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Showing 1 to 20 of 243 for “"COMSOL"”.
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Comsol Modelling of Uniform Corrosion of Used Nuclear Fuel Canisters
… In this work, CCM has been incorporated in COMSOL and validated with CCM. Once validated, the COMSOL model was used to examine the sensitivity of various parameters with respect to copper corrosion. It was found that initial chloride concentration, adsorption/desorption of cupric ions are …
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CFD Simulations of an Air-Conditioned Radiological Materials Staging Room: Comparison Between COMSOL and ANSYS Codes
… two CFD codes: ANSYS/Fluent finite volume and COMSOL finite element codes. The simulated facility contains 640 heat-generating 9975 packages, arranged in four rows and eight levels, equipped with a ventilation system and lighting. The outer walls of the facility are assumed to be completely …
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COMSOL finite-element analysis : residual stress measurement of representative 304L/308L weld in spent fuel storage containers
… finite-element analysis (FEA) packages such as COMSOL. Using a representative 304L/308L weld plate as a model in COMSOL, predicted residual stress shows some agreement with expected trends: high tensile stresses in the weld/ HAZ regions and compressive stresses in the surrounding material. …
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Computational Approaches to Improving Room Heating and Cooling for Energy Efficiency in Buildings
… Computational Fluid Dynamics (CFD) software COMSOL with standard computational mathematics software MATLAB, and design controllers that apply inlet airflow and heating or cooling to a room and investigate their effects. First, an appropriate continuum model, the Boussinesq System, is …
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Modeling and Optimizing IPMC Microgrippers
… (Ionic Polymer Metal Composite) fingers. Using Comsol Multiphysics and modeFRONTIER, these fingers were modeled and optimized for both force exerted and deflection. Using the Comsol model, we were able to determine the tip deflection and force output of many different IPMC fingers which were …
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Hydrodynamic Focused Passive Separation Under Continuous Flow in a Microfluidic Chip
… profiles in the reservoir were explored using Comsol Multyphysics. The experimentally observed particle trajectories and COMSOL predictions were in good agreement. Based on Comsol models a dimensionless parameter to relate the unique velocity profiles within the inlet reservoir to downstream …
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Analysis of energy balance in a helicon coupled to an inertial electrostatic confinement device
… IEC were explored. The first such analysis was a COMSOL simulation to determine the voltage as a function of position in the helicon dielectric tube when the IEC cathode is biased to several kilovolts. This COMSOL simulation contained no plasma and a ~20 V drop in the helicon dielectric tube was …
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Simulação numérica da propagação de ondas acústicas em dutos
… dos elementos finitos, através do software COMSOL Multiphysics®, versão 5.1. Comparações entre as ondaletas sem e com descontinuidades mostram que a metodologia é capaz de registrar o vazamento ou corrosão alveolar inseridos sinteticamente. Para o caso com vazamento, a onda de …
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Computational and experimental determination of the mixing efficiency of a microfluidic serpentine micromixer
… devices have been both simulated using COMSOL software, and experimentally verified to obtain the optimized parameter such as depth and velocity for better mixing efficiency. The COMSOL model has been validated by comparing the results with fluorescent images data of the experiment. The …
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Thermal Performance of AlGaN/GaN Based Power Switching Devices for Transformerless Inverters
… cost and time required for the design process. COMSOL Multiphysics is a Finite Element Method simulation software that has capabilities of combining different physics interfaces to simulate the effects of multiple interdependent physical phenomena. The use of these materials in switching devices …
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Fluid Flow Characterization in Rapid Prototyped Common Iliac Artery Aneurysm Molds
… the velocity of the fluid through the construct. COMSOL simulations of the half-vessel were conducted for comparison to the empirical observations. Plots describing the flow velocities along the maximum streamline path length were generated, and a one sample t-test was conducted at a 5% …
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A Novel Dual Modeling Method for Characterizing Human Nerve Fiber Activation
… of the human nervous membrane in tandem with COMSOL Multiphysics, a finite element analysis software tool. The initial research concentrated on the utilization of the Hodgkin-Huxley electrical circuit representation of the nerve fiber membrane. Further development of the project identified the …
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The Use of Schwarz-Christoffel Transformations in Determining Acoustic Resonances
… sweep in finite-element software such as COMSOL to determine what could possibly be an "optimal" distribution of eigenvalues. The hope is that this would allow us to draw conclusions about the acoustic quality of a pentagonally-shaped room. First, we find the eigenvalues using a common …
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Magnetostatic Modeling for Microfluidic Device Design
… better understand and unleash this technology, COMSOL®, which is a finite element analysis and multiphysics simulation software, has recently been used to model superparamagnetic particles in several applications. </p> <p> Two COMSOL® models were created based on a magnetic trapping system …
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Design and Modeling of Piezoelectric Micromachined Ultrasonic Transducer (PMUT) using a Multi-User MEMS Process for Medical Imaging
… their respective areas of the piezo layer using COMSOL Multiphysics. The resonant frequency of the fabricated PMUT ranges from 0.5 MHz to 2 MHz. Keysight Impedance Analyzer E4990A has been utilized for the electrical characterization of the fabricated PMUT devices to determine their respective …
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Nanolithographically defined semiconductor quantum dots
… The quantum confi nement is simulated by COMSOL.
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Study of Second Generation High Temperature Superconductors: Electromagnetic Characteristics and AC Loss Analysis
… using the Finite Element Method (FEM) package, COMSOL Multiphysics, and found that a Superconducting Halbach Array magnet can achieve all the requirements (magnetic field properties, geometry, portability, etc.) for the LFEIT system. The optimization study of the superconducting Halbach Array …
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Fluid Flow Characterization and In Silico Validation in a Rapid Prototyped Abdominal Aortic Aneurysm Model
… the velocity of the fluid within the aneurysm. COMSOL Multiphysics® was used to create a computational model of the same aneurysm, as well as obtain velocity measurements to statistically compare to those from the physical construct. There was no significant difference between the velocity …
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Ferrofluid spin-up flows from uniform and non-uniform rotating magnetic fields
… carrying coil or a permanent magnet; and (3) COMSOL Multiphysics spin-diffusion modeling shows that spin viscosity can also initiate a flow due to spin-velocity boundary conditions which can hinder magnetic nanoparticle rotation near a wall or allow particles to roll along a wall due to flow …
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