Marin, T.1, 2, Utigard, T.1
1 Univeristy of Toronto, Materials Science and Engineering
2 Universidad de Chile, Departamento de Ingenieria de Minas
The rate of liquid copper oxidation plays an important role in the separation of impurities from copper during fire refining. A finite elements numerical model using FEMLAB 3.1 for the oxidation of liquid copper during top blowing of oxygen/nitrogen mixtures is presented and compared to experimental results. In this model, surface tension driven flow arising from gradients of oxygen ...
Modeling of Coupled Fluid Flow and Shear-induced Solidification Kinetics in Rheocasting of Aluminium Alloys
G. Maizza, and G. Lorenzatto
Politecnico di Torino
Dipartimento di Scienza dei Materiali ed Ingegneria Chimica
The model proposed by Schneider et al., for polymers is herein adapted in order to assess its suitability in elucidating the thixotropic behavior of aluminum alloys. The COMSOL Multiphysics program is employed to solve the inherent coupled mathematical problem, consisting in the kinetic ordinary differential equations and the momentum and energy transport partial differential equations. The ...
N. Lemcoff, R. Pastor, and E. Miravete
Rensselaer Polytechnic Institute, Hartford, CT
General Dynamics Electric Boat, Groton, CT
The objective of this study is to numerically evaluate the effectiveness of an energy recovery ventilator (ERV) during the summer and winter seasons. The energy recovery ventilator allows heat and mass transfer between two air streams separated by a membrane. The effects of varying the following parameters were examined: flows through the supply and exhaust ducts, height of the exhaust channel, ...
S.F. Neves, J.J.B.L.M. Campos, T.S. Mayor
CEFT – Transport Phenomena Research Center, Chemical Engineering Department, Porto University, Porto, Portugal
CeNTI - Centre for Nanotechology and Smart Materials, Rua Fernando Mesquita, Vila Nova de Famalicão, Portugal
A clothing system should offer the user a period of relatively comfort. However, changes in the ambient conditions over day affect the heat and mass transport in the system, influencing the user comfort perception. In order to gather information to allow the optimization of clothing systems, it is essential to understand the heat and moisture transfer occurring across multi-layer textiles. For ...
3D Hydrogeological Modeling - From a Theoretical 2D Model through a Medium Scale Application up to a Challenge: Simulations at Basin Scale
E. Cavalli, R. Simonetti, M. Gorla, N. Ceresa
CAP Holding, Milan, Italy
An alluvial aquifer system has probably conceived as a numerical modeling hell. We have chosen COMSOL Multiphysics® for two reasons: 1) FEM methods allow to use complex geometries; 2) multiphysics simulation permits to run a single model with all phenomena. We built a section with these physics: a) Darcy's law, b) Richards' equation, c) ALE to show surface deformation, d) Hydrogeologcal ...
3D COMSOL Multiphysics® Model of a Plate Heat Exchanger to Support a Laboratory Teaching Environment
N. Medeiros, W. Clark
Worcester Polytechnic Institute, Worcester, MA, USA
Chemical engineering students and practitioners need an understanding of fluid flow and heat transfer inside heat exchangers. Because the flow within plate heat exchangers is difficult to visualize, we developed COMSOL Multiphysics® simulations of plate heat exchangers for students to study alongside a physical heat exchanger in a laboratory setting. Simulative experiments allow students to ...
P. L. Mills, A. Nagaraj
Department of Chemical & Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA
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 development and process innovation by reducing emissions of unconverted SO2 in process reactor tail gases owing to ...
E. Laurenz, G. Füldner, L. Schnabel
Fraunhofer Institute for Solar Energy Systems (ISE), Freiburg, Germany
Adsorption heat exchangers (AdHXs) are important components in adsorption heat pumps and chillers, a primary energy efficient source of heating and cooling. Due to availability and established inexpensive manufacturing fin-and-tube type heat exchangers with beds of adsorption pellets in the finned space are widely used in state of the art products (Figure 1). For design and optimization the ...
D. Dalle Nogare and P. Canu
Department of Chemical Engineering Principles and Practice, University of Padova, Padova, Italy
This work investigates the effects of boundary conditions on the species profiles in heterogeneous catalysis, with low Péclet systems. Hydrogen combustion in Helium was chosen because of the high diffusivities. Furthermore, already at T=300°C over a Pt catalyst, kinetics is very fast and the composition gradients at the inlet extremely steep. The issue is analyzed with 1D models, ...
Hochschule Offenburg, M+V, Offenburg
Die freie Konvektionsströmung im quadratischen Behälter wird durch die numerische Simulation sehr gut wiedergegeben. Das zugrunde liegende numerische Simulationsverfahren ermöglicht die Berechnung und Visualisierung wichtiger Kenngrößen des Strömungs- und Temperaturfeldes. Die Folgearbeiten zielen nun auf eine Erhöhung der Temperaturdifferenz und auf veränderte Randbedingungen wie ...