Y. K. Hwa 
 National University of Singapore, Singapore
The present work investigates the role of suspended liquid-gas interfaces for applications involving the reduction in flow resistance using the COMSOL multiphysics software. A pressure-driven viscous flow of a liquid through microtubes containing superhydrophobic surfaces patterned with alternating micro-grooves and ribs has been considered. Employing a 3D simulation, a fully-developed laminar ...
Effect Of Heat And Mechanical Properties On Thermal Vias Of PCB Mounted With LED Driven Of QFN Package
N. Supian 
 Universiti Sains Malaysia, Malaysia
The semiconductor and IC package manufacturer are continuously seeking for miniaturization devices to fix into a small space. An unfortunate miniaturization of devices will have an effect on heat dissipation density, which leads to low rate of heat dissipation to the ambient. As a result, the chip temperature increases which eventually degrade the entire system of the circuit. Therefore, in this ...
D. M. Forrester ,
 Loughborough University, Loughborough, United Kingdom
When the particles in a colloid come close to each other, multiple scattering in ultrasonic beams is no longer negligible and crowded particle effects emerge. The presence of each particle affects the scattering of all others, leading to coupling effects. We investigate the interaction of a range of sizes of particles, arranged periodically or randomly (in medium to high ultrasonic frequency ...
张博文 , 曹光 , 唐晓 
硫化氢是天然气中的有害成分，它的存在一方面降低了天然气中烃类气体的百分比例，使然气的工业价值降低，同时它极强的毒性和腐蚀性，威胁着钻探开发的每一个环节，常导致重大的安全事故。由于我国海上油气田资源丰富，急需一套完整的工艺及装备系统处理深、远海储藏天然气中的硫化氢，由于恶劣的海洋环境影响，需要优选出适应 FLNG 条件下的脱硫工艺、设计并优化 FLNG 脱硫反应器内部结构。经过研究，我们将络合铁脱硫工艺应用在自主研发的 FLNG 脱硫装置中。利用 COMSOL Multiphysics® 多物理场仿真软件的化学反应工程模块和反应流接口对自主研发的脱硫装置中的络合铁脱硫工艺过程进行仿真，通过建立图1中二维的脱硫装置图形，模拟了脱硫工艺中主要反应物及反应产物浓度随时间分布情况，图2、图3、图4分别为二价铁离子浓度、三价铁离子浓度及硫磺随时间变化在反应装置中分布情况，同时也对流体流动进行仿真 ...
S. Musa and M. Sadiku
College of Engineering, Prairie View A&M University, Prairie View, TX, USA
Due to the complexity of electromagnetic modeling, researchers and scientists always look for development of accurate and fast methods to extract the parameters of electronic interconnects and package structures. In this paper, we illustrate modeling of multiconductor interconnects in multilayered dielectric media using COMSOL Multiphysics and the finite element method. We specifically ...
M. Herring Jensen
Widex A/S, Vaerloese, Denmark
In this study we model the sound attenuation properties of a hearing aid earmold tube. The model includes thermoviscous acoustic effects and it couples structural vibrations to the external acoustic field. Moreover, the finite element domain is coupled at two boundaries with an electroacoustic model of a hearing aid and an acoustic 2-cc coupler.
Effect of Antennae Polarization Relative to Tunnel Orientation on Electromagnetic Wave Scattering due to Underground Tunnels
A. Farid, and T. Raza
Civil Engineering, Boise State University, Boise, Idaho, USA
Illegal immigrants and smugglers frequently use underground tunnels to avoid border security and checkpoints. In addition, the threat of international terrorism has recently made the effort to detect tunnels a national security priority. No single technology and sensing modality is capable of detecting tunnels in all heterogeneous soils environments. The goal of this research is to study and ...
R. Dufour , C. Wu, F. Bendriaa, V. Thomy, and V. Senez
BioMEMS Group, IEMN, University of Lille Nord de France, Villeneuve d’Ascq, France
This paper presents an Analog to Digital Microfluidic Converter (ADMC) using passive valves and enabling the conversion of a continuous liquid flow into droplets for Electro-Wetting On Dielectric (EWOD) actuation. Valves calibration, geometry characteristics and losses reduction have been optimized using microfluidic application mode of COMSOL Multiphysics®.
V. Romero-García, A. Krynkin, J.V. Sánchez-Pérez, S. Castiñeira-Ibáñez, and L.M. Garcia-Raffi
Centro de Tecnologías Físicas Acústica, Universidad Politécnica de Valencia, Valencia, Spain
School of Computing, Science & Engineering, University of Salford, Salford, United Kingdom
Depto. Física Aplicada, Universidad Politécnica de Valencia, Valencia, Spain
Instituto Universitario de Matemática Pura y Aplicada, Universidad Politécnica de Valencia, Valencia, Spain
The elastic and geometrical properties of Low Density Polyethylene (LDPE) foam are used in this paper to improve the attenuation properties of periodic arrangements of acoustic scatterers known as Sonic Crystals (SCs). A specific recycled profile of LDPE foam is used as elastic-acoustic scatterer. The acoustic spectrum of the single scatterer shows two attenuation peaks in the low frequency ...
J. Rodríguez-González, A.M. Negredo, P. Petricca, and E. Carminati
Departamento de Geofísica y Meteorología, Facultad de CC. Físicas, Universidad Complutense de Madrid, Madrid, Spain
Dipartimento di Scienze della Terra, Università di Roma La Sapienza, Roma, Italy
Istituto Geologia Ambientale e Geoingegneria – CNR, Roma, Italy
Subduction processes have great importance as are related to volcanism and earthquake occurrence. Old and cold plates should subduct steeper than younger ones, but the subduction angle is highly variable and does not always correlate with the age of the plates. Some researchers propose a global or net westward drift of the lithosphere relative to the mantle and this assessment is still a matter ...