Free convection in a vertical square cavity filled with a fluid saturated porous medium is investigated numerically by means of the software package FEMLAB 3.1i. The cavity has isothermal walls and is heated by an internal concentric... COMSOL Conference 2005, Boston Barletta, A., Lazzari, S. University of Bologna – D.I.E.N.C.A. – Lab. of Montecuccolino, Bologna, Italy
Three-dimensional flow analysis was performed by using COMSOL Multiphysics Chemical Engineering Module for the purpose of analyzing the flow properties and finding out the operating points of a test domain. Using material property table... COMSOL Conference 2009, Milan E. Solomon1 and V. Mathew1 1 Arcada University of Applied Sciences, Espoo, Finland
Stroke is caused by an interruption of brain blood supply and is one of the leading causes of death and disability. A mild reduction of 2-5°C in tissue temperature through hypothermia has shown reduced tissue infarct size, increased... COMSOL Conference 2012, Boston R. Sikorski1 , T. Merrill1 1 Rowan University, Glassboro, NJ, USA
In the paper we examine the accuracy of various meshes for different model regions and simple differential equations in 2D and in 3D. We study the potential equation for a single irregular domain (2D testcase 1), for a simple domain with... COMSOL Conference 2008, Hannover E. Holzbecher, and Hang Si Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Berlin, Germany
In this study, fluid-dynamics and thermal performance of active-chilled beams are investigated through 2D and 3D modeling in COMSOL Multiphysics. Three different typologies of air conditioning systems are considered. Results, obtained for... COMSOL Conference 2007, Grenoble G. Cammarata, M. Iacono, L. Cammarata, and G. Petrone Department of Industrial and Mechanical Engineering, University of Catania, Catania, Italy
COMSOL Multiphysics software was used to structurally optimize the Wright brothers’ flyer. The flyer was drawn in SolidWorks, imported and meshed in COMSOL. COMSOL Solid Mechanics module was used to analyze the flyer. Four of the... COMSOL Conference 2012, Boston A.H. Aziz1 , H. Pourzand1 , A.K. Singh1 1 Pennsylvania State University, University Park, PA, USA
In this study, FEMLAB® with MATLAB® was used to model active control of vortex shedding of a bluff body. A nonlinear steady state solution was necessary at Re=40, then a time dependent solver at Re=60 was necessary to start the... COMSOL Conference 2005, Boston Furlong, J.W.1, Lauderbaugh Saunders, L.K.2 1 Ingersoll Rand Corporation 2 University of Colorado, Colorado Springs
“NASA\'s Advanced Exploration Systems (AES) program is pioneering new approaches for rapidly developing prototype systems, demonstrating key capabilities, and validating operational concepts for future human missions beyond Earth... COMSOL Conference 2012, Boston J. Knox1 , K. Kittredge1 , R.F. Coker1 , R. Cummings1 , C.F. Gomez1 1 NASA - Marshall Space Flight Center, Huntsville, AL, USA
The present study relates to the reduction of the amount of air to gas leakage in a typical rotary regenerative air preheater of coal-fired steam generators, by means of computational thermo-fluid-dynamics. Due to the gaps, or clearances,... COMSOL Conference 2010, Paris L. Ferravante1 , C. Zagano1 , and V. Marra2 1 RSE S.p.A. - via Rubattino, Milano, Italy 2 COMSOL S.r.l. - Via Vittorio Emanuele II, Brescia, Italy
Analysis and optimization of air flow distribution inside drying kiln systems contribute to the improvement of the final product quality. The present study reports on the threedimensional numerical solution of air flow within a drying... COMSOL Conference 2010, Paris A-G. Ghiaus, M-A. Istrate, and A-M. Georgescu Technical University of Civil Egineering, Bucharest, Romania
We use COMSOL Multiphysics to model a gas bubble expansion in a viscous liquid initially at rest, a very common system for lightweight foamed materials from metal production and polymer processing. Modelling and simulation of foam... COMSOL Conference 2010, Paris B. Chinè1,2 , and M. Monno1,3 1 Laboratorio MUSP, Macchine Utensili e Sistemi di Produzione, Piacenza, Italy 2 Instituto Tecnològico de Costa Rica, Escuela de Ciencia e Ingenierìa de Materiales, Cartago, Costa Rica 3 Politecnico di Milano, Dipartimento di Meccanica, Milano, Italy
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
A state of permanent, isothermal nonwetting of a solid surface by a normally wetting liquid may be achieved by having the surface move tangentially to a liquid drop that is pressed against it. Surrounding gas is swept into the space... COMSOL Conference 2005, Boston Smith, M.K., Neitzel, G.P. The George W. Woodruff School of Mechanical Engineering, Georgia Institue of Technology, Atlanta, GA
This paper presents and discusses the first phase results of a wide ranging project concerning the study and prediction of the efficiency and energy performances of natural ventilation systems existing inside historic buildings. The air... COMSOL Conference 2008, Hannover C. Balocco Dipartimento di Energetica “Sergio Stecco”, Università degli Studi di Firenze, Firenze, Italy
Reynolds equation is used to analyze fluid flow through small gaps. As such, the solution of Reynolds equation provides critical information for a wide range of tribological problems. In any case where a lubricant resides between two... COMSOL Conference 2010, Boston K.C. Koppenhoefer1 , S.Y. Yushanov1 , L.T. Gritter1 , J.S. Crompton1 , and R.O. Edwards2 1 AltaSim Technologies LLC, Columbus, OH, USA 2 Cummins Fuel Systems, Columbus, IN, USA
The objective of the paper is to present the results of a numerical study undertaken to investigate the effect of the number of baffles on the efficiency of a contact tank. Several 2-D steady-state and time-variable numerical simulations... COMSOL Conference 2007, Grenoble C. Gualtieri, and G. Ippolito Dept. of Hydraulic and Environmental Engineering, University of Napoli Federico II, Napoli, Italy
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
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... COMSOL Conference 2009, Boston N.D. Barnett1 , and E. Gutirrez-Miravete2 1 General Dynamics-Electric Boat, Kingston, Rhode Island, USA 2 Rensselaer at Hartford, Hartford, Connecticut, USA
Computational fluid dynamics (CFD) modeling is a useful tool to gain an insight into various high temperature metallurgical processes such as the magnesium refining and the magnesium solid oxide membrane (SOM) electrolysis. In both... COMSOL Conference 2012, Boston X. Guan1 , E. Gratz1 , U. Pal1 1 Division of Materials Science and Engineering, Boston University, Brookline, MA, USA
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
