M. Christian, S. Firebaugh, A. Smith
United States Naval Academy, Annapolis, MD, USA
This project utilizes the heat transfer module of the COMSOL Multiphysics environment to model the effects that an ohmic heating probe will have on neural tissue. The model quantifies the thermal impact of active components embedded on a neural micro probe by solving the Penne’s bioheat equation with an external MATLAB function to determine the heat generation along the length of the probe. The ...
J.R. Puentes, T.A. Osswald, S. Schick, J. Berg
Polymer Engineering Center, University of Wisconsin, Madison, WI, USA
TEEL Plastics, Baraboo, WI, USA
The extrusion of polyolefin pipes suffers degradation due to mechanical design problems of the extrusion die that is commonly used. This study uses numerical and computational approaches to detect problematic areas in the die geometry. Simulations show that in the conventional die there are areas of stagnation and recirculation of the melt flow, resulting in greater residence times, one of the ...
G. Zhu, E.M. Dede
Toyota Research Institute of North America, Ann Arbor, MI, USA
In previous work, a two-dimensional (2D) model was carried out to simulate the phononic band structure of a phononic crystal with square lattice structure, but this model did not account for the out-of-plane phonon dispersions . In fact, for 2D films used for coating materials, it is more interesting to understand their cross-plane properties. In this work, the phonon dispersion relation of ...
M. Alshareef, A. Alshareef, V. Krishna, M. Kindy, T. Shazly
College of Medicine, Medical University of South Carolina, Charleston, SC, USA
Department of Biomedical Engineering, Duke University, Durham, NC, USA
Department of Neurosurgery, Medical University of South Carolina, Charleston, SC, USA
Department of Mechanical Engineering, University of South Carolina, Columbia, SC, USA
The incidence of spinal cord injury (SCI) in the US is approximately 12,000 individuals annually, due to various forms of trauma and disease. Diminished flow over a prolonged period of time can cause permanent spinal damage. We constructed a 3D finite element model of the spinal cord to examine the role of compressive loading on spinal blood flow. It was found that the type of forces on the ...
R. Nopper, J. Clark, C. Miller
DuPont Company, Wilmington, DE, USA
DuPont Company, Beaumont, TX, USA
Stress and failure in the earth have long been observed to couple to hydrogeology. Poroelastic models, introduced by soil scientists, can account for strong two-way coupling between porous crustal rock formations and their pore fluids. Current efforts to provide new energy resources (water injection in EGS, enhanced oil recovery) and to reduce pollution (CO2 sequestration, deepwell disposal) ...
I.M. Abdel-Motaleb, K. Ravanasa, K.J. Soderholm
Department of Electrical Engineering, Northern Illinois University, DeKalb, IL, USA
Department of Restorative Dental Sciences, College of Dentistry, University of Florida, Gainesville, FL USA
Studying teeth grinding behavior and other oral conditions requires the ability to accurately measure the pressure on the teeth. Placing a sensor in the mouth requires small size devices with powering and measurement techniques that do not hinder the normal life of the patient. To meet these requirements, we designed, using COMSOL, a small, easy to read MEMS capacitive force sensor, with ...
Caribbean Industrial Research Institute, Calibration Laboratory, University of the West Indies, St. Augustine, Trinidad and Tobago
The Polymer Electrolyte Membrane fuel cell is one of the most promising green technologies for addressing portable, as well as transportation power needs. However, the science behind the fuel cell, in many regards, is still an enigma, and even more so, with the vast numbers of novel materials created annually; designed to offset issues related to durability, conductivity, cost- effectiveness and ...
Y. Li, M. Jain, K. Nandakumar
Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA, USA
The micro-nanometer sized droplets have tremendous applications in bio-diagnostics, polymerization processes etc. In this work, we numerically investigate the droplet formation process of silicone oil in aqueous solution in a MFF device. A conservative level-set method is adopted to numerically model the droplet formation process numerically. The mono-dispersed and poly-dispersed droplet ...
Analysis of Superheater Tubes with Mutual Irradiation as Applied to a Solar Receiver Steam Generator
N. Lemcoff, S. Wyatt
Rensselaer Polytechnic Institute, Hartford, CT, USA
Alstom Power, Windsor, CT, USA
The objective of this paper is to analyze the temperature variations within a superheater tube of a solar receiver steam generator. The tube is heated by concentrated, collimated solar irradiation with major cooling by an internal steam flow. The influence of heat loss by radiation, internal convection, and conduction are considered. Analytical models are obtained for an isolated tube, and the ...
Clemson University, Clemson, SC, USA
Surface acoustic wave (SAW) devices are commonly used as wireless filters, resonators, and sensors. The confinement of acoustic energy near the surface of a piezoelectric substrate in a SAW sensor makes it highly sensitive for discerning surface perturbation. As sensors, SAW devices have the potential to provide a high-performance sensing platform with capabilities of remote and high-temperature ...