William B.J. Zimmerman
University of Sheffield
"All models are inverse problems". This presentation gives some clues to how COMSOL Multiphysics, and its integration with MATLAB, can run models 'backwards'. A number of examples are shown to exemplify the collaboration between modeling, calibration and interpolation. --------------------------------- Keynote speaker's biography: Professor WBJ Zimmerman BScEng (Princeton), MSc PhD ...
S. Pietrzyk, and G.S. Yablonsky
Unité de Catalyse et Chimie du Solide, Université des Sciences et Technologies de Lille, France
Parks College, Saint Louis University, St. Louis, MO, USA
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 gases, and measuring the concentrations of outgoing molecules permits to study practical catalysts under the conditions approaching those of molecular beam ...
Coupled Heat and Moisture Transfer in Building Components - Implementing WUFI® Approaches in COMSOL Multiphysics
B. Nusser, M. Teibinger
Holzforschung Austria, Vienna, Austria
Calculating time-dependent heat and moisture transports trough building components are important tasks in the area of building physics. A well known and worldwide used commercial software for this is WUFI®. From the scientific point of view the restricted access to governing equations is nevertheless a drawback of this software. In the present paper it is shown how the physical approaches used ...
E. R. Blatchley, and B.Z. Sun
Department of Civil Engineering, Purdue University, West Lafayette, IN, USA
Mineral precipitation on to the quartz surface of the lamp jackets in UV disinfection process (fouling) has been recognized as a major problem for UV radiation delivery during disinfection operation. Fouling behavior was observed to be induced thermally and influenced by hydraulic character of the UV disinfection configuration. Fouling process involves momentum, heat, and mass transport within ...
B. Niu, W. Yan, A.A. Shapiro, and E.H. Stenby
Department of Chemical and Biochemical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
As an effective method to cope with green-house gas emission, and to enhance oil recovery, injection of carbon dioxide into oil reservoirs has obtained increasing attentions. The flooding process involves complex phase behavior among oil, brine and CO2, and geochemical reaction between CO2 and rock. COMSOL Multiphysics® was first applied to simulating two flooding processes with known ...
Error Analysis in Estimating Temperature-Dependent Thermal Diffusivity and Kinetic Parameters using Heat Penetration Data
K.D. Dolan[1,2], A.R. Sommerlot, and D.K. Mishra
Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan, USA
Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
Growing consumer demand for nutraceuticals has stimulated interest by food companies to increase levels of these health-promoting compounds. Thermal processing of canned foods in a retort produces a unique problem: some of the nutraceuticals are highly sensitive to temperature, and require accurate parameter estimates to predict their fate during processing. Error in temperature measurement due ...
E. M. Fontes
Catella Generics AB
Computational mathematical modeling has allowed scientists and engineers to perform better, faster, and more economical virtual experiments. Through mathematical modeling, an application expert can simulate performance characteristics during different operating conditions and thereby accelerate the pace of understanding new electrochemical system in relation to specific application ...
Application of FEMLAB on supercritical hydrogen components of the high flux isotope reactor cold source
Oak Ridge National Laboratory, Oak Ridge, TN
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 interest for the detailed analysis capability of FEMLAB are those where the H2 temperature spans a large range causing the fluid properties to change dramatically ...
Karkri, M.1, Jarny, Y.2, Mousseau, P.3, Poncet, E.1
1 CNRS UMR 6174 Institut FEMTO-ST - Département CREST, Belfort France
2 UMR CNRS 6607 Ecole Polytechnique de l’Université de Nantes, France
3 UMR CNRS 6144 IUT de Nantes, France
Extrusion is one of the important manufacturing methods in many industries. In order to obtain the desired product quality and characteristics, the knowledge of the thermal state of the die is very important. In the present study, a two-dimensional conjugate heat transfer model has been developed for non-Newtonian materials being processed in the extrusion die. The modeling equations for the ...
Modeling the Coupled Mass Transfer Phenomena During Osmotic Dehydration of Fresh and Frozen Mango Tissues
J. Floury, Q.T. Pham, and A. Le Bail
 UMR STLO–INRA–Agrocampus
 School of Chemical Engineering and Industrial Chemistry, UNSW
 UMR CNRS GEPEA–ENITIAA, Nantes
In this paper, we present a mathematical model for simulating the mass transfer, during the osmotic dehydration of mango cubes. The mass balance equation for the transport of each constituent is established separately for intracellular and extracellular volumes but accounts for the mass exchange across the cell membrane and the shrinkage of whole tissue.