N.D. Barnett, and E. Gutirrez-Miravete
General Dynamics-Electric Boat, Kingston, Rhode Island, USA
Rensselaer at Hartford, Hartford, Connecticut, USA
This paper report on a study of the hydrodynamics of skimboards and surfboards using the computational fluid dynamics (CFD) module in COMSOL. The study analyzes the flow in a thin water layer underneath a skim board in a 2-D Cartesian coordinate. Three different sets of boundary conditions were employed and one of them produced the best agreement with previous findings.
P. Masson, and R. Meinke
Advanced Magnet Lab, Palm Bay, Florida, USA
Superconductors have the unique capability of trapping magnetic flux. This feature has the potential to enable and improve several applications including high power density rotating machines. Current material used as trapped flux magnets (TFM) is single domain YBCO that present numerous limitations interms of performance, stability and size. One way to overcome the limitations is to use thin ...
Study of Fluid and Mass Adsorption Model in the QCM-D Sensor for Characterization of Biomolecular Interaction
H.J. Kwon, C.K. Bradfield, B.T. Dodge, and G.S. Agoki
Department of Engineering and Computer Science, Andrews University, Berrien Springs, Michigan, USA
Increasing attention has been paid to application of the quartz crystal microbalance with dissipation (QCM-D) sensor for monitoring biomolecular interactions. This paper focuses on a practical application of protein-protein binding affinity measurement at low concentrations and minimal sample sizes (50-200 μl of 20-200 nM), which results in low signal measurement. A model simulating fluid ...
Department of Mechanical Engineering, University of Washington, Seattle, Washington, USA
A comparison of the commercial code COMSOL is performed with the bench-mark solutions provided by the literature for a tall, differentially heated rectangular cavity for aspect ratios of 8, 15, 20, and 33. At small Rayleigh numbers the flow is dominated by conduction. As the Rayleigh number is increased the flow becomes unstable, first resulting in multicellular secondary flow patterns, and then ...
An Analysis of Heat Conduction with Change of Phase with Application to the Solidification of Copper
J. Michalski, and E. Gutirrez-Miravete
Rensselaer at Hartford, Hartford, Connecticut, US
The goal of this study was to determine the possibility of using the finite element in COMSOL Multiphysics program to obtain a high accuracy solution to a moving boundary problem, specifically, the solidification of copper. A one-dimensional geometry in Cartesian coordinates was used to investigate the solidification of initially liquid copper from a chilled wall maintained at fixed temperature. ...
Multiphysics Simulation of Isoelectric Point Separation of Proteins Using Non-Gel Microfluidic System
A. Contractor, N. Xue, J.B.Lee, A. Balasubramanian, and G. Hughes
Lynntech, Inc., College Station, Texas, USA
Micro Nano Devices and Systems (MiNDS) Laboratory, Department of Electrical Engineering, University of Texas at Dallas, Texas, USA
A portable device that can identify protein and peptides real time in complex biological systems such as human bodily fluids reliably and accurately is in high demand to properly diagnose and treat medical conditions. Lynntech has developed an innovative Polydimethylsiloxane (PDMS) based microfluidics system with a unique design utilizing multi-channel inlets and outlets for isoelectric point ...
Marc K. Smith
Professor of Mechanical Engineering, Georgia Institute of Technology
Simple, accurate CFD simulations using COMSOL Multiphysics are used in a senior-level undergraduate course as a means to explore a number of fluid flows with the intent of developing a deep understanding of the underlying fluid mechanical mechanisms involved in the flows. Students also learn about the finite element method, how to properly pose the underlying mathematical model for the fluid ...
V. Babbar, and T. Krause
Department of Physics, Royal Military College of Canada, Kingston, Ontario, Canada
Transient eddy current (TEC) technique is being developed for detection of flaws located at depth within multilayer aluminum structures. The present work involves finite element modeling using COMSOL Multiphysics software to simulate different types of probes by changing some of these parameters in an attempt to generate an output signal of optimum magnitude and shape. Some of the model results ...
Numerical Study of the Electrical Properties of Insulating Thin Films Deposited on a Conductive Substrate
R.A.Gerhardt, and S. Kumar
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA
Parametric finite element simulations were performed to study the effect of film thickness, and electrode size on the different impedance parameters for insulating thin films deposited on a conductive substrate. COMSOL Multiphysics® was used to solve the quasi-static form of Maxwell’s electromagnetic equations in time harmonic mode. Several types of 2D models (linear and axisymmetric) ...
T.A. Jankowski, D.P. Johnson, J.D. Jurney, J.E. Freer, L.M. Dougherty, and S.A. Stout
Los Alamos National Laboratory, Los Alamos, New Mexico, USA
The induction heating coils used in the plutonium casting furnaces at the Los Alamos National Laboratory are studied here. A cylindrical graphite test article has been built, instrumented with thermocouples, and heated in the induction coil that is normally used to preheat the molds during casting operations. The experiments have been modeled in COMSOL Multiphysics and the numerical and ...