T. Wagner, and U. Peil
International Graduate School of Risk Management of Natural and Civilization Hazards on Buildings and Infrastructure, Braunschweig, Germany
Institute of Steel Structures, Technical University Braunschweig, Braunschweig, Germany
Hazardous for the transmission lines is not only the static ice load, but also the aerodynamic instability of iced cables. It can lead to large amplitude oscillations at low frequencies. Also, twisting due to asymmetrical iced cables may increase the fatigue rate. In extreme events, atmospheric icing can cause severe damage on towers and power lines, resulting in extensive electricity ...
Two-dimensional Analysis of Triple Coupled Physics of Structural Mechanics, Diffusion and Heat Transfer in a Gas Pipe
P. Lee-Sullivan, and M. Haghighi-Yazdi
Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario, Canada
In this study, a 2-D model has been built using COMSOL Multiphysics® to analyze a triple coupled physics problem involving simultaneous gas diffusion, heat transfer, and structural mechanics in a pipe due to the flow of high-pressure carbon dioxide. The problem geometry and boundary conditions were based on the analysis by Rambert et al. who have published the most advanced modeling work in ...
M. Qin, and H. Bau
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Pennsylvania, USA
The paper presents and compares two models for simulating magneto-hydrodynamic flow of RedOx electrolyte in a conduit patterned with circular pillars. The first model solves the coupled Nernst-Planck and Navier-Stokes equations subjected to Butler-Volmer electrode kinetics and provides detailed information on ions’ concentrations. The second model treats the electrolyte as a conductor, and ...
K. Song, and H. Knickle
Department of Chemical Engineering, University of Rhode Island, Kingston Rhode Island, USA
In this paper we present a study of the time dependent analysis of a metal hydride bed (MHB) which provides constant flow to a fuel cell at required power loading and pressure. The hydrogen gas phase pressure, the hydrogen concentration in the metal hydride and the hydrogen desorption rate are consider as key variables in this study. Both the space scale and time scale analysis are performed. ...
3M Canada Company, London, Ontario, Canada
The collection efficiency of aerosol particles on a ribbon in a turbulent flow is analyzed using COMSOL Multiphysics. The flow field is solved using Chemical Engineering module and particle tracing plots are obtained using equations of motion including Khan and Richardson drag force. A MATLAB script is used to count the captured particles on the ribbon and determine the capture efficiency with ...
Department of Mechanical Engineering, College of Engineering and Petroleum, Kuwait University, Safat, Kuwait
In this study, numerical simulations of mixing in turbulent flow, subject to a change in density, are performed. Attention is focused on the binary mixing between two streams of fluid in which a variable density step are formed due to a difference in the temperature. This binary mixing problem performed by assuming low Mach number flow. The results demonstrate the variable density effects and ...
Chinese Academy of Sciences, Dalian Institute of Chemical Physics, Beijing, China
We studied the transient characteristics of PEMFC and water transport during PEMFC start-up, concerning the following aspects: Effect of air stoichiometry change on transient behavior of PEMFC, Transient behavior of water transport during PEMFC start-up, and high temperature PEMFC modeling.
China Electronics Technology Group Corporation, China
With this presentation, some content has been discussed from several parts as follows: 1. Plasma switches are introduced by their derivation and types, and the operating mechanism of Hydrogen cross field plasma switch is indicated then. 2. The related theories of Hydrogen plasma to simulate a DC discharge have been discussed. 3. Hydrogen simulation model is established from two aspects: A: Fixed ...
Chinese Academy of Sciences, Institute of Electrical Engineering, Beijing, China
Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently introduced method for imaging electrical impedance properties, which integrates classic electrical impedance tomography and ultrasonic technique. It could provide an explicitly reconstructed electrical impedance distribution with high spatial resolution and contrast, eliminating the shielding effects of insulating tissues. ...
N.N. Sharma, and A. Tekawade
Mechanical Engineering Group, Birla Institute of Technology & Science, Pilani, Rajasthan, India
A simple design for a microfluidic flow system for use in mixing or reacting assays with limited sample availability has been proposed and analyzed using COMSOL\'s multiphysics simulation package. The design is based on differential electroosmotic flow concept which has facilitated a number of interesting flow phenomena in micro-domains. For an average potential drop of about 86 kV/m in the ...