科技论文和展示

这里您可以找到在全球 COMSOL 年会上所有用户报告的演示文稿。这些演示文稿介绍 COMSOL 用户是如何使用 COMSOL Multiphysics 进行创新性研究和产品设计。研究主题涵盖了包括电气、机械、流体和化工等范围广泛的行业和应用领域。请使用“快速搜索”来查找与您的研究领域相关的演示文稿。

Simulations of MEMS Based Piezoresistive Accelerometer Designs in COMSOL

N. Bhalla[1], S. Li[2], and D. Chung[1]
[1]Chung Yuan Christian University, Taiwan, (R.O.C)
[2]National Tsing Hua University, Taiwan, (R.O.C)

Different configurations of MEMS based accelerometer has been made and analysed using COMSOL Multiphysics. The designs presented in this paper consist of a square shaped proof mass with flexures supporting it. Different position and varied number of supporting flexures attached to the proof mass makes each configuration distinct. The piezoresistors are placed near the proof mass and frame ends on ...

Simulation of PTFE Billet Sintering using COMSOL

A. Roday, and P. Nicosia
Garlock Sealing Technologies
Palmyra, NY

Sintering is an important step in the manufacturing of polytetrafluoroethylene (PTFE) billets. The challenge in heating large billets stems from the inherent low thermal conductivity of PTFE. Existing literature suggests determining maximum heating rate experimentally using recommended guidelines. This paper uses COMSOL to aid in optimizing the temperature profile required for a particular ...

Analyzing Drug Delivery and Osteoblast Growth on a Porous Scaffold in a Perfusion Bioreactor

A. Sun, and S. Murray
Dept. of Biomedical Engineering
UCLA, Los Angeles, CA

Implantable Collagen sponges are used in Spinal Surgery as Drug Delivery Scaffolds. An optimal concentration of growth factor that strikes a balance between bone growth and adverse diffusion effects is difficult to find. The porous sponge also serves as a scaffold for Osteoblast growth, and fluid shear has been shown to mediate biological effects on that cell type. We use COMSOL Multiphysics ...

Optimization of Design Parameters of a Novel MEMS Strain Sensor used for Structural Health Monitoring of Highway Bridges

H. Saboonchi, and D. Ozevin
Civil Engineering Department
University of Illinois at Chicago
Chicago, IL

The novel Micro Electro Mechanical System (MEMS) based Piezoresistive stain sensor is presented in this paper. The main goal of this sensor is to monitor the localized strain in the highway bridges especially near the crack tips. Monitoring the crack growth on the bridges can lead to early detection and prevention of bridge failures. The COMSOL Multiphysics software was used to optimize the ...

Modeling of Tumor Location Effect in Breast Microwave Imaging using COMSOL

E. Khosrowshahli[1], and A. Jeremic[2]
[1]School of Biomedical Engineering, McMaster University, Hamilton, ON, Canada
[2]McMaster University, Dept. of Electrical and Computer Engineering, McMaster University,
Hamilton, ON, Canada

Microwave imaging has been recently proposed as a potentially useful screening technique for breast cancer. This method detects abnormalities in the tissue based on permittivity difference between breast normal and malignant tissue. In this method breast is illuminated by high frequency electromagnetic wave, and received waves are then analyzed in order to construct a map of breast\'s ...

Simulation of an Atmospheric Pressure Direct Current Microplasma Discharge in He/N2

L. Tong
Keisoku Engineering System Co. Ltd.
Tokyo
Japan

A study of an atmospheric pressure direct current microplasma discharge in He/N2 is performed using COMSOL Multiphysics. The calculation of heat transfer is fully coupled with the plasma simulation so as to resolve the gas heating in discharges. A simple circuit model is used to decide the discharge voltage so that the current-voltage (I-V) characteristics are obtained. The I-V characteristics ...

COMSOL-Based Nuclear Reactor Kinetics Studies at the HFIR

D. Chandler[1], J. Freels[2], R. Primm III[3], and G. Maldonado[1]
[1]Department of Nuclear Engineering, University of Tennessee, Knoxville, TN
[2]Research Reactors Division, Oak Ridge National Laboratory, Oak Ridge, TN
[3]Primm Consulting, LLC., Knoxville, TN

The computational ability to accurately predict the dynamic behavior of a nuclear reactor core in response to reactivity-induced perturbations is an important subject in reactor physics. Space-time and point kinetics methodologies were developed for the purpose of studying the transient-induced behavior of the High Flux Isotope Reactor’s (HFIR) compact core. The space-time simulations employed ...

A 2D Axisymmetric Electrodeposition Model

R. Pryor
Pryor Knowledge Systems, Inc.
Bloomfield Hills, MI

Electroplating is a vital technology widely employed for many technological applications ranging from decorative or anti-corrosion coatings to high precision nanotechnology passive electromagnetic cloaking devices. This 2D Axisymmetric Electroplating Model demonstrates one of the modeling methodologies that can be used to calculate the transient generation of a coating thickness of a deposited ...

Modelling Aircraft Fuel Gauging Unit using COMSOL Multiphysics Software

T. Ekwevugbe[1], and G. Bevan[2]
[1]Institute of Energy and Sustainable Development, De Montfort University, Leicester, United Kingdom
[2]School of Engineering and Computing, Glasgow Caledonian University, Glasgow, Scotland

An investigation was undertaken into the suitability of using COMSOL for modeling an aircraft capacitive fuel gauging unit. A model of a sensor immersed in a fluid was developed for rectangular tank geometry with a range of fluid levels and sensor orientation using the electrostatics application mode in COMSOL’s AC/DC module The importance of modeling the capacitance of air was demonstrated. ...

Calculating and Observing Opto-Mechanically Induced Surface Acoustic Waves in a Silica Whispering Gallery Microresonator

J. Zehnpfennig
Photonics Research Center
United States Military Academy
West Point, NY

Here we calculate opto-mechanically induced Surface Acoustic Waves upon a silica microresonator using COMSOL. Using conservation of momentum, we show both analytically and numerically that the photonphonon interaction within the resonator cavity causes a moving train of electrodes - a virtual grating of matter density – that displace material in different directions and magnitudes. This ...

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