LASA Lab., Milan Dept., Istituto Nazionale di Fisica Nucleare, Milano, Italy
The understanding of quench, or the sudden transition to the normal state of a high-current Superconductor (SC), is fundamental for the design of a SC magnet, and it is widely discussed in the literature. This paper presents some simple COMSOL models, which are compared with well-known approximate formulae and some experimental results. These models allow a more precise description than it is ...
A. Gizzi, C. Cherubini, S. Migliori, and S. Filippi
Nonlinear Physics and Mathematical Modeling Lab, Engineering Faculty, University Campus Bio-Medico, Roma, Italy
International Center for Relativistic Astrophysics, University of Rome La Sapienza, Roma, Italy
Alberto Sordi Foundation, Research Institute on Aging, Roma, Italy
Postoperative or paralytic Ileus (PI) is a temporary aftermath of major abdominal surgeries. PI prevents the passage of food throughout the lumen leading to bloating, distension, emesis and pain. A plausible mathematical model for this phenomenology physiologically fine tuned including thermal variations, is presented here. Using COMSOL Multiphysics the existing intestinal ionic model have been ...
Q.A. Chaudhry, M. Hanke, and R. Morgenstern
School of Computer Science and Communication, Royal Institute of Technology, Stockholm, Sweden
Karolinska Institutet, Stockholm, Sweden
The mathematical modeling of the diffusion and reaction of toxic compounds in mammalian cells is tough task due to their very complex geometry. The heterogeneity of the cell, particularly the cytoplasm, and the variation of the cellular architecture, greatly affects the behavior of these toxic compounds. Homogenization techniques have been implemented for the numerical treatment of the model. ...
N. Diaz, A. Jakob, L. Van Loon, and D. Grolimund
Paul Sherrer Institut NES/LES, Villigen PSI, Switzerland
Paul Sherrer Institut NES/SLS, Villigen PSI, Switzerland
Opalinus clay is currently being proposed as a potential host rock for radioactive waste repository in deep geological formation. It is then important for performance assessments to understand the transport properties of such rocks. Clay materials are characterized by low hydraulic conductivities and diffusion is assumed to be the main transport mechanism. The studied rock is a complex assembly ...
A.W.M. van Schijndel
Eindhoven University of Technology, Eindhoven, The Netherlands
Chaotic systems may lead to instability, extreme sensitivity and performance reduction. Therefore it is unwanted in many cases. Due to these undesirable characteristics of chaos in practical systems, it is important to recognize such a chaotic behavior. The existence of chaos has been discovered in several areas during the last 30 years. However, there is a lack of studies in relation with ...
Effects of the Film Thickness on the Transient Conjugate Opticalthermal Fields in Thin Films Irradiated by Moving Sources in Back and Front Treatments
N. Bianco, O. Manca, S.Nardini, and D. Ricci
DETEC, Università degli Studi di Napoli Federico II, Napoli, Italy
DIAM, Seconda Università degli Studi di Napoli, Aversa, CE, Italy
A two dimensional transient analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. Thermal and optical nonlinearity is induced during transient heating, since the response of weakly absorbing thin films depends on temperature. The heat ...
R. Winz, N. Schröder, W. Wiechert, and E. von Lieres
Institute of Biotechnology 2, Research Centre Jülich, Jülich, Germany
Research Center for Micro and Nanochemistry, University of Siegen, Siegen, Germany
In recent years lab-on-microchip technology has become a powerful tool for micro-scale analysis of biochemical processes. In the studied system the overall process consists of transport, convection, diffusion, reaction and adsorption processes. Two compounds A and B, contained in a carrier fluid (buffer), are introduced into a reaction channel via a Y-shaped double-inlet. As the streams flow ...
A. Grünbaum, S. Petersen, H.W. Pau, and U. van Rienen
IEF funded by DFG Research Training Group 1505/1 Welisa, University of Rostock, Rostock, Germany
Otolaryngology “Otto Körner”, University of Rostock, Rostock, Germany
Modeling of 2-5 μm thin membranes into a cochlea with a width of 2 cm is computationally. The paper is focused on two approximative methods used to overcome this problem and in addition a simple model challenging of a plate capacitor with a thin membrane of different thickness in-between is presented. The results of simulations with both thin layer approximation methods are compared with ...
G. Petrone, L. Cammarata, and G. Cammarata
Department of Industrial and Mechanical Engineering, University of Catania, Catania, Italy
Ventilation and Indoor Air Quality (IAQ) are issues of very high interest, determining comfortable conditions for occupants and no-contaminated local atmosphere. The aircraft cabins are more confined and have a higher occupant density than other indoor environments such as offices or residential houses. The passengers and the crew share a closed and ventilated cabin, which brings potential risk ...
H. Jamai, A. Elamari, M. El Ganaoui, F.S. Oueslati, B. Pateyron , and H. Sammouda
LETTM, Département of physics, F.S.T, Tunisie
SPCTS UMR CNRS, Faculte of Sciences, Limoges, France
ESST-H., Sousse, Tunisie
COMSOL Multiphysics is offering an important alternative to home codes for modeling and simulation of complex problems with including coupled effects on heat and mass transfer. The present work focuses on low Prandtl number fluid melts subject to symmetry breaking and transition to unsteady regimes. These configurations are for practical interest in crystal growth industry, namely the Bridgman ...