A. Mallco Carpio , M. Cortes Carmona ,
 University of Antofagasta, Antofagasta Energy Center, Antofagasta, Chile
One of the most noticeable effects in loss of performance and capacity of thermal systems is produced by altitude. This causes that the density of a compressible fluid and the atmospheric pressure are considerably reduced, causing a decrease in electrical power and thermal systems. Given this, the packages of lithium ion batteries that use forced cooling by a compressible fluid, are directly ...
陈冬 , 张佳亮 , 叶智慧 , 努莎 , 龚珂 ,
石油开采过程中，油田广泛采用多分支水平井技术以提高产量，因此研究多分支水平井对油气井产能的影响具有重要意义。本文应用达西定律接口，建立不同井眼几何尺寸的多分支水平井二维模型，分别计算产量。并且应用 COMSOL App 开发器，建立了多分支水平井 APP，可以方便非专业人士的使用。计算结果表明：（1）侧向井段长度对多分支水平井产能影响显著，侧向井段越长，产量越高；（2）侧向井段与主井眼夹角，在 25°~ 55° 时，产能较大，角度为 15° 时产能较小，同时夹角对产能的影响随开采时间逐渐增大。建议生产过程中，适当增加水平井对应的侧向井的长度，进而获得更多的油气资源；适当增加主井眼与侧向井段之间的夹角来达到增产的目的，使收益更大化；适当增加两相邻侧向井段之间的距离，提高产能。
A. El-Deib, F. Dawson, S. Bhosle, D. Buso, and G. Zissis
University of Toronto, Toronto, Ontario, Canada
LAPLACE-University of Toulouse, Toulouse, France
This work uses COMSOL to simulate the Dielectric Barrier Discharge (DBD) lamp coupled to the external electrical circuit. The coupled system is modeled to capture the effect of the electrical parasitic elements on the efficiency of the DBD which is more realistic as compared to previous trials which assumed that a perfect voltage source is applied to lamp terminals. The obtained results ...
E. Zanchini, and T. Terlizzese
Dipartimento di Ingegneria Energetica, Nucleare e del Controllo Ambientale, Università di Bologna, Bologna, Italy
The results of two thermal response tests recently performed on two vertical borehole heat exchangers (BHEs) are presented. The BHEs have the same cross section and a depth of 100 m and 120 m respectively. The evaluation of the thermal properties of the ground and grout are performed by a finite-element simulation method, developed through the software package COMSOL Multiphysics 3.4.
N.M. Bruno, C. Ciocanel and A. Kipple
Department of Mechanical Engineering, Northern Arizona University, Flagstaff, Arizona, USA
Dept. of Electrical Engineering and Computer Sciences, Northern Arizona University, Flagstaff, Arizona, USA
This paper presents the approach taken through the utilization of COMSOL Multiphysics 3.5a, to develop a model that simulates the flow of a magnetorheological (MR) fluid through a micro-channel. The model was developed as an aid in the analysis of a micropump that produces flow by means of displacement of a MR fluid slug within a microchannel.
D. Dalle Nogare and P. Canu
Department of Chemical Engineering Principles and Practice, University of Padova, Padova, Italy
This work investigates the effects of boundary conditions on the species profiles in heterogeneous catalysis, with low Péclet systems. Hydrogen combustion in Helium was chosen because of the high diffusivities. Furthermore, already at T=300°C over a Pt catalyst, kinetics is very fast and the composition gradients at the inlet extremely steep. The issue is analyzed with 1D models, ...
A. Genoese, A. Genoese, and G. Garcea
Dipartimento di Modellistica per l'Ingegneria, Università della Calabria, Arcavacata di Rende, CS, Italy
Saint-Venant general rod theory is used to calculate the elastic factors of a section through the numerical solution of a system of partial differential equations. The elastic properties so evaluated are used in a geometric nonlinear analysis of 3D beam structures with general cross-section to calculate some important quantities such as the stiffness matrix. Linear solutions, such as the Saint ...
High Coupling Factor Piezoelectric Materials for Bending Actuators: Analytical and Finite Elements Modeling Results
I.A. Ivan, M. Rakotondrabe, and N. Chaillet
FEMTO-ST Institute, University of Franche-Comte, Besançon, France
New giant piezoelectric factor materials such as PMN-PT and PZN-PT were researched during the last decade and are actually becoming commercially available. As they seem very attractive for actuator designs, we studied their potential in replacing PZT ceramics. In a first comparative approach, we tested a series of classic rectangular composite bimorph structures of different combinations of ...
A. Pujol, S. Pommier, G. Debenest, M. Quintard, and D. Chenu
Veolia Environnement, Limay, France
IMFT, Toulouse, France
INSA Toulouse, Toulouse, France
To understand origins and consequences of drying phenomenon during composting, a compositional drying model of a partially water-saturated porous media coupled with biodegradation has been developed. The different simulations carried out under COMSOL Multiphysics demonstrate the ability of the model to well describe the compositional drying of a partial water-saturated porous media and point out ...
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 ...