P. Mercure, and R. Haley
The Dow Chemical Company, Midland, MI
ATM Research, Midland, MI
We demonstrate cartogram construction, where a geographical map is distorted to represent some measure, for example population, while trying to keep the shape of regions recognizable. We then apply this cartogram construction technique to optimize thermocouple locations. A heat generation and conduction model is used initialize the cartogram construction algorithm. A uniform distribution of ...
Optimization of a High-Temperature High-Pressure Direct Wafer Bonding Process for III-V Semiconductors
R. Martin, J. Kozak, K. Anglin, and W. Goodhue
University of Massachusetts Lowell
Many optoelectronic devices utilize a heterojunction of a pair semiconducting materials including high-efficiency MEMS devices, solar cells, LEDs, and VCSELs. One fabrication technique which achieves such a device is direct wafer fusion. To optimize the process, COMSOL Multiphysics 4.0 was used to test various geometric configurations of the fixture. 2D and 3D models were created in order ...
J. Crompton, S. Yushanov, L. Gritter, and K. Koppenhoefer
AltaSim Technologies, LLC.
Microwave heating is an important process for many commercial, industrial and household applications. In microwave heating applications, the energy is introduced directly into the volume of the material. As a consequence the quality of the process is highly dependent on the uniformity of the electromagnetic field distribution. Thus, developing a uniform electromagnetic field inside the ...
P. Kakria, A. Marwaha, and M. S. Manna
Electronics & Communication department, SLIET Longowal, Distt. Sangrur, Punjab, India.
Electrical & Instrumentation department, SLIET Longowal, Distt. Sangrur, Punjab, India.
In this paper, the attempt has been made to design and analyze single strip shielded Microstrip line with capacitive coupling. The main objective is to compute the capacitance per unit length of shielded Microstrip line using Finite Element technique. The computational and simulation work has been carried out with the help of FEM based COMSOL Multiphysics software. The shielded Microstrip ...
T. Burnett, and D. Lower
CH2M-WG Idaho, LLC
The Idaho Cleanup Project at the Idaho National Laboratory
Idaho Falls, ID
Hot Isostatic Pressing (HIP) has been selected as a means of treating calcined high level waste (HLW). The process combines high temperature and pressure to densify the HLW in to a mineral similar to the geologic formulation of granite. This study uses COMSOL to predict densification and shape deformation of a stainless steel can filled with HLW. Two approaches were used to model densification ...
Institute of Physics CAS
Chiral SPPs can be generated by linearly polarized light incident at the end of a nanowire, exciting a coherent superposition of three specific nanowire waveguide modes. Chirality is preserved in the emitted photons, creating a subwavelength ¼ wave plate.
E.J.P. Santos, L.B.M. Silva
Laboratory for Devices and Nanostructures, Departamento de Eletrônica e Sistemas, Universidade Federal de Pernambuco, Várzea, Recife, PE, Brasil
Transmission-line transducers are used for the measurement of absorption and reflection of different materials, such as: liquids, granular medium, and ground. A simplified methodology for calculation of scattering parameters of such transducers is presented. The transducer cell is partitioned at each interface and the partial scattering equations are calculated, considering two interfaces at a ...
E. Firat, G. Bandlamudi, M. Crisogianni, P. Beckhaus, A. Heinzel
Centre for Fuel Cell Technology (ZBT), Duisburg,NRW, Germany
Heat management is crucial for the satisfactory operation of HT-PEM (High temperature polymer-electrolyte-membrane) fuel cells. Current work investigates the use of heat pipes in a HT PEMFC stack consisting of 24 cells, each with an active area of 300 cm^2. Heat pipes are known to be thermal superconductors operating on the principles of high convective heat transfer and phase transition. ...
E. Scotoni, C. Tozzo, D. Zoccarato, F. Paganini
TMC Italia, Busto Arsizio, Italy
COMSOL, Brescia, Italy
A three phase transformer with very low harmonic pollution transferred back to power line is here presented. In fact, thanks to the described setup, intermediate harmonics (5th and 7th) are not going out back to the power line feeding the primary. These results has been extensively validated versus measurements performed on produced and shipped machine. With these results, TMC is then featuring ...
Numerical Simulations of Methane Aromatization with and without a Ceramic Hydrogen Separation Membrane
Z. Li, C. Kjølseth, S. Hernandez Morejudo, R. Haugsrud
University of Oslo, Department of Chemistry, FERMiO, Oslo, Norway
Protia, Oslo, Norway
University of Oslo, Department of Chemistry, InGAP, Oslo, Norway
Oxygen-free methane aromatization has been attracting growing attention due to a potential means for producing high valuable products such as aromatics and hydrogen. Many studies have been focused on catalysts screening and characterization, and elementary thermodynamic steps of the reaction. However, little attention has been paid to fluid dynamics which are important for an industrial ...