Simulation of Heat and Mass Transfer During Artificial Ground Freezing in Saturated Saline Groundwater
Q. Liu , R. Hu ,
 Geoscience Centre, University of Goettingen, Goettingen, Germany
 School of Earth Science and Engineering, Hohai University, Nanjing, China
With the extensive application of ground freezing method in coastal areas, the groundwater environment during ground freezing has been changed. Especially in seawater intrusion areas, groundwater salinity is high (even salinity equivalent to sea water (ca. 35g/L)). Engineering experience shows that the presence of saline groundwater will affect the formation of freezing wall. High groundwater ...
Hemodynamic Therapy of Middle Cerebral Artery Vasospasm Guided by a Multiphase Model of Oxygen Transport
S. Conrad[1,2], P. Chittiboina, and B. Guthikonda
Department of Bioinformatics and Computational Biology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
Department of Biomedical Engineering, Louisiana Tech University, Ruston, LA, USA
Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, LA, USA
Cerebral vasospasm is a complication of subarachnoid hemorrhage and other neurosurgical emergencies that reduce blood flow to the brain. Part of the approach to management of vasospasm is to improve flow through the stenotic areas by reducing by decreasing blood viscosity and enhancing flow through the stenosis. To examine the interaction of these factors, we applied computational fluid ...
K. Zhou, S. Alpay, and S. Boggs
Institute of Material Science, University of Connecticut, Storrs, CT, USA
Finite Element analysis is used to model 2-D and 3-D paraelectric-dielectric composites (BaTiO3 spherical fillers randomly distributed in constant dielectric matrix). The effective dielectric response and tunability are studied under different filler sizes and different volume fractions. The results are consistent with previous theoretical and experimental results: with the increasing of filler ...
Temperature Excursions at the Pulp-Dentin Junction during the Curing of Light-Activated Dental Restorations
M. Jakubinek[1,2], C. Neill, C. Felix, R. Price[2,3], M. White[1,2]
Departments of Chemistry and Physics, Dalhousie University, Halifax, NS, Canada
Institute for Research in Materials, Dalhousie University, Halifax, NS, Canada
Department of Dental Clinical Sciences, Dalhousie University, Halifax, NS, Canada
Heat produced during the curing of light-activated dental restorations could damage the dental pulp. Given the prevalence of composite restorations and the importance of avoiding injury to the pulp, efforts should be made to minimize the temperature increase that occurs at the pulp-dentin junction during light-curing. In this investigation we develop and evaluate a COMSOL Multiphysics FEM tooth ...
B. Bozzini, S. Maci, I. Sgura, R. Lo Presti, and E. Simonetti
Dipartimento di Ingegneria dell’Innovazione, Università del Salento, Lecce, Italy
Dipartimento di Matematica, Università del Salento, Lecce, Italy
ENEA Casaccia, Dipartimento TER, Centro Ricerche Casaccia, S. Maria di Galeria, Roma, Italy
This paper describes the numerical modeling of a key material-stability issue within the realm of Molten Carbonate Fuel Cells (MCFC). The model describes the morphological and attending electrocatalytic evolution of porous NiO electrodes and is apt to predict electrochemical observables that can be recorded during Fuel Cell operation. The model has been validated with original experimental data ...
S. Burgarella, B. Dell’Anna, V. Perna, G. Zarola, and S. Merlo
STMicroelectronics, Agrate Brianza, MI, Italy
Dipartimento di Elettronica, Università degli Studi di Pavia, Pavia, Italy
Dielectrophoresis (DEP) is a method for cell manipulation without physical contact in lab-on-chip devices, since it exploits the dielectric properties of cells suspended in a microfluidic sample, under the action of locally generated high-gradient electric fields. The DEP platform that has been developed offers an integrated solution for customizable applications. Several functional units, ...
B. Baumann, M. Wolff, J. Hirsch, P. Antonis, S. Bhosle, and R. Valdivia Barrientos
Hamburg University of Applied Sciences, Hamburg, Germany
Philips Lighting, Eindhoven, The Netherlands
LAPLACE, Université de Toulouse and CNRS, Toulouse, France
National Institute of Nuclear Research, Salazar, Ocoyoacac, Mexico
High intensity discharge lamps can experience flickering and even destruction, when operated at high frequency alternating current. The cause of these problems has been identified as acoustic resonances inside the lamp’s are tube. Here, a finite element approach for the calculation of the acoustic response function is described. The developed model does not include the plasma dynamics.
R. Brambilla and F. Grilli
ENEA - Ricerca sul Sistema Elettrico S.p.A., Milano, Italy
Karlsruhe Institute of Technology, Karlsruhe, Germany
In this paper we present a summary of our work on numerical modeling of superconductors with COMSOL Multiphysics®. We discuss the two models we utilized for this purpose: a 2-D model based on solving Maxwell equations and a 1-D model for thin conductors based on solving the integral equation for the current density distribution. The latter is useful for modeling second generation High ...
Underground Coal Fire Extinction Model Using Coupled Reactive Heat and Mass Transfer Model in Porous Media
S. Suhendra, M. Schmidt, and U. Krause
Laboratory II.2: “Flammable Bulk Materials and Dusts, Solid Fuels”, Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Green house gases emission associated with natural hazard of underground coal seam fire has been recognized as a worldwide problem leading to global warming threat. Therefore, in this paper a model to study underground coal fire is presented and the results will be devoted to strategic development of coal fire extinction technology within the framework of Sino-German Coal Fire Research ...
A.K. Dwivedi, R.M. Patrikar, R.B. Deshmukh, and G. Pendharkar
Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
Testing and verification is very important to increase reliability of a system. In water analysis its purity is verified using different test methods. Biosensors are very useful to detect the microorganisms present in water. This paper presents a method to detect E.coli bacteria in water depending upon the capacitance modulation in the presence and absence of E.coli cell, which is simulated in ...