M. Algappan, P. C. Chakravarthi, R. Keerthana, S. Mangayarkarasi, A. Kandaswamy
PSG College of Technology, Coimbatore, Tamil Nadu, India
A medical ventilator is an imperative device used to save life by delivering an assortment of air and oxygen into and out of the patients’ lungs to administer breathing or to assist obligatory breathing. The commercially available diaphragm based pressure sensors made up of silicon measure the air and oxygen flow. The proposed work utilizes the Piezo electric material for the pressure range ...
C. Soares, N. Padoin, A. C. Zimmermann, G. Cunha, P. B. Uliana, M. Wendhausen
Federal University of Santa Catarina, Florianópolis, SC, Brazil
PowerOpticks Technology Ltda, Florianópolis, SC, Brazil
In this study, COMSOL Multiphysics® software was applied to the investigation of the electromagnetic behavior of an optical crystal submitted to the magnetic field generated by electric current in a near positioned metallic conductor. Moreover, the influence of a ferromagnetic apparatus (magnetic concentrator) on the magnetic field acting upon the crystal was investigated. Three cases were ...
C. J. Morgan , S. R. Fischbach ,
 Jacobs ESSSA Group, NASA Marshall Space Flight Center, Huntsville, AL, USA
This study evaluates the effect of injector resistance on the mode shapes and complex eigenfrequencies of an injector/combustion chamber system by defining a high Mach-flow, potential flow form of the convective wave equation in the Coefficient Form PDE Mathematics interface. Background steady-state flow conditions are determined through a NASA Marshall Space Flight Center in-house fluid ...
A. Koushki ,
 Rostock University, Rostock, Germany
Solder connections are one of the most essential parts of the PCBs. Despite many well-known scientific works that have been done about overlap solder interconnection properties, such as fracture, fatigue and reliability studies, little attention have been given to the investigation of the connection between effects of electrical properties and laboratory soldering shortages such as effects of ...
D. Mi ,
 KEISOKU Engineering System Co., Ltd., Chiyoda-ku, Tokyo, Japan
Optimization of a typical electrochemical system with insulating shields is considered in this work, which objective is to reduce the current peak due to singularity and smooth the current density distribution along electrode surface. Moving mesh method was adopted to allow change in design variables, i.e., position and width of the insulating shields. It was found that combining optimization ...
F. Figueroa , P. Aguirre ,
 STW, Sensor Technik Wiedemann GmbH, Kaufbeuren, Germany
This poster presents an evaluation study of a couple of heat trap designs, analyzing the generation of Joule heating and heat dissipation characteristics. Through parametric simulations of the heat traps varying geometries, it is possible to see the generated temperature difference at a constant current. Simulating a soldering process, the heat traps are tested on time dependent studies to see ...
COMSOL Multiphysics® Software: Simplifying Workflow and Promoting Innovations in Nuclear Engineering at ORNL
P. K. Jain , J. D. Freels ,
 Oak Ridge National Laboratory, Oak Ridge, TN, USA
At Oak Ridge National Laboratory (ORNL), COMSOL Multiphysics® software has become a preferred software for certain multiphysics applications in nuclear engineering. This presentation will highlight some of the ongoing activities in the following areas: (1) Highly enriched uranium (HEU) to low enriched uranium (LEU) conversion of the High Flux Isotope Reactor (HFIR), (2) New and improved safety ...
T. Roy,, P. Ranjan, , R. Balasubramaniam
Homi Bhabha National Institute, Mumbai, India
Bhabha Atomic Research Centre, Mumbai, India
Micro electrical discharge machining (MEDM), a scaled down version of EDM process, is a micro machining process used to fabricate micro holes and intricate shapes in electrically conductive materials irrespective of its hardness. In this process, an electric spark is generated in the gap between the two electrodes (tool as cathode and workpiece as anode) submerged in dielectric that leads to a ...
I.Tomashchuk, P. Sallaman, and J.-M. Jouvard
Institut Carnot de Bourgogne, Université de Bourgogne, Le Creusot, France
In the case of electron beam welding of copper with stainless steel, two principal cases of welding pool morphology are possible: a droplet-like microstructure where the electron beam deviates to the copper side due to the thermoelectric effect, so the volume of molten copper is much bigger than steel, and an emulsion-like microstructure, volumes of melted materials are closely equal. ...
Energy Exchange During Electron Emission from Carbon Nanotubes: Considerations on Tip Cooling Effect and Destruction of the Emitter
M. Dionne, S. Coulombe, and J. Meunier
Department of Chemical Engineering, McGill University, Montreal, Quebec, Canada
Murphy and Good general theory for electron emission from metal surfaces was used to predict the field-emission capabilities of ideal arrays of vertically aligned carbon nanotubes (VACNT). The Nottingham effect was taken into account in order to explain experimental observation of a localized cooling of the VACNT tips during field emission and the total destruction of very short emitters at ...