University of Minnesota-Duluth, Duluth, MN, USA
Significant submarine mineral deposits form when hot, metal-laden, saline fluids emerge onto the seafloor and mix with ambient seawater. Resulting density changes of fluid mixtures can trigger fluid buoyancy reversals, brine pool formation, and metal accumulation (Figure 1). While some of these processes are known from experiments, the inception, development, and physical-chemical processes ...
P. Van Ransbeeck , R. Benoot , B. Van Der Smissen 
 University College Ghent, Faculty of Science and Nature, Department of Mechatronics, Belgium
This publication aims to investigate conjugate heat and mass transfer around a clothed virtual manikin. This research can be performed at different scales: (1) at material scale where a piece of textile is investigated in 1D or 2D space or (2) at system level where a clothed cylindrical body (2D) or a complete manikin (3D) is modeled. The work is based on previous methods and results from ...
J. Blackburn , N. McCartney ,
 National Physical Laboratory, London, UK
We present computer simulation results for PEM fuel cells using COMSOL Multiphysics® software. We have developed novel PDE equations at NPL from first principles and these are more realistic than models typically used in literature. The theory includes Maxwell-Stephan and Nernst-Planck equations for the diffusion and electrochemistry as well as equations governing electrostatic and stress/strain ...
A. Ansari , S. Kumar ,
 Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India
The earlier work in our group has established that natural convection plays a dominant role in SLRFB. We used it to run a battery in which interestingly, the contents are agitated for brief spells when no current flows through it. The present work focuses on electrode configurations that harness the role of natural convection. In one such configuration, electrodes are positioned away from cell ...
J. Boon , H. Heuver , F. Velterop , H. van Veen , A. de Groot ,
 ECN, Petten, The Netherlands
 Pervatech, Rijssen, The Netherlands
Pervaporation is the selective evaporation of one component in a liquid mixture using a membrane. HybSi pervaporation membranes consist of porous ceramic support tubes with a thin selective layer on the inside or feed side. Modules for 7 and 19 membrane bundles (surface area up to 2.0 m2) are studied in COMSOL Multiphysics® for the absence of pressure drop on the permeate side. With a water flux ...
S. Birla ,
 ConAgra Foods, Omaha, NE, USA
Scraped surface heat exchangers (SSHEs) are commonly used in the food, chemical, and pharmaceutical industries for heat transfer, crystallization, and other continuous processes. One of the factor posing difficulties to heat transfer is viscosity. Highly viscous fluids tend to generate deep laminar flow, a condition with very poor heat transfer rates and high pressure losses involving a ...
Wall Effect on A Spherical Particle Settling along The Axis of Cylindrical Tubes Filled with Carreau Model Fluids
D. Song, R. Gupta, and R. Chhabra
Dept. of Chemical Engineering, West Virginia University, Morgantown, WV
Indian Institute of Technology, Kanpur, India
The effect of finite boundaries on the drag experienced by a rigid sphere settling along the axis of cylindrical tubes filled with Carreau model fluids has been examined systematically over a wide range of condition. As expected, the presence of finite boundaries leads to an increase in the drag force exerted on a falling sphere thereby retarding its descent due to the obstruction caused by ...
G. Mongatti, A. Borelli
Marchesini Group, Pianoro, Italy
In this model a three-dimensional heat transfer analysis was performed by using COMSOL Multiphysics\' Heat Transfer Module. The model is about the heating of a set of vials (Figure 1) in a current of hot air in the laminar regime. We used time dependent studies to predict the thermal behavior of the glass and to estimate the temperatures in the various points of the bottles at various times. ...
D. Song, R. Gupta, and Chhabra
West Virginia University, Morgantown, West Virginia, USA
Indian Institute of Technology, Kanpur, India
Heat transfer from a sphere having a uniform temperature and falling axially in a cylindrical tube filled with an incompressible power-law liquid is numerically investigated. The governing equations for simultaneous flow around a confined sphere and heat transfer to power-law fluids were solved numerically using COMSOL Multiphysics. It was found that the wall effects on the mean Nusselt number ...
J. van Schijndel
Eindhoven University of Technology, Eindhoven, The Netherlands
In order to predict, improve and meet a certain set of performance requirements related to the indoor climate of buildings and the associated energy demand, building energy simulation (BES) tools are indispensable. Due to the rapid development of FEM software and the Multiphysics approaches, it should possible to build and simulate full 3D models of buildings regarding the energy demand. The ...