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.

CFD/Electromagnetics Interactions via Realistic Heat and Mass Transfer to Moist Substrates - new

G. Ruocco[1], M. V. De Bonis[2]
[1]Engineering College, University of Basilicata, Potenza, Italy
[2]I​nstitute of Food Science and Production, National Research Council, Bari, I​taly

Localized convection heat and mass transfer can be intensified and optimized by providing exposure to electromagnetic energy. Conjugate heat and mass transfer are configured by solving the momentum, heat and mass transfer simultaneously in both solid (substrate, comprising of a two-phase chemical species) and fluid (auxiliary air) phases. In this way the heat and mass fluxes vary seamlessly ...

Numerical Simulation of Thermal Runaway in a THz GaAs Photoconductor - new

S. Sarodia[1,2], W. Zhang[2], E. Brown[2]
[1]Centerville High School, Dayton, OH, USA
[2]Wright State University, Dayton, OH, USA

Ultrafast terahertz photoconductor devices, especially photomixers, are usually limited in output power by device failure thought to be caused by excessive temperatures. Therefore, understanding of thermal breakdown is essential to the study of device reliability and failure of photoconductors. We performed a series of simulations to determine the electronic and thermal thresholds responsible ...

Numerical Analysis of the Flow Structure in the Continuous Casting Two-strand Tundish

M. Warzecha [1], J. Jowsa [1], A. M. Hutny [1], P. Warzecha [1], T. Merder [2]
[1] Czestochowa University of Technology, Czestochowa, Poland
[2] Silesian University of Technology, Katowice, Poland

Calculations were carried out for the water model of the investigated tundish, represented on a scale 1:3. Numerical calculations enable to estimate the fluid flow velocities, pahtlines and other parameters. Calculations were done for two different grids. Based on the results, the flow structure in the investigated tundish was obtained.

Effect of Antenna Deformation on Performance

J. Persad [1], S. Rocke [1], A. Abdool [1], D. Ringis [1],
[1] Department of Electrical and Computer Engineering, University of the West Indies, St. Augustine, Trinidad and Tobago

Ubiquitous, unobtrusive wearable computing has tremendous potential for impacting many applications including medical, personal entertainment and surveillance. Advances in the underlying technology have allowed for consistent reduction in the size and weight of emerging solutions, with increasing subsystem integration. A key component for the realisation of these systems is the short and long ...

Evaluation of Binary Mixture Models for 3D Printed Biosensors

J. Persad [1], S. Rocke [1], D. Ringis [1], A. Abdool [1],
[1] Department of Electrical and Computer Engineering, University of the West Indies, St. Augustine, Trinidad and Tobago

3D printing as applied to the area of electronics manufacture covers a broad range of traditional printing technologies [1]. The attraction in 3D printing lies in its potential to disrupt the traditional photolithographic/subtractive manufacturing line with simpler additive processes. Additive electronics manufacturing which utilises 3D printing techniques allow for fewer production steps and ...

浅海声场建模预报

刘佳琪 [1], 朴胜春 [2], 唐骏 [2]
[1] 哈尔滨工程大学,哈尔滨,黑龙江,中国
[2] 挪威科技大学,特隆赫姆,挪威

海洋覆盖了地球表面百分之七十以上的面积,其中蕴藏着丰富的生物矿产资源,日益受到世界各国的重视。声波作为海水中传输信号的唯一载体,在浅海波导中的传播受海底和海面影响很大,当声波在浅海波导中发生折射反射和散射时,如何预报复杂海底边界条件下浅海中的传播特性对海洋开发有重要意义。针对含有声速剖面的沉积层海底、楔形海底及实际弹性海底,利用有限元理论,对二维浅海声场的传播损失进行数值模拟。应用 COMSOL Multiphysics® 软件的声压接口和声结构耦合接口,把地形数据导入软件模拟真实海底的地形。把浅海波导简化成分层矩形,信号源以点声源的形式向外发射单频信号,在模型定义处添加完美匹配层模拟无限远距离处声压场情况;对于含有声速剖面情况的波导问题,在 COMSOL 中可以较为便捷地以添加内插函数的形式进行仿真,与其他声场建模软件形成对比,突显有限理论元理论计算浅海传播损失的优势 ...

Optimization of Drying Step to Obtain Large, Transparent Magnesium-Aluminate Spinel Ceramics

J. Petit [1], L. Lallemant [1],
[1] ONERA, Chatillon, France

To obtain large transparent ceramic samples, we optimized the drying step process using COMSOL Multiphysics®. Indeed, green body's drying in a climate chamber is the critical step when large size and complex shape samples are needed. Then we obtained 75 mm diameter and 10 mm thickness highly transparent spinel ceramics.

Kinetics of Proteins in the Blood-Brain Barrier

K. Gandhi [1],
[1] University of California, Riverside, CA, USA

The delivery of chemotherapy for cancer into the central nervous system, in particular the brain, remains a challenge. This results in brain metastases commonly being a cause of death from cancer. Here, we look at the environment of the blood-brain barrier. Then, we explore two proteins (breast cancer resistance protein and p-glycoprotein) that may inhibit the transport of medications (erlotinib ...

Simulation of Electrodynamic Planar Loudspeaker (EDPL) with COMSOL Multiphysics® Software

M. Asgarisabet [1,2], R. Czapla [2], J. Krueger [2], B. Sterling [2],
[1] Michigan Technological University, Houghton, MI, USA
[2] HARMAN International, Detroit, MI, USA

A simulation of an electrodynamic planar loudspeaker (EDPL) has been developed in this study with the COMSOL Multiphysics® software. Using the simulated model, effect of different parts has been studied to improve the performance. The locations of the coil and magnets have been obtained using the magnetic flux density. Then, the sound pressure level and directivity index have been obtained.

Oxygen Based Diffusion Modeling of Oxidation Behaviour of Encapsulated Lipids

H. Teichmann [1], A. Linke [1], R. Kohlus [1],
[1] Process Engineering and Food Powders, University of Hohenheim, Stuttgart, BW, Germany

Encapsulation is an established technique to protect sensitive materials from environmental factors such as oxygen and light. Nutritionally beneficial fatty acids like omega 3 fatty acids are susceptible to oxidation and are therefore encapsulated by drying an oil in water emulsion. It is assumed that the wall matrix, that is surrounding the lipid droplets, acts as an oxygen diffusion barrier. ...