T. Cavalcanti, A. Lima, J. Neto
Universidade Federal de Campina Grande, Campina Grande, PB, Brasil
Introdução: A medição adequada de vazão de fluidos é de grande importância nos processos industriais, pois tem implicações diretas na qualidade, produtividade, segurança e eficiência dos processos. Assim, torna-se necessário compreendermos como os fluidos se comportam para baixas velocidades, podendo, dessa forma, projetar estruturas que possam trabalhar em uma faixa de operação ...
N. C. Murmu, and D. K. Bhakta
 Tribology Division, Central Mechanical Engineering Research Institute, M. G. Avenue, Durgapur, West Bengal, India
Gas lubricated bearing has been developed for high accuracy in precision machines and equipments. Gas lubricated bearings are mainly two types: aerostatic bearings, which require a feed of pressurized gas for their operation, and aerodynamic bearings, which generate their own internal pressure differentials. The latter generate this pressure by the action of simultaneously shearing and squeezing ...
F. Bosia, P. Olivero, and E. Vittone
Dipartimento di Fisica Teorica, Università di Torino, Torino, Italy
Dipartimento di Fisica Sperimentale, Università di Torino, Torino, Italy
Ion implantation in insulating materials leads to local variations in mechanical and optical properties that can be exploited for the fabrication of micro-structures. In particular, ion irradiation of diamond causes the formation of buried amorphised layers, with correspondent mass density and refractive index variations that depend on the level of “damage” of the crystal structure. ...
X. Ni[1,2], Z. Liu[1,2], and A.V. Kildishev[1,2]
School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana, USA
Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana, USA
The emergence of electromagnetic metamaterials has given rise to a variety of fascinating applications, including the perfect lens and the optical cloaking device. For a long time the study of the properties of metamaterials was limited to normal incidence only. However, it is extremely important to know the behavior of metamaterials especially in the area of imaging. In this paper, we use COMSOL ...
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 ...
A. Candeo and F. Dughiero
Department Electrical Engineering, University of Padova, Padova, Italy
Radiofrequency Ablation (RFA) represents a valid alternative for treating liver metastases in medically complicated patients. Conventional devices currently operate at 500 kHz, due to good conducting properties of tissues. However, the use of lower frequencies (i.e. 20 kHz) has been recently reported to enhance the treatment effectiveness, due to a more pronounced difference in electrical ...
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. ...
R. Said, R. Cotton, P. Young, A. Datta, M. Elwassif , and M. Bikson
 Simpleware Ltd, Exeter, Devon, UK
 Department of Biomedical Eng., The City College of New York, New York, NY, USA
This paper will discuss the comprehensive solution adopted for converting the 3D digital/medical images directly into the computational model. The workflow using Simpleware Software – ScanIP and + ScanFE – will be illustrated including the option for directly exporting fully compatible models to COMSOL Multiphysics. The extra functionality that allows introduction, positioning and ...
J. Caire, A. Bouh, and E. Guilminot
LEPMI, UMR 5631, INPG - CNRS, Saint Martin d’Hères, France
EPCC, Arc'Antique, Nantes, France
Restoration of archaeological materials from oceans is a major activity of Arc’ Antique. Organic materials such as wood, tissues, leathers, papers and ceramics found in sea water are always impregnated with salts. Rinsing such archaeological objects with pure water to extract the salts takes too long, so electrophoresis was used to improve the salt extraction. The objective of this ...
Transient Conjugate Optical-thermal Fields in Thin Films Irradiated by Moving Sources: A Comparison between Back and Front Treatment
N. Bianco, O. Manca, and D. Ricci
Dipartimento di Energetica, Termofluidodinamica applicata e Condizionamenti ambientali, Università degli Studi di Napoli Federico II, Napoli, Italy
Dipartimento di Ingegneria Aerospaziale e Meccanica, Seconda Università degli Studi di Napoli, Aversa (CE), Italy
A two dimensional instationary analysis of the conjugate optical-thermal fields induced in a multilayer thin film structure on a glass substrate by a moving Gaussian laser source is carried out numerically in order to compare back and front laser treatment processes. COMSOL Multiphysics 3.4 code has been adopted to solve the combined thermal and electromagnetic problem in order to compare the two ...