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Papers & Presentations

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Showing results 1 - 20 of 171

Chemical Engineering

	3D Dynamic Simulation of a Metal Hydride-Based Hydrogen Storage Tank In this paper, a 3D dynamic simulation for a portion of a metal hydride-based (LaNi5) hydrogen storage tank is presented. The model is based on heat and mass balances and considers coupled heat and mass transfer resistance through a... COMSOL Conference 2008, Hannover A. Freni, and F. Cipiti CNR- Institute for Advanced Energy Technologies “Nicola Giordano”, Messina, Italy
	Acid-Base Reactions Enhancing Membrane Separation: Model Development and Implementation Reactive extraction of organic acids from an aqueous solution to an alkaline stripping fluid is based on a selective barrier allowing permeation of non-polar molecules, which subsequently react with the stripping agent. The shift from the... COMSOL Conference 2009, Milan C. Bayer¹ , S. Stiefel¹ , M. Follmann¹ , and T. Melin¹ ¹ AVT Chemical Process Engineering, RWTH Aachen University, Aachen, Germany
	Advanced Modeling of Friction Stir Welding – Improved Material Model for Aluminum Alloys and Modeling of Different Materials with Different Properties by Using the Level Set Method Friction Stir Welding (FSW) has gained much importance throughout the last years. Beside comprehensive experimental work that has been carried out, the simulation of the welding zone is of major interest. Due to the high strains... COMSOL Conference 2008, Hannover S. Dörfler Wilhelm Gronbach GmbH, Wasserburg a. Inn, Germany
	A FEM Analysis of Transport Phenomena occurring during Vegetable Drying The aim of the present work is the formulation of a theoretical model describing the transport phenomena involved in a food drying process by a convective oven. The proposed model represents a general and predictive tool capable of... COMSOL Conference 2006, Milan S. Curcio University of Calabria
	A Generic Algorithm for Modelling Thermal Dynamics with a Moving Boundary Using COMSOL Multiphysics Droplets spray deposition is an important materials process in which materials in the form of particulates or droplets (a mixture of liquid, semisolid and solid) are projected onto an arbitrary collecting surface and consolidate to build... COMSOL Conference 2006, Birmingham J. Mi, and P. Grant University of Oxford
	A Moisture Transfer Model for Drying of Grain A kernel of grain is modeled as an isothermal sphere, with descriptive differential equations scaled or rendered into non-dimensional form, where moisture transfer is governed by internal diffusivity, not by surface conditions. The time... COMSOL Conference 2009, Boston K. Lund¹ ¹ Kurt Lund Consulting, Del Mar, California, USA
	Analysis of Solar Hot Water Storage In a Solar Hot Water System, the hot water from the solar collector enters at the top of the storage tank. A relevant question concerning the storage is what will the outlet temperature be. In the present work we present a way to... COMSOL Conference 2006, Boston K.O. Lund Applied Chemical and Engineering Systems
	Analysis of TAP Reactors Procedures Using COMSOL TAP (Temporary Analysis of Products) reactors are powerful instruments to study the kinetics of catalytic reactions. Their basic principle, exposition of evacuated solids of interest to narrow pulses containing very small amounts of... COMSOL Conference 2010, Paris S. Pietrzyk¹ , and G.S. Yablonsky² ¹ Unité de Catalyse et Chimie du Solide, Université des Sciences et Technologies de Lille, France ² Parks College, Saint Louis University, St. Louis, MO, USA
	Analyzing a Malfunctioning Clarifier with COMSOL’s Mixture Model Clarifiers are used to separate sludge and water in waste water treatment plants. In this paper we analyze a malfunctioning clarifier using the mixture model. We are able to receive model results that are reasonably close to measurements... COMSOL Conference 2008, Hannover A. de Niet, A. van Nieuwenhuijzen, and A. Geilvoet Witteveen+Bos, Deventer, The Netherlands
	An Analysis of Heat Conduction with Change of Phase with Application to the Solidification of Copper 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... COMSOL Conference 2009, Boston J. Michalski¹ , and E. Gutirrez-Miravete² ¹ Hamilton-Sundstrand ² Rensselaer at Hartford, Hartford, Connecticut, US
	A non-Conventional use of COMSOL to Solve a Complex 3D Geometrical Problem The purpose of this study was the optimization of an industrial furnace from a thermal point of view. Such a cylindrical furnace contains an Al-Mg molten alloy covered by a KCl-NaCl molten salt layer floating on it to prevent alloy... COMSOL Conference 2007, Grenoble J. P. Caire, and F. Jomard LEPMI, ENSEEG, Saint Martin d'Hères, France
	Application of FEMLAB on supercritical hydrogen components of the high flux isotope reactor cold source FEMLAB has played a key role in the design and safety analysis of several key components of the new High Flux Isotope Reactor (HFIR) hydrogen (H2) cold neutron source (CS) at Oak Ridge National Laboratory (ORNL). The main components of... COMSOL Conference 2005, Boston Freels, J.D. Oak Ridge National Laboratory, Oak Ridge, TN
	Approaches for Fuel Cell Stack Modeling and Simulation with COMSOL Multiphysics This study highlights the possibility of using COMSOL Multiphysics for solving large scale PEM fuel cell stack models in the order of several million degrees of freedom (DOF). First, different gas flow channel configurations are solved in... COMSOL Conference 2010, Paris C. Siegel^1,2 , G. Bandlamudi^1,2 , P. Beckhaus¹ , and A. Heinzel^1,2 ¹ Zentrum für BrennstoffzellenTechnik (ZBT), Duisburg, Germany ² University of Duisburg-Essen, Duisburg, Germany
	A Preliminary Approach to the Neutronics of the Molten Salt Reactor by Means of COMSOL Multiphysics^® The Molten Salt Reactor (MSR), proposed along with other five innovative concepts of fission nuclear reactor by the Generation IV International Forum (GIF-IV), represents a challenging task from the modeling perspective because of the... COMSOL Conference 2009, Milan V. Memoli¹ , A. Cammi¹ , V. Di Marcello¹ , and L. Luzzi¹ ¹ Nuclear Engineering Division, Department of Energy, Politecnico di Milano, Milano, Italy
	A Tool for Studying the Ecology of Hydrosystems The hyporheic zone is defined as an area where water and matter exchange through the sand, gravel, sediments and other permeable soils under and beside streams. Its impact on the hydro-system function is determined by the proportion of... COMSOL Conference 2006, Paris D. Peyrard¹ , Ph. Vervier¹ , S. Sauvage¹ , J.M. Sánchez-Pérez¹ , and M. Quintard² ¹ Laboratoire d’Ecologie des Hydrosystèmes, Toulouse ² Institut de Mécanique des Fluides de Toulouse
	Automotive Headlamp - Analytic Solution and Measurements of Condensation Inside a Headlamp Dew points higher than the inner surface temperature of a headlight can become cosmetic problems. In this paper, a suggested analytical approach of dew point analysis in headligths is brought forward. The analytical solution is based... COMSOL Conference 2006, Copenhagen E. Preihs General Motors Europe, Sweden
	Benchmarking as Key Element of Confidence Building in Safety Assessments for Radioactive Waste Disposal Verification of the codes applied for assessment of the long-term repository safety is typically one of the quality assurance requirements demanded by regulatory bodies, in the disposal of radioactive waste. In this paper, an... COMSOL Conference 2008, Hannover E. Weetjens SCK-CEN (the Belgian Nuclear Research Centre), Mol, Belgium
	Bio-Effluents Tracing in Ventilated Aircraft Cabins Ventilation and Indoor Air Quality (IAQ) are issues of very high interest, determining comfortable conditions for occupants and no-contaminated local atmosphere. The aircraft cabins are more confined and have a higher occupant density... COMSOL Conference 2009, Milan G. Petrone¹ , L. Cammarata¹ , and G. Cammarata¹ ¹ Department of Industrial and Mechanical Engineering, University of Catania, Catania, Italy
	Blistering of Industrial Floor on Concrete Substrate: the Role of the Air Overpressure Surface coating can fullfil their function satisfactorily over an extended period of time only if there is a good bond between the concrete substrate and the coating. The most numerous cases of blistering affect the airtight covers of the... COMSOL Conference 2010, Paris S.V. Aher² , P. Devillers¹ , G. Fau³ , B. Tranain³ , and C. Buisson¹ ¹ Centre des Matériaux de Grande Diffusion, Ecole des Mines d’Alès, Alès cedex, France ² Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh, India ³ Centre Scientifique et Technique du Bâtiment, France
	Boundary conditions in multiphase, porous media, transport models of thermal processes with rapid evaporation In modeling of thermal processing of biological materials with rapid evaporation, it is critical to provide boundary conditions consistent with the phenomena happening at the surface to accurately predict spatial temperature and moisture... COMSOL Conference 2009, Boston A. Datta¹ , and A. Halder¹ ¹ Biological and Environmental Engineering, Cornell University, Ithaca, New York, USA

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Chemical Engineering