G. Petrone, C. Balocco
BE CAE & Test, Catania, Italy
Department of Industrial Engineering, University of Firenze, Firenze, Italy
High levels of Indoor Air Quality (IAQ) in Operating Theatres (OT) is an important issue in order to contribute in prevention of Surgical Site Infections (SSI). Despite of specific plant layouts are applied for OT ventilation (e.g. unidirectional flow), the effective use conditions can heavily modify the design microclimate and air quality levels. Medical staff presence and movements and sliding ...
M. Sramek, J. Weiss, R. Kohlus
Department of Food Processing Engineering, Institute of Food Science and Biotechnology, Hohenheim University, Stuttgart, Germany
Department of Meat Science and Food Physics, Institute of Food Science and Biotechnology, Hohenheim University, Stuttgart, Germany
The mathematical model is closely related to the development of a novel drying method for high viscous and sticky materials. The foamed state facilitates diffusive moisture transport and therefore accelerating the drying process. Moreover the dried porous material can be easily converted into the powder. The mathematical modelling aimed at evaluating the complex drying process as basic ...
J. Hilgert, H. Schmidt, and J. Dos Santos
GKSS Forschungszentrum GmbH, Geesthacht, Germany
Danmarks Tekniske Universitet, Kgs. Lyngby, Denmark
Based on the example of a bobbin tool Friction Stir Welding process model a technique to model thermal processes with a moving geometry in COMSOL is introduced. The described approach allows modeling the transient temperature fields in setups that are governed by a large relative movement of different parts of the geometry. The movement of the tool is realized in a sequence of discrete time ...
B. Watzke, H. Deyber, and H. Limbach
Nestlé Research Centre, Lausanne, Switzerland
Research Centre, Lausanne, Switzerland
The freezing curve of the food material was extracted from Differential Scanning Calorimetry experiments. A heat conductive model was generated in COMSOL, including the thermo-physical characteristics and the phase transition behavior. The resulting temperature-time evolutions at different positions in space were in excellent agreement with our experimental data. Changing scale, the variation ...
I. Bodey, R. Arimilli, and J. Freels
Dept. of Mechanical, Aerospace and Biomedical Eng., The University of Tennessee, Knoxville, TN
Research Reactors Division, Oak Ridge National Laboratory, Oak Ridge, TN
The High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory (ORNL) is an 85 MW, light-water moderated, research reactor that operates at low temperature and high pressure. The HFIR is presently scheduled to convert from a high enriched uranium fuel (HEU) to a low enriched uranium fuel (LEU) in 2019. Due to cost constraints, not all experiments will be repeated for the LEU fuel ...
Ingegneria Senza Frontiere, DESE, Università di Pisa, Pisa, Italy
In the Andean region of Southern Peru, poverty and climate are extreme: at 4000mt asl, insolation is among the highest in the world but the temperature varies more than 30 degrees between day and night. At the community of Livitaca (Cuzco), the association “Ingegneria Senza Frontiere” is working on a project of bioclimatic architecture. In this context, it is devised a low cost drainback ...
S. Curet, M. Mazen Hamoud-Agha
GEPEA, UMR 6144, CNRS, ONIRIS, Université de Nantes, Nantes, France
In this study, COMSOL®4.2a is used to model a microwave heating process in a TE10 rectangular waveguide. The sample consists of a small cylindrical Ca-alginate gel (D = 8 mm, H = 10 mm) inoculated with bacteria Escherichia Coli K12. The sample is placed along the microwave propagation direction into the waveguide. Maxwell’s equations and heat transfer are coupled to a microbial inactivation ...
J. D. Freels, P. K. Jain, C. J. Hurt
Oak Ridge National Laboratory, Oak Ridge, TN, USA
The University of Tennessee, Knoxville, TN, USA
Our safety analysis group in the Research Reactors Division of Oak Ridge National Laboratory supports a project to investigate the production of Pu-238 isotope for missions of deep space travel in the High Flux Research Reactor. COMSOL Multiphysics® has been used to support this activity in the past, and we have successfully installed and irradiated three different target designs. The gas-gap ...
M. Giansetti, A. Pezzin, S. Sicardi, G. Rovero
Politecnico di Torino, Torino, Italy
Within wool textile industries, a very important role is played by the so-called finishing processes, in which the textile substrate undergoes steam treatments to achieve the desired level of stabilisation and appearance. Process parameters, namely temperature and moisture content, are known only at the beginning of the process but not in the textile material being treated, where the actual ...
EMIX, St Maurice La Souterraine, France
The optimisation of dimensions, materials choice of heaters in annealing furnaces are done with COMSOL Multiphysics® in 2D-axisymetry. Heat losses sources are identified and corrective actions can be taken in function of simulation results. A power saving of more than 50% is achieved thanks to simulations.