Modeling of Drying of Cellular Ceramic Structures: Coupled Electromagnetic and Multiphase Porous Media Model
A. Dhall, G. Peng, G. Squier, M. Geremew, L. Bogaczyk, J. George, W.A. Wood, and A.K. Datta
Biological and Environmental Engineering, Cornell University, Ithaca, New York, USA
Manufacturing Technology & Engineering, Corning Inc., Sullivan Park, Corning, New York, USA
Corporate Research, Corning Inc., Sullivan Park, Corning, New York, USA
Cellular ceramic substrates are extensively used for pollution control systems in vehicles. The manufacturing process of them can involve microwave drying. In this study, we describe the development of a modeling framework for the microwave drying process of these substrates. The transport model is implemented in COMSOL 3.5a using 4 PDEs: 1) Convection-Conduction for temperature, 2) Convection ...
P. Cendula, S. Kiravittaya, J. Gabel, and O.G. Schmidt
Institute for Integrative Nanosciences, Dresden, Germany
Strained wrinkled and flat nanomembranes have different bending properties when they are released from the underlying substrate. This is caused by increased bending rigidity of the wrinkled film in one direction. We provide theoretical and numerical analysis of the directional rolling of wrinkled films, which is important for positioning rolled-up tubes on the short mesa edge during fabrication.
B. Ottosson, Y. Jouahri, C. Rusu, and P. Enoksson
Imego AB, Gothenburg, Sweden
Chalmers University of Technology, Gothenburg, Sweden
The objective of this work has been to realize a feasibility study of a cooling device for a SQUID sensor using liquid nitrogen flowing through micro channels. The design consists of an epoxy cylindrical vacuum vessel skewed by a silicon microchannel heat sink. The SQUID sensor is situated directly on top of the microchannel heat sink. The device is used at room temperature and should be able to ...
C. Trenado, D. Strauss[1,2], and M. Wittmar
Computational Diagnostics & Biocybernetics Unit, Saarland University Hospital, Homburg, Germany
Leibniz-Institute for New Materials, Saarbrücken, Germany
Progress in coating technology has allowed for the development of free-chromate corrosion inhibitors, which are able to smartly migrate when required. In order to support the coating design, we propose a hybrid mathematical model to study the inhibitor's release by taking into account the thermodynamics and kinetics involved in the corrosion process. The proposed model is ...
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 ...
S. Agarwal, S.P. Ruhela, V. Mente, M.G. Hemanath, B. Murlidhran, V.S. Kumar, C.P. Reddy, G. Ravisankar, B.K. Sharma, K. Nagarajan, C.A. Babu, and P. Kalyanasundaram
Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India
Pyrochemical process based on molten salt electrorefining is ideally suited for reprocessing spent metallic fuels from Fast Breeder Reactors. In this work, a heat transfer analysis of the Electrorefiner cell was conducted to develop a basic tool for designing of the engineering–scale Electrorefiner. The focus of this work is to find out steady state temperature profiles of cover gas and molten ...
A. Chanda, A.R. Choudhury, G. Ray, K. Dasgupta, and D. Nag
Jadavpur University, Kolkata, West Bengal, India
Atherosclerosis in arteries is caused by the formation of stenosis : fatty depositions, on the artery wall. In current medicine, the practice is to observe the maximum percentage occlusion at any arbitrary cross-section and diagnose the patient on that basis, which might not always present the real picture due to non-uniformity of the stenosis thickness. The present work attempts to simulate the ...
P. Devillers, S.V. Aher, G. Fau, B. Tranain, and C. Buisson
Centre des Matériaux de Grande Diffusion, Ecole des Mines d’Alès, France
Department of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India
Centre Scientifique et Technique du Bâtiment, Champs sur Marne, France
A three dimensional COMSOL Multiphysics, transient analysis, diffusion model has been adopted to model the transfers of water in the industrial concrete floors. To take into account the different initial saturation levels at the different levels of the slab, the model is divided into three subdomains. The rise of the waterfront is also simulated and the air overpressure thereby developed at the ...
S. Maloney[1,2], Y. Li[1,2], G. Auner, and J. Smolinski
Wayne State University, Detroit, MI, USA
Lawrence Technological University, Southfield, MI, USA
We are working on a microfabricated lysing chip that uses a piezoelectric actuator to provide ultrasonic energy to break apart cells. The device contains pillars with varying dimensions. We hypothesize that increasing the aspect ratio of pillars will increase the efficiency of the transfer of ultrasonic energy into the fluid phase and enhance the lysing efficiency. The fluid structure ...
ZINK Imaging, Bedford, MA, USA
In direct thermal printing, media is exposed to heat pulses from a print head carrying a linear array of resistive heaters. In this study we investigate the degree to which a thin substrate can be combined with a more compressible sub-layer to provide a composite structure that will hug the heaters. A 3D view of the model using COMSOL Multiphysics shows a section of the glass bump ...