A. Beaucamp, R. Freeman, and Y. Namba
Chubu University, Kasugai, Japan
Zeeko Ltd, Coalville, UK
In the Fluid Jet Method, a polishing fluid is compressed and delivered through a nozzle, allowing the spot area to become continuously replenished with abrasives and coolant. Process parameters include: Abrasive type and concentration, Inlet pressure, Nozzle diameter, Impingement angle, Surface feed of spot. The simulation uses COMSOL’s turbulent 2-phase flow model, with the incompressible ...
Topology Optimization of Dielectric Metamaterials Based on the Level Set Method Using COMSOL Multiphysics
M. Otomori, and S. Nishiwaki
This presentation shows a level set-based topology optimization method for the structural design of negative permeability dielectric metamaterials incorporating the level set boundary expression based on the concept of the phase field method, and its optimization algorithm implemented by COMSOL Multiphysics. Furthermore, several design examples are provided to confirm the usefulness of the ...
Alcon Research Ltd., Lake Forest, CA, USA
Anomalous acoustic streaming is observed from sharp edges of vibrating solid bodies in fluids. The streaming velocities can be orders of magnitude higher than expected from the Rayleigh streaming at similar amplitudes of vibrations. Acoustic velocity of a fluid relative to a solid body diverges at a sharp edge giving rise to a localized time-independent body force acting on the fluid. The ...
R. Schmidt, T. Yousefi, B. Farahbaksh, M. Z. Saghir
University of Louisiana at Lafayette, Lafayette, LA, USA
Ryerson University, Toronto, ON, Canada
Fuel bundles in the CANDU (CANada Deuterium Uranium) reactor are designed for heating a pressurized coolant (heavy water) to generate electricity. The designs for the fuel bundles differ based on the number of heating elements. The flow of heavy water over the elements and inside the shell is highly turbulent. In this paper, COMSOL Multiphysics® is used to simulate the heavy water flow ...
J.M. Gozálvez-Zafrilla, A. Santafé-Moros, J.L. Díez-Ruano, J. Bondia
Institute for Industrial, Radiophysical and Environmental Safety (ISIRYM) - Universitat Politècnica de Valencia, Valencia, Spain
Instituto Universitario de Automática e Informática Industrial (AI2) - Universitat Politècnica de Valencia, Valencia, Spain
Microdialysis is a technique of continuous glucose monitoring in diabetic patients. In microdialysis, a saline serum is perfused into a microdialysis probe. Glucose pass from the plasmatic fluid through the porous membrane. The glucose concentration in the dialysate obtained is measured by an external analytical device. This preliminary work aimed to obtain a model to relate glucose ...
K. Gräfe, J. Mrongowius, T.M. Buzug
Institute of Medical Engineering, University of Luebeck, Germany
For the MPI imaging process, superparamagnetic iron oxide nanoparticles (SPIONs) are used as tracer material. The particles are excited by a sinusoidally varying magnetic field. A field-free point (FFP) is generated by the superposition of two magnetic fields. The FFP is important for the imaging process, since only the SPIONs in the FFP and its direct neighbourhood are essential for the ...
Kenji SETOURA et al.
The University of Tokushima, Tokushima, Tokushima, Japan
Temperature measurement of nanoparticles (NPs) under heating is an important technique in order to achieve potential applications such as photothermal cancer therapy and nanofabrication. We implemented the method to estimate the local temperature of a laser-heated gold NP on glass substrate in various surrounding media by applying the light scattering spectroscopy. We discuss experimental ...
The Effect of Space Charge due to the Auto-Ionization of Neutral, Hydrogenic States in Point-Contact Germanium Detectors at MilliKelvin Temperatures - new
D. Faiez, N. Mirabolfathi, B. Sadoulet, K. M. Sundqvist
Department of Physics, University of California - Berkeley, Berkeley, CA, USA
Department of Electrical & Computer Engineering, Texas A&M University, College Station, TX, USA
A class of semiconducting detectors, operated at temperature T~50mK, has direct application to the search for dark matter particle, when are able to simultaneously measure both the ionization and phonons created by particle interactions. We explore the effect of space charge accumulation in a germanium p-type point contact detector which arises due to the auto-ionization of hydrogenic ...
Finite Element Simulations of Pulsed Thermography Applied to Porous Carbon Fibre Reinforced Polymers - new
G. Mayr, B. Plank, J. Suchan, G. Hendorfer
University of Applied Sciences, Wels, Austria
Porosity in carbon fiber reinforced polymers (CFRP) as shown in figure 1 degrades the engineering performance, especially the interlaminar shear strength . In the aviation industry a porosity level of 2.5 % has become the maximum level of acceptance. The presence of air-filled voids (pores) has strong effects on the thermal diffusivity. Pulsed thermography offers a rapid, non-destructive ...
N. Semmar, M. Fournier, P. S. Alleaume , A. Seigneurin , , ,
GREMI-UMR7344, CNRS/University of Orléans, Orléans, France
Collegium Sciences et Techniques, Orléans, France
ST Microelectronics Tours SAS, Tours, France
Usually, in integrated circuits, the chip is brazed on leadframe and then, a polymer resin is molded around to create the packaging. On the first hand, the molding process at high temperatures will induce thermomechanical stress on the chip. As the leadframe, the chip and the braze have all different thermoelastic properties, these stress can be critical for the chip connections. To ...