Über 5000 Fachbeiträge und Präsentationen zur Multiphysik-Simulation

Verification of the Numerical Simulation of Permafrost Using COMSOL Multiphysics® Software

E. Dagher[1], G. Su[1], T. S. Nguyen[1]
[1]Canadian Nuclear Safety Commission, Ottawa, ON, Canada

COMSOL® software was used to simulate the conductive heat transfer with phase change in the geological formations encompassed in permafrost surrounding a shallow thaw lake. The purpose of the simulation was to verify the adequacy of COMSOL to model such phenomena by comparing the COMSOL ... Mehr lesen

Photo-Biological Reactor for Organic Waste Consumption and Hydrogen Production

L. F. de Souza[1]
[1]Universidade Federal do Paraná, Curitiba, Paraná, Brazil

A simple steady-state photo-fermentative biochemical model was developed using the COMSOL Multiphysics'® Transport of Diluted Species physics interface. A dimensionless model seeks optimal physical parameters based on given biochemical parameters found in literature. A parametric sweep ... Mehr lesen

Thermal Study of Valve Regulated Lead Acid Batteries and Electronics Chamber Used in Stand-Alone Street Lighting Applications

D. Groulx[1], J. Skaalum[1], T. Jamieson[1]
[1]Mechanical Engineering, Dalhousie University, Halifax, NS, Canada

This paper presents a study on the heat generation of Valve-Regulated Lead Acid (VRLA) batteries used in off-grid streetlighting applications from PoleCo, a Halifax based company. One goal of the project was to produce validated COMSOL® models of the enclosure that holds these VRLA ... Mehr lesen

Finite Element Modeling for Inspection of CANDU® Steam Generators

S. G. Mokros[1], P. R. Underhill[2], J. Morelli[1], T. W. Krause[2]
[1]Department of Physics, Engineering Physics & Astronomy, Queen's University, Kingston, ON, Canada
[2]Department of Physics, Royal Military College of Canada, Kingston, ON, Canada

Steam generators (SGs) are used in CANDU® nuclear reactors as heat exchangers to convert water into steam using heat generated in the reactor core. Ferrous trefoil broach support structures prevent excessive vibration of thousands of SG tubes. A probe that uses pulsed eddy current (PEC) ... Mehr lesen

CFD Modeling and Analysis of a Planar Anode Supported Intermediate Temperature Solid Oxide Fuel Cell

N. Lemcoff[1], M. Tweedie[2]
[1]Rensselaer Polytechnic Institute Hartford, Hartford, CT, USA
[2]Enthone, West Haven, CT, USA

A planar anode-supported intermediate temperature solid oxide fuel cell operating on syngas fuel at 750°C was analyzed in this study. The effects of varying syngas fuel inlet compositions on species and temperature distributions, water gas shift reaction rate, potential for carbon ... Mehr lesen

COMSOL Multiphysics® Simulation of Heat Generation from Hydrogen/Deuterium Loading of Nickel Alloy Nanoparticles

G. Miley[1], A. Osouf[1], B. Stunkard[1], T. Patel[1], E. Ziehm [1], A. Krishnamurthy[1], K. J. Kim[1]
[1]University of Illinois at Urbana Champaign, Champaign, IL, USA

A key issue for the development of a LENR power unit involves the measurement and energy output of the reaction. Our team is currently studying a gas loaded nanoparticle-type cluster power unit [1] which pressurizes various nanoparticle alloys with either deuterium or hydrogen. The ... Mehr lesen

Diffusion and Reaction in Fe-Based Catalyst for Fischer-Tropsch Synthesis Using Micro Kinetic Rate Expressions

A. Nanduri[1], P. L. Mills[1]
[1]Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA

Fischer-Tropsch synthesis (FTS) is a highly exothermic polymerization reaction of syngas (CO+H2) in the presence of Fe/Co/Ru-based catalysts to produce a wide range of paraffins, olefins and oxygenates, often known as syncrude. Multi-Tubular Fixed Bed Reactors (MTFBR) and Slurry Bubble ... Mehr lesen

H2SO4 Catalysis: Perspective and Opportunities for Reducing SO2 Emissions

P. L. Mills[1], A. Nagaraj[2]
[1]Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA
[2]Department of Environmental Engineering, Texas A&M University, Kingsville, TX, USA

Introduction: Development of next-generation chemical processes that have zero emissions is a key environmental objective for sustainable development. The manufacture of H2SO4 by the air oxidation of SO2 to SO3 is an important technology where an opportunity exists for new catalyst ... Mehr lesen

Transport-Kinetic Interactions for SO2 Oxidation to SO3 in Particulate and Monolith Catalysts

P. L. Mills[1], A. Nagaraj[2]
[1]Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA
[2]Department of Environmental Engineering, Texas A&M University, Kingsville, TX, USA

Introduction: Development of next-generation chemical processes that have zero emissions is a key environmental objective for sustainable development. The manufacture of H2SO4 by the air oxidation of SO2 to SO3 is an important technology where an opportunity exists for new catalyst ... Mehr lesen

A Computational Fluid Dynamics Study of Fluid Catalytic Cracking Cyclones

J. W. McTernan[1], I. Abu-Mahfouz[2]
[1]Buell Division of Fisher-Klosterman Inc., Lebanon, PA, USA
[2]Pennsylvania State University - Harrisburg, Middletown, PA, USA

Fluidized Catalytic Cracking (FCC) regenerators utilize a fluidized bed to facilitate catalyst regeneration. Cyclones are used to separate the catalyst from the gas stream and return the catalyst to the fluidized bed; as the gas progresses through the system for further processing. This ... Mehr lesen

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