K. Alhazza, B. Albusairi, H. Kamal, H.M.S. Lababiedi, A.A. Abbas
Kuwait University, Kuwait City, Kuwait
Petrochemical Industries Company, Kuwait City, Kuwait
COMSOL Multiphysics has been used to validate and check the design of a header transporting ammonia gases released from pressure safety valves (PSVs) to the tip of the flare. The header is part of a dedicated flaring system to contain emissions from ammonia storage tanks. The two main challenges are the low relief pressure and high capacity of the system. Another difficulty is the high relief ...
S. Kesari, A. Pandit, K. Mishra, Kaushal B. K.
Electronics and Communication Engineering, Nitte Meenakshi Institute of Technology, Bangalore, India
The MEMS microphone is also called microphone chip or silicon microphone.The pressure sensitive diaphragm is etched directly into a silicon chip by MEMS techniques and is usually accompanied with integrated preamplifier. Most MEMS microphones are variants of the condenser microphone design. The device consists of a polysilicon diaphragm suspended over a single crystal silicon backplate ...
Renewable Energy RD Center, Chung-Hsin Electric & Machinery, Taiwan
Proton exchange membrane fuel cells (PEMFCs) were investigated using COMSOL Multiphysics with the AC/DC Module and Chemical Engineering Module. Simulation may be used to increase the performance while decreasing the cost of the catalyst later (CL). Experimental validation of single and multi-layer CL was performed for varied PBI electrolyte content. The validated model was used to investigate ...
Ritsumeikan University, Kusatsu City, Shiga, Japan
There are two types of vertical axis wind turbine, drag-type and lift-type. Drag type wind turbine can rotate in low speed wind condition, although its rotation speed is low. Lift type wind turbine can rotate at higher speed, although it works only in high speed wind condition. This study investigates new blade profile that realize rotation in low wind speed condition and higher rotation speed ...
P. Pianko-Oprych, E. Kasilova, Z. Jaworski
West Pomeranian University of Technology, Faculty of Chemical Technology and Engineering, Szczecin, Poland
Micro-tubular Solid Oxide Fuel Cells (mSOFC) are attracting more and more interest as new generation of energy conversion devices. Although commercial applications still suffer from high costs, there is a need for further improvement of the cell performance, durability and start-up. To resolve those challenges, knowledge of the distributions of species concentration, temperature and current ...
M. Freda, A. Giannetti, L. Lattanzi, S. Luperi
Centro Sviluppo Materiali, Rome, Italy
The electrochemical pickling of steel has two main purposes: 1) To remove thermal oxide; 2) To dissolve chromium-depleted layer, to reinstate the corrosion-resistant properties of the stainless steel; A reliable, flexible and robust 3D model has been made for simulating the steel electrochemical pickling. This process is modeled as a multiphysics system for the current control. The model ...
H. Fuqua, G. Delory, I. de Pater, R. Grimm
University of California - Berkeley, Space Sciences Lab, Berkeley, CA, USA
University of California - Berkeley, Berkeley, CA, USA
Southwest Research Institute, Boulder, CO, USA
Electromagnetic sounding measurements utilize magnetic induction to constrain the interior geophysical properties of planetary bodies. Under some conditions, the Earth’s moon can be approximated by the response of a conducting sphere in a vacuum. Transient magnetic fields originating from the sun can interact directly with the moon, producing eddy currents that generate an induced magnetic ...
A. Fayolas , M.G. Sanku, M. Pascoa, M. Xynou
KTH Royal Institute of Technology, Stockholm, Sweden
The objective of the study is to investigate the chiral separation of Tröger’s base enantiomers using batch chromatography. Because of its resolution, chromatography is often the preferred method for chiral separations. The separation of Tröger’s base is resolved by using the COMSOL Multiphysics® software. It is modeled by one dimension geometry, having the length of the column set and computed ...
A.R. Sánchez-Guitard, E. Ruiz-Reina
University of Málaga, Málaga, Spain
In this work, we study the design of a new integrated system for Solar Water Heating that combines the solar thermal energy collection (primary circuit) with the heat storage (secondary circuit) into the same device. We have performed different finite element method simulations using COMSOL Multiphysics®, for solving the equations of heat transfer (conduction and convection) and those of fluid ...
Calculation in Coupling Coefficient of 1.3μm Quantum Dots Distributed Feed Back Laser with Half Etched Mesa Structure
Keishiro GOSHIMA et al.
Aichi Institute of Technology, Toyota, Aichi, Japan
Quantum Dots (QDs) laser is expected to have a low threshold current density and high thermal stability. We propose the QDs laser with the half-etched mesa distributed feedback (HEM DFB) structure. We accurately calculated the coupling coefficient in a HEM waveguide using the finite element method (FEM).