Computational Multiphysics to Optimize Humidification Chamber for a Novel PEM Fuel Cell Power System Used in Automobile Application - new
Tata Motors, Bengaluru, Karnataka, India
Proton Exchange Membrane (PEM) fuel cells are quickly becoming an attractive technology due to their ability to meet increasing energy demands in a cleaner, more efficient way compared to existing methods. A fuel cell is an electrochemical device which converts the chemical energy of a fuel and an oxidant directly into electricity without the intermediate step of classical, chemical combustion ...
J. Persad , S. Rocke , A. Abdool , D. Ringis ,
 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 ...
I. Neitzel , R. Kreczkiuski ,
 FATEB, Telemaco Borba, Paraná, Brasil
A obtenção de polpa celulósica antecede a produção de papel e envolve a separação das fibras da madeira mediante a utilização de energia mecânica, térmica, química ou a combinação desses processos. Esta operação é realizada em um reator, tubular, cilíndrico e vertical (tipicamente 6 m de diâmetro e 50 m de altura), denominado genericamente de digestor. A madeira é alimentada pelo topo na forma ...
宋春芳 , 王燕 , 金光远 , 崔政伟 ,
方便餐盒微波加热特性研究 宋春芳※ 王燕 金光远 崔政伟 (江苏省食品先进制造装备技术重点实验室，江南大学机械工程学院，江苏，无锡，214122） 摘要：本文采用 COMSOL Multiphysics® 建立了电磁与传热耦合的仿真模型，研究方便餐盒微波加热传热特性规律，模型包括加热腔、波导以及可旋转的转盘和物料，通过比较不同转速对仿真结果的影响，选用 7.5rpm 作为转盘转速。研究结果表明，微波功率为 700W，90s 的微波加热后，方便餐盒空间温度场分布和瞬态温度曲线与实验结果基本保持一致，微波仿真模型可行，研究结果为方便餐盒的微波快速加热及工业化生产与加工提供一定的理论依据。 关键词：微波；仿真；转盘；传热 ...
Multiphysics Simulation of Ion Concentration Polarization Induced by Nanoporous Membranes in Dual Channel Devices
M. Jia, M. Kim, T. Kim 
 Ulsan National Institute of Science and Technology, Ulsan, Korea
ICP phenomenon has been widely used for fabricating microfluidic devices of pre-concentration, micromixing and desalination. However, theoretical research and simulation of ICP have not been carefully dealt with. We provide a multiphysics simulation of a DC-ICP device based on improved numerical settings in this work.
R. Winz, N. Schröder, W. Wiechert, and E. von Lieres
Institute of Biotechnology 2, Research Centre Jülich, Jülich, Germany
Research Center for Micro and Nanochemistry, University of Siegen, Siegen, Germany
In recent years lab-on-microchip technology has become a powerful tool for micro-scale analysis of biochemical processes. In the studied system the overall process consists of transport, convection, diffusion, reaction and adsorption processes. Two compounds A and B, contained in a carrier fluid (buffer), are introduced into a reaction channel via a Y-shaped double-inlet. As the streams flow ...
G. Hulkó, C. Belavý, P. Bucek, K. Ondrejkovic, and P. Zajícek
Institute of Automation, Measurement and Applied Informatics of Slovak University of Technology, Bratislava, Slovak Republic
In systems and control theory dynamical systems described by partial differential equations are known as distributed parameter systems. So for modeling and dynamical analysis of distributed parameter systems wide possibilities are offered by COMSOL Multiphysics® based on numerical solution of sets of partial differential equations by finite element method. Paper presents actual possibilities ...
G. Campa and S.M. Camporeale
DIMEG, Politecnico di Bari, Bari, Italy
Modern gas turbines suffer of the phenomenon of combustion instability, also known as “humming”. The main origin of the instability is considered to be related to the interaction between acoustic waves and fluctuations of the heat released by the flame. This paper presents a novel numerical method in which the governing equations of the acoustic waves are coupled with a flame heat ...
F. Bircher and P. Marmet
Institute of Print Technology, Bern University of Applied Sciences, Burgdorf, Switzerland
Electromagnetic micro valves are currently developed empirically or the different physics are treated separately. To accelerate the development-process and for a better understanding of the overall system, a multiphysics simulation is built up. This simulation considers the electromagnetics, the electronics (including the control of the process), the mechanics and the fluidics with respect to ...
COMSOL Grab Bag: How to Use a Versatile CFD Code to Model Interesting Problems from Cryogenic Storage to Biofuel Production
Senior Research Engineer,
NASA Glenn Research Center, Cleveland, OH, USA
Emily Nelson received her PhD in Mechanical Engineering from the University of California at Berkeley. She is a senior research engineer at NASA Glenn Research Center and specializes in the formulation and solution of problems in microgravity science, multiphase flow, porous media, risk analysis, and gravitational biology. This leads her to fundamental and applied approaches on a range of issues ...