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. ...
Multiphysics Modeling of Engineered Structured Sorbents for the Adsorption of Carbon Dioxide and Water Vapor from Manned Spacecraft Atmospheres
NASA, Huntsville, AL, USA
In NASA’s Vision for Space Exploration, humans will once again travel beyond the confines of earth’s gravity, this time to remain there for extended periods. Thus all spacecraft systems, including those for the separation of metabolic carbon dioxide and water from a crewed vehicle, must be minimized with respect to mass, power, and volume. This paper describes efforts to improve on ...
R. Coker, J. Knox, K. Kittredge
NASA - Marshall Space Flight Center, Huntsville, AL, USA
All spacecraft systems must be minimized with respect to mass, power, and volume. Here, we focus on current efforts to improve system efficiency and reliability for water separation systems to be used on crewed vehicles. These development efforts combine sub-scale systems testing and multi-physics simulations to evaluate candidate approaches. The best performing options will then be ...
O. Śliczniuk , B. Olejnik ,
 Wrocław University of Technology, Faculty of Chemistry, Department of Chemical Engineering, Wrocław, Poland
Nitrogen oxides are one of the more dangerous ingredients contaminating the atmosphere. They are considered to be almost ten times more harmful than carbon monoxide, and sulfur dioxide several times. A whole range of photochemical reactions involving nitrogen oxides are responsible for the rise of the so-called smog and there are particularly dangerous to living organisms and to climate. NO is ...
S.V. Aher, P. Devillers, G. Fau, B. Tranain, and C. Buisson
Centre des Matériaux de Grande Diffusion, Ecole des Mines d’Alès, Alès cedex, France
Indian Institute of Technology Kanpur, Kalyanpur, Kanpur, Uttar Pradesh, India
Centre Scientifique et Technique du Bâtiment, France
Surface coating can fullfil their function satisfactorily over an extended period of time only if there is a good bond between the concrete substrate and the coating. The most numerous cases of blistering affect the airtight covers of the concrete subjected to negative pressures of humidity from the support. The general objective of this study is the understanding of the blistering phenomenon. ...
Modelling and Simulation of Simultaneous Intrinsic Kinetics, Hydrogen Transport and Heat Transfer in Complex Hydride Hydrogen Storage Systems
G. A. Lozano, J. M. Bellosta von Colbe, T. Klassen, and M. Dornheim
Institute of Materials Research
In proper designs of hydrogen storage systems based on metal hydrides three processes are modelled and simulated: hydrogen flow (through the metal hydride bed), solid-state chemical transformation, and heat transfer (due to the highly exothermic chemical transformation). In this work, modelling and simulation of the hydrogenation in complex hydride tanks is performed using COMSOL, case study is ...