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.

Multiphase, Dual Polymer Injection Molding and Cooling of an Open Cavity to Form both Distinct and Graduated Material Properties within a Complex Three-Dimensional Body

M.S. Yeoman[1]
[1]Continuum Blue Ltd, Forest Row, United Kingdom

With the advancement of medical devices and implants, many now require more advanced nonlinear, hyper-elastic materials such as elastomers to be extensively utilized in the body. This combined with the need to allow for considerably different, varying and graduated material responses within the three-dimensional device, poses a difficult challenge to manufacturing an elastomeric implant in a ...

Simulation of Spiral-Tube Heat Exchangers in COMSOL Multiphysics® Software

K. O. Lund [1], S. M. Lord [2],
[1] Kurt Lund Consulting (COMSOL Certified Consultant), Del Mar, CA, USA
[2] SML Associates, Encinitas, CA, USA

A frequently occurring geometry for heat exchangers is that of a long tube wound into a helix or spiral around a core volume. There is to be heat exchange between the tube and the gases (or solids) in the core. However, the length scales of these two parts of the geometry are very different, thus complicating the interface between the tube and the core processes. Usually, the tube is too ...

Numerical Design of a Test Plant for Dynamic Analysis of High Temperature Thermoelectric Generators

M. Rohne [1], A. Schlott [1], V. Pacheco [1], J. Meinert [1],
[1] Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM, Branch Lab Dresden, Dresden, Germany

Thermoelectric generators (TEG) use Seebeck’s effect to directly convert heat into electricity. TEG represent, therefore, a promising option for energy harvesting of waste heat, for example in car exhaust systems. To investigate the dynamic behavior of high temperature TEG, a test facility was numerically designed and finally constructed. Transient thermal simulations were performed in order to ...


于雨田 [1],
[1] 四川大学应用电磁所,成都,中国

本作品通过研究微波炉矩形金属璧的单向移动,实现腔体内电场分布的变化,从而达到调节作用腔体内各点的电场分布的目的。图表1为仿真几何模型示意图,除了腔体内部的小块土豆,其余的腔体材料均为理想导体铜,腔体内为标准大气压下的空气。图表1中300mm*30mm*350mm矩形块的设计是为了更便捷地计算移动后的网格。本次仿真沿x轴正方向向外移动2的外侧面金属壁来实现腔体的移动。端口激励源为TE10模、频率2.45GHz、功率700W、相位为0的微波。图表2为金属壁移动示意图,通过软件的移动网格接口实现移动金属壁的仿真。仿真结果良好,图表3和图表4显示了移动后的输入端口S11值以及土豆加热效果,金属壁移动40mm后,加热物体的加热均匀性提高了14.33%,加热效率提高了38.53%,说明合理地移动微波腔体金属壁可以有效地提高模型的加热均匀性和加热效率。研究结果对工业和科研有着较好的参考意义 ...

Natural Convection Effects on the Solidification in Cylinders at Different Filling Percentages

R. Bourisli [1], A. Alshayji [1],
[1] Kuwait University, Kuwait City, Kuwait

The solidification of a fluid in a partially-filled circular cylinder is encountered in a number of industrial processes and in the oil and gas sector. The characteristics of the process depends on various fluid and geometrical parameters. In the current study, a fluid with temperature-dependent density in a partially-filled circular cylinder solidifies because of a sudden drop in pipe surface ...

Virtual Modeling of Thermo-Physiological Comfort in Clothing

P. Van Ransbeeck [1], R. Benoot [1], B. Van Der Smissen [1]
[1] University College Ghent, Faculty of Science and Nature, Department of Mechatronics, Belgium

This publication aims to investigate conjugate heat and mass transfer around a clothed virtual manikin. This research can be performed at different scales: (1) at material scale where a piece of textile is investigated in 1D or 2D space or (2) at system level where a clothed cylindrical body (2D) or a complete manikin (3D) is modeled. The work is based on previous methods and results from ...

Thermal Modeling of Lithium-ion Pouch-type Cell for Better Cycle Life and Safety Application

J. B. Sangiri [1], S. Ghosh [1], C. Chakraborty[1]
[1] Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India

Lithium-ion batteries are most preferable energy storage devices for its higher energy density, flexible form factor and lightweight design than comparable battery technologies. The present simulation work is focused on incorporating contact thermal resistance within a two-dimensional thermal model of Lithium-ion pouch cells. In the present study COMSOL Multiphysics® software has been used to ...

Multiphysics Process Simulation of Static Magnetic Fields in High Power Laser Beam Welding of Aluminum

M. Bachmann[1], V. Avilov[1], A. Gumenyuk[1], M. Rethmeier[1]
[1]BAM Federal Institute for Materials Research and Testing, Berlin, Germany

The article deals with the application of the Hartmann effect in high power laser beam welding of aluminum. The movement of liquid metal in a magnetic field causes electric currents which build a Lorentz force that decelerates the original flow. The numerical model calculates the influence of a steady magnetic field on partial penetration keyhole laser beam welding of aluminum. Three-dimensional ...

Numerical Analysis of the Self-Heating Behaviour of Coal Dust Accumulations - new

D.Wu[1], E. Van den Bulck[1]
[1]Katholieke Universiteit Leuven, Department of Mechanical Engineering, KU Leuven, Belgium

Introduction Self-heating behaviour of dust accumulations is a multiphysics field coupled heat and mass transfer in the porous media. A typical experimental apparatus with a hot storage oven and mesh wire baskets has been taken as the study object. The influence of gas flow velocity, oxygen concentration and ambient temperature on the self-heating behaviour of the dry coal dust sample has been ...

Simulation of a Dynamic Scraped Surface Heat Exchanger for Non-Newtonian Fluids

S. Birla [1],
[1] ConAgra Foods, Omaha, NE, USA

Scraped surface heat exchangers (SSHEs) are commonly used in the food, chemical, and pharmaceutical industries for heat transfer, crystallization, and other continuous processes. One of the factor posing difficulties to heat transfer is viscosity. Highly viscous fluids tend to generate deep laminar flow, a condition with very poor heat transfer rates and high pressure losses involving a ...