Presentazioni e Articoli Tecnici

In questa sezione troverete i lavori presentati alle Conferenze mondiali COMSOL. Le presentazioni descrivono ricerche e prodotti innovativi progettati con COMSOL Multiphysics da colleghi di tutto il mondo. I temi delle ricerche presentate abbracciano un'ampia gamma di settori produttivi e aree applicative, in ambito elettrico, meccanico, fluidodinamico e chimico. Lo strumento di Ricerca Rapida vi permetterà di trovare le presentazioni che si riferiscono all'area di vostro interesse.

Upscaling of Heterogeneous Rock Properties via a Multiscale Image to Simulation Approach

S. Zhang[1], M. Pal[2], P. Barthelemy[1], M. Lei[1]
[1]Visualization Sciences Group, Burlington, MA, USA
[2]Shell International Exploration and Production, Rijswijk, The Netherlands

The mass and recoverability of oil and gas in unconventional reservoirs strongly depend on the understanding the petrophysical properties of the rocks at a large range of scales. Three-dimensional imaging is capable of unveiling the detailed microstructures within the rocks down to the nanometer scale. Using a multiscale imaging protocol, a Devonian shale rock sample with heterogeneities is ...

Exergy Analysis of a Water Heat Storage Tank

F. Dammel[1], J. Winterling[1], K. J. Langeheinecke[2], P. Stephan[3]
[1]Institute of Technical Thermodynamics, Technische Universität Darmstadt, Germany
[2]IAV, Gifhorn, Germany
[3]Institute of Technical Thermodynamics/Center of Smart Interfaces, Technische Universität, Darmstadt, Germany

A combined heat and power (CHP) plant generates both electricity and useful heat. A heat storage tank enables a decoupling of electricity and heat delivery. In this study a cylindrical hot water storage tank is considered. Charging, holding time and discharging are numerically simulated applying COMSOL Multiphysics 4.2. The performance of the heat storage is evaluated by an exergy analysis. ...

Accelerating R&D with COMSOL: A Personal Account

Erik Birgersson[1]

[1]Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, Singapore

This presentation gives an account of how COMSOL Multiphysics® software has helped to accelerate research and development. It has been used to simulate energy systems such as fuel cells, biomedical systems such as hydrogels and human skin, and monolithic catalytic converters. Each of these systems requires a mathematical model that can accurately represent the relevant physics, and which can be ...

Improvements on Liquid Cyclotron Target Loading/Unloading System Using COMSOL Multiphysics®

F. Alrumayan[1], A. Alghaith[1], J. Schneider, [1], M. Ahmed [1], M. Al-Qahtani[1]
[1]King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia

A 3D model was developed using COMSOL Multiphysics® to study the flow dynamics of the water inside the geometry of the [13N] Ammonia target for medical application . The image attached shows a 3D model of the target. A significant improvement was noted after modifying the geometry as suggested by the model and delivery time of radioactive solution was dramatically reduced. Water and aluminum ...

Biological Effects and Therapeutic Applications of Electromagnetic Radiations

A. Singh[1], S. Maini[1], and M. Anupma[1]
[1] Department of Electrical & Instrumentation Engineering, Sant Longowal Institute of Engineering and Technology , Longowal (Deemed University), Punjab, India

The electromagnetic fields have a great influence on the behavior of all the living systems. The human body itself is a source of naturally generated electric and magnetic fields. When external signals of comparable strength flows through the human body; the nature of changes that such signals could induce in natural electrochemical processes and voltage is a subject of interest and of ...

Local Electroporation of Single Adherent Cells by Micro-Structured Needle Electrodes

K. K. Sriperumbudur[1], P. J. Koester[1], M. Stubbe[1], C. Tautorat[1], J. Held[2], W. Baumann[1], and J. Gimsa[1]
[1] University of Rostock, Chair of Biophysics, Gertrudenstr. 11a, 18057 Rostock, Germany
[2] Microsystem Material Laboratory, Department of Microsystems Engineering (IMTEK), University of Freiburg, Germany

In spite of its low throughput, Patch-Clamp is the established method for intracellular measurements of the transmembrane potential. To address this problem, we have developed new biosensor-chips with micro-structured needle electrodes (MNEs). MNE-penetration of single cells growing on the MNE-tips leads to a situation comparable to the whole-cell mode in classical Patch Clamp. MNE-penetration ...

Numerical Simulation of Heart Valve Motion and Fluid Structure Interaction

Tijerino Monge, T., Carmona Infante, V.
Costa Rica

This model studies a portion of the vascular system of a normal person, in particular the left ventricle and the mitral valve of the heart. The flowing blood applies pressure to the ventricle before, after and specially during the contraction process of the heart, thereby deforming the structure.

Carbon Foam Filled with Phase Change Materials for Passive Temperature Management

Espinoza Vallejos, P.A., Duston, C.
Technology Assessment and Transfer

FEMLAB was used to aid in the design of a novel temperature management system. The system under consideration is a heat sink consisting of a carbon foam block brazed to the inside of an aluminum enclosure. The high thermal conductivity carbon foam is structurally reinforced and filled with a phase change material. A phase change material (PCM) is a substance which releases a large amount of ...

Two-fluid modelling of an abnormal low-pressure glow discharge

Low-pressure glow discharges are of topical interest for a lot of technological applications like plasma light sources, plasma processing for surface modification, and plasma chemistry. Therefore, a detailed understanding of the fundamental processes of glow discharges is required to e.g. optimize the discharge parameters in these plasma applications. Theoretical investigations can help to ...

Modélisation d'une décharge luminescente à la pression atmosphérique

Cormier, J.M., Semmar, N., Ouni, M.F.
GREMI, UMR 6606, Orléans

Les décharges luminescentes à pression atmosphérique sont étudiées expérimentalement en laboratoire pour la valorisation des alcanes et notamment la production d'hydrogène à partir du méthane. La modélisation des dispositifs usuels est complexe compte tenu de l'aspect non stationnaire des décharges. Afin d'évaluer le poids des paramètres de réglage d'un réacteur nous avons ...

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