Modeling and Simulation of Membrane Contactor Employed to Strip CO2 from Rich Solvents via COMSOL Multiphysics® - new
N. Ghasem, M. Al-Marzouqi, N. A. Rahim
United Arab Emirates University, Al-Ain, United Arab Emirates
A mathematical model is developed for the stripping of CO2 from rich solvent. The rich solvent (aqueous NaOH) is used in CO2 absorption from natural gas through gas-liquid hollow fiber membrane contactor. The polyvinylidene fluoride (PVDF) hollow fiber membrane was fabricated via thermally induced phase separation techniques. COMSOL Multiphysics software package is used in solving the set of ...
Finite Element Analysis of Electro-mechanical Deflection of Cantilevers for SPM and MEMS Applications
D. Moro, and G. Valdrè
University of Bologna
The understanding of the distribution of electrostatic forces at the nanoscale is of fundamental importance for the development of nanotechnology. In this work, in order to quantify the EFM cantilever/tip-sample interaction, we present a 3D static Finite Element Analysis of the electromechanical interaction between conductive probes and samples, using COMSOL Multiphysics. The simulation ...
M. Sas, L. Bizon, and A. Krsjak
Siemens VDO Automotive, Frenstat, Czech Republic
When developing sensors with electrical output in automotive applications, different optimizations are taken into consideration; geometry shape, placement of the sensor, ambient conditions, chemical interaction, material composition, electrical components and their influence, accuracy, response and durability.These parameters and factors are designed, evaluated and simulated by proper CAD/CAE ...
R. Yan1, D. Lynch2, T. Cayron3, D. Lederer1, A. Afzalian1, C. W. Lee1, and J. P. Colinge1
1Tyndall National Institute, Lee Maltings, Prospect Row, Cork, Ireland
2University College Cork, Cork, Ireland
3Institut National Polytechnique, Grenoble, France
In this paper, we investigate random doping fluctuation effects in Trigate SOI MOSFETs by solving the 3D Poisson, Drift-diffusion and Continuity equations numerically.The presence of a single doping impurity atom induces a threshold voltage (VTH) shift in the transistor. The threshold shift depends on the polarity and the physical location of the impurity atom. Our results show that the typical ...
Numerical Simulation of the Heat Transfer to Suspensions of Microencapsulated Phase Change Material (MEPCM)
F. Dammel, and P. Stephan
Technische Universität, Darmstadt, Darmstadt, Germany
The addition of microencapsulated phase change material particles can improve the characteristics of a heat transfer fluid. The numerical simulation of the heat transfer to such MEPCM suspensions with COMSOL Multiphysics is the subject of this contribution. The suspensions are treated as homogeneous liquids with appropriate models for viscosity, thermal conductivity and, most important, specific ...
Electro-Thermal Analysis of a Contactor: Comparing the Performance of Two Braze Alloys during the Temperature Rise Test
E. Gutierrez-Miravete, and G. Contreras
Rensselaer at Hartford, Hartford, CT, USA
General Electric Co., Plainville, CT, USA
The purpose of this study was to develop mathematical models of the coupled electro-thermal process in selected, typical contactors that could then be validated and verified by comparing model predictions with the results of previous studies and with experimental data obtained during a temperature rise test. The study employed Finite Element Analysis using COMSOL to simulate coupled ...
J.C. Boulware, and S. Jensen
Space Dynamics Laboratory, North Logan, UT, USA
Using COMSOL Multiphysics, studies were performed showing that thermomagnetic siphoning (TMS) is a sufficient manner of regulating the temperature of a bundle of current-carrying wires wrapped with a magnetorheological fluid (MRF) jacket. Because of Curie’s Law, the cooler MRF on the outside of the jacket is drawn towards the wires due to the induced magnetic field. The process continually ...
A. Traidia, and F. Roger
AREVA NP, Technical Center, Saint Marcel, France
ENSTA Paristech, Paris, France
Using COMSOL Multiphysics, a finite element model is introduced in this paper to describe the couplings between the welding arc and the weld pool dynamic in pulsed gas tungsten arc welding. The cathode, arc-plasma and melting anode regions are taken into account. The unified time-dependent model describes the heat transfer, fluid flow and electromagnetic fields in the three regions. The ...
Design and Development, via Prototype Testing and Multiphysics Modelling, of a Thermoelectric Generator (TEG) for Integration in Autonomous Gas Heaters
M. P. Codecasa, C. Fanciulli, R. Gaddi, F. Gomez Paz, and F. Passaretti
National Research Council of Italy - IENI Institute, Lecco, Italy
Italkero S.r.l., Modena, Italy
Studio di design Francisco Gomez Paz, Milano, Italy
An autonomous gas-heater for outdoor environments was selected as a test-case for cogeneration in gas-heaters and stoves, permitting installation and operation without need of an electrical network connection. A thermoelectric generator (TEG) was designed, converting part of produced heat into electrical power for auxiliaries (ventilation) or ancillary functions (illumination). Design approach, ...
University of the West Indies, St. Augustine, Trinidad and Tobago
RF propagation modelling in (30 – 1000 MHz) SAR region for predicting the location and intensities of constructive interference patterns within rectangular confined spaces using waveguide theory and ray tracing techniques.