R. Cunrath, M. Wickert
Fraunhofer EMI, Efringen-Kirchen, Germany
Fraunhofer EMI, Freiburg im Breisgau, Germany
Research at Fraunhofer EMI addresses the response of materials in extreme dynamic loads. Besides mechanical or thermal loads, intense electric pulse currents also represent an extreme dynamic load. Experimentally, metallic samples, mainly thick wires, were electro-mechanically loaded with currents up to 400 kA. For this purpose, a test rig containing a high-voltage pulsed power supply and high ...
3D COMSOL Multiphysics® Model of a Plate Heat Exchanger to Support a Laboratory Teaching Environment - new
N. Medeiros, W. Clark
Worcester Polytechnic Institute, Worcester, MA, USA
Chemical engineering students and practitioners need an understanding of fluid flow and heat transfer inside heat exchangers. Because the flow within plate heat exchangers is difficult to visualize, we developed COMSOL Multiphysics® simulations of plate heat exchangers for students to study alongside a physical heat exchanger in a laboratory setting. Simulative experiments allow students to ...
K. Cluff, H. Mehraein, B. Jayakumar
Department of Bioengineering, Wichita State University, Wichita, KS, USA
Department of Industrial & Manufacturing Engineering, Wichita State University, Wichita, KS, USA
Background: Peripheral arterial disease (PAD) is characterized by atherosclerotic blockages of the arteries supplying the lower extremities, which cause a progressive accumulation of ischemic injury to the skeletal muscles of the lower limbs. Despite revascularization treatment intervention some PAD patients require follow up secondary treatment due to a continued decline in limb function, ...
S. Mishra , S. K. Saxena , P. Yogi , P. R Sagdeo , R. Kumar ,
 Indian Institute of Technology Indore, Indore, Madhya Pradesh, India
In the present work, we have studied the electron transport properties of single silicon nanowire using Semiconductor Module of COMSOLMultiphysics software. We construct a MSM (metal-semiconductor-metal) model where metal is selected as copper and semiconductor is taken as silicon. Silicon is doped with n-type impurity by increasing doping concentration. Further, the Schottky diodes formed at ...
刘佳琪 , 朴胜春 , 唐骏 
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 ...
J. E. Rivera-Salinas , A. Cruz-Ramírez 
 National Polytechnic Institute - ESIQIE, Department of Metallurgy and Materials, Mexico
The physical mechanisms that operate in gas injection are complex, since the bubble formation at submerged orifices involves a wide range of length and time scales, bubble coalescence occurs, rapid pressure variations around the gas bubble produce the wobbling of the bubble, as well as the high velocities involved in the bubble bursting phenomenon on the free surface, among the others. In this ...
Comparison of User vs. COMSOL® Developed Automated Installation Verification of COMSOL Multiphysics® Software
M. W. Crowell ,
 Oak Ridge National Laboratory, Oak Ridge, TN, USA
Verifying that a local software installation performs as the developer intended is a potentially time consuming but necessary step for safety related codes. Automating this process not only saves time, but can increase reliability and scope of verification compared to ‘hand’ comparisons. We now have for comparison both a user-developed tool using LiveLink™ for MATLAB® and an app (in beta) built ...
B. Musil , M. Johlitz ,
 Universität der Bundeswehr München, Institute of Mechanics, Neubiberg, Germany
This work shows the finite element implementation of a constitutive model which can represent the chemo-thermomechanical aging of rubber. This approach considers the nonlinear thermo-viscoelastic behavior of rubber, is formulated for finite deformations in the continuum mechanical framework, takes thermo-oxidative aging effects, which are caused by the diffusion of oxygen into the bulk material, ...
C. K. Kuruba , R. C. Thiagarajan ,
 ATOA Scientific Technologies Pvt Ltd, Bangalore, Karnataka, India.
Ventilation is mainly used to control indoor air quality and for the purpose of thermal comfort by diluting and displacing pollutants. Because of the effects it has on health, comfort, and serviceability, indoor air quality in our homes is becoming of increasing concern to many people. Many countries even push citizens to opt for energy conservation , energy savings buildings based on natural ...
J. P. M. Smeulers , H. P. Pereboom , N. González Díez ,
 TNO, Delft, The Netherlands
Large centrifugal compressors, which are commonly applied in the oil and gas and in the process industry, may fail due to vibrations of the impeller. These vibrations are induced by pressure pulsations in a compressor stage. These vibrations can be especially strong in so-called dense gas compressors due to the strong coupling between gas and structure. Dense gas compressors are for instance ...