heap leaching in the mining industry had become a sophisticated practice at least 500 years ago. It is a mineral processing technology whereby piles of crushed Run-of–Mine rock are leached with chemical solutions to extract minerals. The goal of this work is to contribute to the understanding of the behavior of a heap leach pad by using coupled Hydro-Mechanical-Chemical simulations. COMSOL ...
F. Tariq, V. Yufit, M. Marinescu, G. Cui, M. Kishimoto, N. Brandon
Imperial College London, London, United Kingdom
Solid Oxide Fuel Cells (SOFC) and Li-ion batteries (LIB) are electrochemical devices where performance is dependent on reactions inside porous electrode microstructures. Here we use tomographic techniques to probe 3D electrode structures (anodes and cathodes) at micro-nanometer length scales. Subsequently, micro/nano structural changes in electrodes are characterized and quantified. Utilizing ...
A. Mossadegh Pour, A. Dhira , R. Steinberger-Wilckensa
Department of Chemistry, University of Birmingham, Edgbaston, Birmingham, United Kingdom
Auxiliary Power Units can play an important role in reducing vehicle emissions, especially in diesel and kerosene driven vehicles. In conventional vehicles the electricity supply comes from a generator that is directly coupled to the propulsion engine. New generation of fuel cell APUs exclusively use Solid Oxide Fuel Cells with some developments in high temperature polymer electrolyte membranes ...
 Tottori University, Tottori, Tottori, Japan
We have proposed a high performance MEMS based microstructure array of micropreconcentrator (microPC) for breath diagnosis of cancer biomarkers. Our microPC has been designed based on quantitative analysis results, which gives explicit evaluation criteria for determination of microstructure array performance. We will present the quantitative analysis results performed by COMSOL Multiphysics ...
Yokohama National University, Yokohama, Kanagawa, Japan
We have developed micro/nano machines such as optically driven micro/nano pumps and spiral-shaped piezoelectric vibration energy harvesters. COMSOL Multiphysics has been used for the design and development of the micro/nano machines. For example, optical force affected to a metallic nanowire was analyzed. Power generation of a spiral-shaped piezoelectric element was evaluated. In this ...
Zeeko LTD, Coalville, Leicestershire, UK
Chubu University, Kasugai, Aichi, Japan
On one hand, the "float polishing" process consists of a tin lap having many concentric grooves, cut from a flat by single point diamond turning. This lap is rotated above a hydrostatic bearing spindle of high rigidity, damping and rotational accuracy. The optical surface thus floats above a thin layer of abrasive particles. But whilst surface texture can be smoothed to ~0.1nm rms (as measured ...
Batdalai SUKH et al.
Miyakonojo National College of Technology, Miyakonojo, Miyazaki, Japan
In this panel session we present numerical models for computing the current density, field distribution and AC losses in high-temperature superconducting tapes. The tapes have a rectangle cross section for two-dimensional geometries. The numerical models are tested by comparing the calculation results with the predictions of analytic solutions for simple geometries. We used it successively for ...
P. Vincent, E. Humphreys
College of Earth, Ocean, & Atmospheric Sciences, Oregon State University, Corvallis, OR, USA
Department of Geological Sciences, University of Oregon, Eugene, OR, USA
Introduction: Lithospheric delamination beneath the western U.S. is believed to be the driving mechanism responsible for the evolution of magmatic and topographic features observed at the surface in the western U.S.. This process requires hot asthenosphere to be in contact with the underside of cold sub-crustal lithosphere and believed to be initiated by the Yellowstone hot spot plume that due ...
P. K. Jain, J. D. Freels
Oak Ridge National Laboratory, Oak Ridge, TN, USA
Engineering design studies of the feasibility of conversion of the High Flux Isotope Reactor (HFIR) from high-enriched uranium to low-enriched uranium (LEU) fuel are ongoing at Oak Ridge National Laboratory as part of an effort sponsored by the U.S. Department of Energy’s Global Threat Reduction Initiative Reduced Enrichment for Research and Test Reactors program. COMSOL Multiphysics® models are ...