湛利华 , 李自强 ,
复合材料帽型加筋结构在航空航天领域得到了广泛应用，硅橡胶芯模是实现其共固化成型的关键工装之一。预浸料固化加热过程中硅橡胶的热膨胀需要通过预制调型孔来消除，以保证帽型加筋结构的成型质量。本文通过 COMSOL Multiphysics® 建立了硅橡胶芯模预制调型孔热力耦合有限元分析模型（图 1），采用传热和结构力学模块对不同结构硅橡胶芯模进行计算机仿真，得出实现复合材料帽型加筋结构形性协同制造的硅橡胶芯模预制调型孔的最佳尺寸范围（图 2）。综合分析硅橡胶芯模受热膨胀的可能影响因素，建立了考虑体积修正系数的预制调型孔计算模型。进一步利用有限元方法回归了芯模预调制型孔体积修正系数，利用回归出的修正系数对不同截面尺寸的帽型结构进行仿真验证，从而确定了较准确地预制调型孔的理论计算模型（图 3）。最后，通过实验验证了该数学模型及有限元分析方法的正确性，为制造复合材料帽型加筋结构提供了理论与实验依据 ...
B. L. Crossley, M. Kossler, P.J. Collins, R. A. Coutu Jr., and L. A. Starman
Air Force Institute of Technology, Wright-Patterson AFB, Ohio, USA
Carbon nanotubes (CNTs) have been proven experimentally to be well suited for field emission applications. An optimized triode configured CNT field emission array is developed using the COMSOL Multiphysics Electrostatics Application to adjust five key physical dimensions to investigate the effects on the enhanced electric field at the CNT emitter tips. The five dimensions studied are CNT ...
Modeling and Design of Material Inkjet Printer Ultraviolet LED Curing Cartridges Using COMSOL Multiphysics® for Printed Electronics Applications
M. Guvench, R. Wiswell
University of Southern Maine, Gorham, ME, USA
COMSOL Multiphysics® coupled with Solidworks® is employed to design, simulate and fabricate cartridges for a materials printer to accomplish in-situ curing of UV curable ink patterns as they are printed on flexible media for printed electronic circuit manufacturing. The cartridges designed house a ultra-violet high-power light-emitting diode (LED) to expose and cure the ink as it is being ...
Understanding the Magnetic Field Penetration in Mesoscopic Superconductors via COMSOL Multiphysics® Software - new
I. G. de Oliveira
Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
Introduction: One of the main characteristic of the superconductors is its diamagnetic response of applied magnetic fields. The superconductors refuse the penetration of magnetic field into its interior, it is the well know Meissner effect, B=0 into the superconductor sample. However when the applied field reach a determined value, the magnetic field can enter. There are two different ways of ...
O. Silva , E. Coene , J. Molinero , B. Shafei 
 Amphos 21 Consulting S.L., Barcelona, Spain
Hydrophobic meshes are a new, promising technique for the recovery of spilled oil in the ocean. They allow to recover and store oil, while filtering it from the surrounding water. They are clean, efficient and can be used in continuously. These meshes have one drawback, however: if they are submerged too deep under the water level, the high pressure will cause presence of water in the recovered ...
M. Ramezani , M. El Barkouky ,
 Melexis, Tessenderlo, Belgium
In this paper, we focused on modeling of the piezoresistive pressure sensors. The Structural Mechanics Module of COMSOL Multiphysics® software is used to model the sensor and make a comparative study of the MEMS pressure sensor with different shape and size of membrane. The impact of membrane shape and size on sensitivity and nonlinearity of the pressure sensor is investigated. For example, it ...
Modeling of Packed Bed Reactors: Hydrogen Production by the Steam Reforming of Methane and Glycerol - new
A. Dixon, B. MacDonald, A. Olm
Department of Chemical Engineering, Worcester Polytechnic Institute, Worcester, MA, USA
The conventional route to hydrogen production is by steam reforming of methane (MSR) in a multitubular packed bed. With the increasing use of biodiesel as a renewable fuel, interest has grown in steam reforming of the excess glycerol produced as a side product (GSR). We use COMSOL Multiphysics® software to model a tubular packed bed reactor, solving a single pellet model at each point. The ...
S. V. Kulkarni, and S. Alapati
 Department of Electrical Engineering, Indian Institute of Technology Bombay, Maharashtra, India
In general, there is a wide range of applications requiring coupled electromagneticstructural analysis. In this paper, two of such coupled problems have been analyzed. The first one is a transient analysis of Electromagnetic Forming process and the other problem is a deformation analysis of a coil in a static electromagnetic field. These problems are simulated in COMSOL using AC/DC module and ...
V. S. Kshirsagar, P. M. Pawar
SVERI's College of Engineering, Pandharpur, Maharashtra, India
Effective suspension and settling are critical for controlling biomass retention in a biogas digester. This paper developed a Computational Fluid Dynamics (CFD) model to simulate the hydrodynamic characteristics of multiphase flow in biogas digester. This is carried out by using COMSOL Multiphysics® software for understanding the behavior of slurries of different viscosity. This study helps to ...
徐佩锋 , 杨宁 ,
在 COMSOL Multiphysics® 中建立了平板膜组件模型，利用自由—多孔介质流和稀物质传递接口，通过对硅颗粒粒径和料液流速等操作参数及相互约束关系的设置，考察对渗透通量、膜表面处浓度等的影响，对硅颗粒悬浮液平板膜过滤中的浓差极化过程和膜组件的工作性能进行全面的仿真分析。并利用 COMSOL 中的函数、参数化扫描等后处理方式，实现了对仿真结果的可视化输出。仿真结果与实验数据较为一致，仿真模型可以作为真实设备的有效补充。