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.
COMSOL-News-Magazine-2017
COMSOL-News-Magazine-2017-Special-edition-acoustics
COMSOL News Magazine 2017

复合材料帽型结构件制造的硅橡胶芯模预制调型孔仿真分析

湛利华 [1], 李自强 [1],
[1] 中南大学机电工程学院,长沙,中国

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 ...

Understanding the Magnetic Field Penetration in Mesoscopic Superconductors via COMSOL Multiphysics® Software - new

I. G. de Oliveira[1]
[1]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 ...

Numerical Simulation of the Lithium-Ion Battery Cell Discharge Characteristics - new

Z. Umar[1], D. Ledwoch[1], L. Komsiyska[1], S. Vasić[[1]
[1]EWE-Forschungszentrum für Energietechnologie e. V, Oldenburg, Germany

In general battery cells are charged/discharged using constant current or constant power expressed as C-Rates and P-Rates respectively. We are developing a single cell-level Li-Ion battery model in order to simulate the performance and the physicochemical phenomena under power discharging mode (P-Rate). The P-Rate is defined as the measure of the rate at which a battery charges/discharges ...

A Comparison of Discrete Fracture Models for Single Phase Flow in Porous Media Using COMSOL Multiphysics® Software

C. A. Romano-Pérez [1], M. A. Díaz-Viera [2],
[1] Facultad de Ingeniería, Universidad Nacional Autónoma de México, Coyoacán, DF, México
[2] Ingeniería de Recuperación Adicional, Instituto Mexicano del Petróleo, Gustavo A. Madero, DF, México

A comparison of discrete fracture and explicit fracture models for single-phase flow in fractured porous media using COMSOL Multiphysics® software is presented to understand the contribution of each individual fracture to fluid flow, and the exchange between fracture and surrounding medium at a scale such that the fractures could be modeled explicitly. The derived flow models are based on the ...

Modeling and Design of Material Inkjet Printer Ultraviolet LED Curing Cartridges Using COMSOL Multiphysics® for Printed Electronics Applications

M. Guvench[1], R. Wiswell[1]
[1]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 ...

Effect of Viscosity of Food on Digestion and Nutrient Absorption in the Human Small Intestine

J. S. Karthikeyan [1], D. Salvi [1], M. V. Karwe [1],
[1] Rutgers University, New Brunswick, NJ, USA

Digestion is the process of breaking down food into smaller components, by mechanical and enzymatic action in the digestive tract, so that the smaller nutrient molecules can be more easily absorbed in the intestinal tract. To study and analyze the human digestive process, different methodologies have been used in the past. In general, in vivo feeding studies with humans provide the most accurate ...

Hydro-Mechanical Modelling of a Shaft Seal in a Deep Geological Repository

D. Priyanto
Atomic Energy of Canada Limited, Pinawa, MB, Canada

The hydro-mechanical (HM) numerical simulation of a shaft seal installed at a fracture zone in a hypothetical host rock using COMSOL is presented. Two different stages are considered in the numerical modelling. Stage 1 simulates the groundwater flow into an open shaft. Stage 2 simulates the groundwater flow after installation of shaft sealing-components. The shaft sealing components include: ...

Model and App of Hydrophobic Meshes Used in Oil Spill Recovery

O. Silva [1], E. Coene [1], J. Molinero [1], B. Shafei [1]
[1] 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 ...

Computational Fluid Dynamics (CFD) Simulation of Multiphase Flow in Biogas Digester

V. S. Kshirsagar[1], P. M. Pawar[1]
[1]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 ...

平板膜浓差极化过程的有限元仿真分析

徐佩锋 [1][2], 杨宁 [1],
[1] 江苏大学,镇江,江苏,中国
[2] 江苏农林职业技术学院,句容,江苏,中国

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。