Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

空芯光子晶体光纤(HC-PCFs)

刘小璐 [1], 汪滢莹 [1], 田翠萍 [1],
[1] 北京工业大学, 北京,中国

空芯光子晶体光纤(HC-PCFs)具有不同于传统光纤的带隙导光机制,在光通信系统、高功率激光器、工业制造和生物医疗等许多领域有广阔的应用前景。随着光纤拉制技术的不断进步,不同纤芯结构的 HC-PCFs 出现并带来了更好的光传输特性(图1)。通过设计新的纤芯形状,并运用 COMSOL Multiphysics® 中的 RF 模块进行仿真,可以研究各种纤芯 HC-PCFs 的模式(图2)、泄漏损耗(图3)和波导色散(图4)等特性。结果表明:设计的内凹圆化形纤芯 HC-PCFs 比传统的正十二边形纤芯 HC-PCFs 有更低的泄漏损耗和波导色散,而设计的内凹直线形纤芯 HC-PCFs 有很低的泄漏损耗和大的波导色散。新设计的纤芯结构未来可用于大容量光通信 ...

Designing B-field Coils from the Inside-Out

C.B. Crawford[1], Y. Shin[1], and G. Porter[1]
[1]Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky, USA

Traditionally the design cycle for magnetic fields involves guessing at a reasonable conductor / magnetic material configuration, using FEA software to calculate the resulting field, modifying the configuration, and iterating to produce the desired field. Our method involved solving the classical Laplace equation on regions with imposed boundary conditions, which was implemented ...

A Multiphysics Approach to Fundamental Conjugate Drying by Forced Convection

M. de Bonis, and G. Ruocco
DITEC, Universitµa degli studi della Basilicata, Campus Macchia Romana, Potenza, Italy

Heat and mass transfer involved in drying is studied by using COMSOL 3.4. The effect of air temperature on the performance of the drying process applied to fresh food slices is scrutinized. COMSOL’s flexible formulation is exploited by using special drying kinetics for the substrate, and by including a treatment of the dependence of the properties upon the residual moisture content. The model ...

The Effect of Electrochemical Micro-Milling by Rotating Magnetic Field

H-Y. Shen[1], H-P. Tsui[1], J-C .Hung[1], S-Y. Lin[2], and B-H. Yan[2]
[1]Metal Industries Research and Development Centre, Taichung, Taiwan
[2]National Central University, Chungli, Taiwan

In this work, the process of micro-channels in electrochemical micro-milling by using rotating magnet assisted helical tool is presented. The results show helical tool and Lorentz force of the rotating magnetic field that enhance the renewal of the electrolyte and machining efficiency. The feed rate can be raised under the magnetic field assisted in terms of experimental results; moreover, the ...

Effects Of The Microstructure Of Fibrous Media On Their Acoustic Properties

C. Peyrega, and D. Jeulin
Center of Mathematical Morphology, Mines ParisTech, Fontainebleau, France

This study is a part of the Silent Wall ANR project, to which the Center of Mathematical Morphology is associated. Its main objective is to build an acoustical and thermal insulating system for buildings, composed of fibrous materials. The material is composed of two phases: the fibrous network and the air surrounding it. At the microscopic scale the absorption of the acoustic wave is mainly ...

Coupling of Wired PCB With Microwave Radiation – 3D Simulation and Experimental Valuation

T. D. Bui[1], F. Bremerkamp[2], and M. Nowottnick[2]
[1]Department of Automobile Engineering, Thanh Do University, Ha Noi, Vietnam
[2]Institute of Electronic Appliances and Circuits, Department “Reliability and Safety of Electronic Systems”, University of Rostock, Rostock, Germany

Modern electronic assemblies and printed circuit boards (PCB) with their sensitive structures and elements have to be protected against environmental influences by conformal coating or casting compounds. In this case the main challenge is the simultaneous curing of the polymers and the safekeeping of the electronic elements and structures on the PCB. This implies the investigation of the heating ...

An Elastic and Hyperelastic Material Model of Joint Cartilage - Calculation of the Pressure Dependent Modulus of Elasticity by Comparison with Experiments and Simulations

T. Reuter, and M. Hoffmann
fzmb GmbH
Research Centre of Medical Technology and Biotechnology
Bad Langensalza, Germany

In this paper we introduce a elastic and hyperelastic model to describe the biomechanics of joint cartilage. As biomechanical property we calculated the pressure dependent E-modulus E = f(s) to describe the dependence of the biomechanical properties on pressure. The calculation based on the comparison and the iterative approach of the force-way-functions between the experiments and ...

Computational Fluid Dynamics Simulations of an Innovative System of Wind Power Generation

S. Carcangiu, A. Fanni, and A. Montisci
Department of Electric and Electronic Engineering
University of Cagliari
Cagliari, Italy

In this work an innovative wind power generation in urban areas is proposed. The generation system substitutes the roof of the building and it consists of a static part, the stator, and a moving part, called impeller, which is a centripetal turbine with vertical axis of rotation. Since the objective is to conveying the air flow in the stator, the logarithmic spiral has been chosen as the shape ...

Using Simulations to Evaluate the Proper Conditions of the in Vitro Culture of Bone Tissue

A. Kahlig[1], J. Hansmann[1], H. Walles[2], and T. Hirth[1]
[1]University Stuttgart, Institute for Interfacial Engineering, Stuttgart, Germany
[2]Fraunhofer-Institute for Interfacial Engineering and Biotechnology (IGB), Stuttgart, Germany

For the development of bioreactor systems, it is reasonable to develop working simulations, to avoid a lot \"trial-and-error\" experiments. Our research goal is the creation of functioning bone grafts for transplantation. Therefore stem cells get homogenously seeded into porous ceramic scaffolds. To evaluate the needed parameters, like perfusion pressure or the mechanical deformation of the ...

Modeling an electric cell actuator and loudspeaker using COMSOL Multiphysics

W. J. Wu
NTU Nano-Bio MEMS Group
National Taiwan University,
Taiwan

This presentation presented the following: * The building of an FEA model of an electric cell actuator using COMSOL Multiphysics * Validation of this model through the AVID and ESPI measurement systems * The building of an FEA model of an electric loudspeaker using COMSOL Multiphysics * Validation of this model throughan acoustic measurement systems This paper is in Chinese.

3171 - 3180 of 3379 First | < Previous | Next > | Last