A. Stahel, and A. Reichmuth
When milk is taken out of a refrigerator it has to be heated up to 37°C. The standard solution is to put the bottle in a bath of warm water and wait. The goal is quickly to achive a uniform temperature of 37°C, without ever exceeding 40°C. Using COMSOL Multiphysics and a measurement setup for calibration, we show that this can be improfed by using variable heating. By choosing heating ...
N. Ayuso, V. Bataller, A. Muñoz, D. Tardioli, J. A. Cuchí, F. Lera, and J. L. Villarroel
Aragón Institute for Engineering Research (I3A), University of Zaragoza, Zaragoza, Spain
Advanced Research Laboratories of I3A, Walqa Technological park, Huesca, Spain
Institute of Material Science of Aragón, CSIC-Universidad de Zaragoza, Zaragoza, Spain
Propagation models for avalanche rescue systems are studied here. The paper focuses on the through-the-snow electric field propagation at ISM frequencies, comparing several models (air model, snow model, three-layered model) and using different solving method (geometrical optics, numerical solution in Matlab and FEM with COMSOL). The simulation results are fitted to experimental data, finding ...
A. Priarone, and S. Lazzari
DIPTEM-TEC, Università di Genova, Genova, Italia; Corresponding Author: firstname.lastname@example.org
DIENCA, Università di Bologna, Bologna, Italia
The effect of the infinite length approximation on evaluating the temperature of the surface of Borehole Heat Exchangers is determined by means of COMSOL Multiphysics. In detail, two 2D models of a BHE are compared: in the first model, the domain is represented by a cross-section of the geometry, while in the second model, it is represented by an axial-section of the geometry and, thus, the BHE ...
V. Sista, and E. Bhattarchaya
Microelectronics and MEMS Lab
Department of Electrical Engineering
Indian Institute of technology Madras
A MEMS based Knudsen’s pressure gauge working in the range of 1e-5 mbar to 10 mbar is designed and simulated in COMSOL. The working principle is based on Knudsen’s forces that arise when two plates are held at different temperatures and their separation is comparable to the mean free path of the ambient gas molecules. The forces change the separation between the plates and capacitance between ...
Electro-Stimulating Implants for Bone Regeneration: Parameter Analysis on Design and Implant Position
Y. Su, R. Souffrant, D. Klüß, R. Bader, M. Ellenrieder, and H. Ewald
Department of Orthopaedics, University of Rostock, Rostock, Germany
Department of General Electrical Engineering, University of Rostock, Rostock, Germany
A common clinical treatment is the application of alternating electromagnetic fields using a screw implant to the weak bone tissue within the femoral head, which speed up the bone regeneration in case of avascular necrosis of the femoral head . In our present work the bipolar induction screw system as the depicted ASNIS S-Series screw with integrated coil and electrodes were investigated. ...
Piezoelectric Transducers and Ultrasound Imaging: Impact of Materials Properties and Multiphysics Aided Design
Marco Cati graduated cum laude and encomium citation in electronic engineering in 2001 from the University of Florence, where in 2005 he also received a Ph. D. degree in electronic engineering. In 2005 he joined the Research & Development Department of Esaote where he is currently in charge of electromagnetic compatibility (EMC) design and testing activities on ultrasound and magnetic resonance ...
S. Mackintosh, J. Rodgers, S.P. Blythe
Lifescan Scotland, Inverness, Scotland
This paper describes the modeling of a blood glucose sensor using COMSOL Multiphysics. Chemical species interaction and diffusion, coupled with electrochemical oxidation of multiple blood species produced a powerful working model used in developing and refining a range of blood glucose sensors for the commercial market.
A Coulomb Stress Model to Simulate Induced Seismicity Due to Fluid Injection and Withdrawal in Deep Boreholes
G. Perillo, G. De Natale, C. Troise, A. Troiano, M.G. Di Giuseppe, A. Tramelli
University of Naples Parthenope, Naples, Italy
INGV, Osservatorio Vesuviano, Naples, Italy
Fluid injection and withdrawal in deep wells is a basic procedure in mining activities and deep resources exploitation, i.e. oil and gas extraction, geothermal exploitation, geothermal permeability enhancement and waste ?uid disposal. All these activities have the potential to induce seismicity, as dramatically demonstrated by the 2006 Basilea earthquake of magnitude ML=3.4. The mechanism of ...
M. Wei, S. Grossman, J. Speck
Institute of Electrical Power Systems and High Voltage Engineering, Technische Universität Dresden, Dresden, Germany
The job of designing end-winding corona protection (ECP) system is one of the very important and complex phases for insulation configuration of high voltage rotating machines. This complexity stems on one hand from the highly nonlinear characteristics of the ECP material and on the other hand from the coupled multiphysics phenomena of the involved performance evaluation. Simulation based ECP ...
Lowering of the Interstitial Fluid Pressure as a Result of Tissue Compliance Changes during High Intensity Focused Ultrasound Exposure: Insights from a Numerical Model
E. Sassaroli, B. O'Neill 
The Methodist Hospital Research Institute, Houston, TX, USA
Interstitial fluid pressure (IFP) is elevated in tumors. Owing to this elevated IFP, the interstitial fluid velocity (IFV) is negligible throughout the tumor but significant near the tumor margin. Any therapeutic strategy that can lower IFP will improve drug convection within the tumor and decrease convection of drugs from the tumor margin. High intensity focused ultrasound (HIFU) has been shown ...