A. Levy, G.P. Picher Martel, P. Hubert
McGill University, Montreal, QC, Canada
Thermoplastic composite such as APC2 (Carbon/PEEK) are usually shipped as semi-finite tape products. Final product is obtained with forming by applying heat and pressure. A key phenomena is the squeezing of the tape. In this paper we compare the solution of the squeeze flow using a finite element method, an analytical model under lubrication assumption and experimental data. The finite element ...
J. Crompton, L. Gritter, S. Yushanov, K. Koppenhoefer
AltaSim Technologies, Columbus, OH, USA
Quenching from high temperature by fluid flow has been analyzed; when no phase transformation occurs heat transfer is a function of conduction and convection. Flow conditions may lead to turbulent flow that affects the heat dissipation over the surface. Analysis of heat transfer with phase transformation is more complex ue to the range of near-wall effects from film boiling, transition boiling, ...
Pulsed Eddy Current Probe Development to Detect Inner Layer Cracks Near Ferrous Fasteners Using COMSOL Modeling Software
V. Babbar, P. Whalen, T. Krause
Department of Physics, Royal Military College of Canada, Kingston, ON, Canada
Surface breaking cracks in conductive structures can be detected by conventional eddy current techniques. However, it is very difficult to detect inner layer defects in multilayered conductive structures either by conventional eddy current or ultrasonic methods. The transient/pulsed eddy current (PEC) technology can potentially overcome these limitations and is being developed for detection of ...
Voxtel, Inc, Beaverton, OR, USA
University of Oregon, Eugene, OR, USA
In this paper the heat transfer module in COMSOL is utilized to simulate internal heating of an Avalanche Photodiode due to light-induced current through a resistivity that depends on charge carrier concentrations in the device. Initial tests are done by modeling the heating process on a previously-solved silicon p-n junction as a proof of concept before advancing to a more complicated geometry. ...
D. Bassett, M. Carcasi, W. Printz
Tokyo Electron America, Austin, TX, USA
In semiconductor manufacturing, effective cleaning of structures with liquid is one of the most important and potentially difficult process steps. It is important because it remains the cheapest and most cost-effective method to remove particles and residues from the structures in order to prevent defects, but can also be difficult because as the structures dry, surface tension forces can cause ...
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 ...
A COMSOL Model of Damage Evolution Due to High Energy Laser Irradiation of Partially Absorptive Materials
P. Joyce, J. Radice, A. Tresansky, J. Watkins
United States Naval Academy, Annapolis, MD, USA
In this paper we present a transient numerical model of the heat transfer and thermochemical damage evolution in an IR translucent material using COMSOL Multiphysics. The model is evaluated using literature supplied and experimentally determined material properties for carbon black laden PMMA (polymethyl-methacrylate). This variant of PMMA was chosen because it is homogeneous, isotropic, and the ...
N. Elabbasi, X. Liu, S. Brown, M. Vidal, M. Pappalardo
Veryst Engineering LLC, Needham, MA, USA
Nordson EFD, East Providence, RI, USA
Laminar flow static mixers are accurate, inexpensive fluid mixing devices that can handle a wide range of fluids and mixing proportions. They have a wide range of industrial applications, especially in the consumer product, pharmaceutical, biomedical, and petrochemical industries. A good mixing quality is obtained when the outlet of the mixer has no concentrated volumes of either mixed materials ...
Pryor Knowledge Systems, Bloomfield Hills, MI, USA
The waveguide device modeled here specifically demonstrates the exploration of a small, but very important, subset of components of the family of microwave hardware devices designed to facilitate the optimized transfer of power from the generating source to the consuming load. Each of those components is called, in electronics terminology, a Tuned Stub. A stub is a length of transmission line ...
E. Gutierrez-Miravete, B. Fontenault
Rensselaer Polytechnic Institute, Hartford, CT, USA
General Dynamics-Electric Boat, Groton, CT, USA
A novel combined photovoltaic-thermal panel can simultaneously increase the conversion efficiency of the PV cell and utilize some of the excess thermal energy created by the conversion process (see Figure 1). The Conjugate Heat Transfer physics in COMSOL was used to create a two-dimensional, steady state model of such a combined photovoltaic cell-thermal panel. Figure 2 shows a magnified view of ...