Computational Modelling of Fluid Dynamics in Electropolishing of Radiofrequency Accelerating Cavities - new
H. Rana, L. Ferreira
Loughborough University, Leicestershire, UK
European Organisation for Nuclear Research (CERN), Genéve, Switzerland
Electropolishing is an electrochemical process that radiofrequency accelerating cavities undergo in order to improve their inner metal surface finishing. This is performed prior to their installation into particle accelerators, in order to enhance their accelerating properties. Using COMSOL Multiphysics® software it was possible to model the process throughout the cavity and study the fluid ...
Simulation and Experimental Validation of Direct Heating of Dhruva Fuel Rod for β Heat Treatment - new
B. Patidar, A. P. Tiwari, V. Patidar, M. M. Hussain, K. K. Abdulla
Bhabha Atomic Research Centre, Mumbai, Maharashatra, India
β heat treatment of Uranium rods is carried out for randomization of oriented grains (called texture) developed during hot rolling or hot extrusion operation. During this process, Uranium rods undergo heating of up to 740 Deg C followed by water quenching. The objective of this work is to see the feasibility of direct heating technique for heat treatment application. At present, heat treatment ...
Z. Huijbregts, H. Schellen, and J. van Schijndel
Department of the Built Environment
Eindhoven University of Technology
Eindhoven, The Netherlands
The two wooden cabinets of Jan van Mekeren that are located in Amerongen Castle show comparable wood damage; in particular large cracks in the cabinet doors are clearly noticeable. It is assumed that these cracks were caused by bad indoor climate conditions in the castle. Combined computational modelling of the indoor climate conditions in the castle and the hygroscopic and mechanical ...
An Elastic and Hyperelastic Material Model of Joint Cartilage - Calculation of the Pressure Dependent Modulus of Elasticity by Comparison with Experiments and Simulations
T. Reuter, and M. Hoffmann
Research Centre of Medical Technology and Biotechnology
Bad Langensalza, Germany
In this paper we introduce a elastic and hyperelastic model to describe the biomechanics of joint cartilage. As biomechanical property we calculated the pressure dependent E-modulus E = f(s) to describe the dependence of the biomechanical properties on pressure. The calculation based on the comparison and the iterative approach of the force-way-functions between the experiments and ...
M.Dimaki, P. Shah, D. Kwasny, J. Lange Moresco, and W. E. Svendsen
Department of Micro- and Nanotechnology, Technical University of Denmark, Lyngby, Denmark
Sunstone Capital, Copenhagen, Denmark
Lab-on-a-chip devices for cell culturing are becoming imperative in order to satisfy the needs for point-of-care or decentralized laboratory testing. Towards that goal we have developed miniaturized membrane based cell culture chambers for use within the field of chromosome analysis. The same principle was applied for the development of a miniaturized cell migration device. Flow and ...
Numerical 3D-FEM-simulation Made By COMSOL Multiphysics of a Microwave Assisted Cleaning System for a Diesel Sooty Particle Filter and its Experimental Validation
I. Imenokhoyev, A. Matthes, H. Gutte, and G. Walter
TU Bergakademie Freiberg
By means of a numerical 3D-FEM-simulation, some alternatives for the arrangement of the waveguide supplying the microwave energy to a cylindrical ceramic filter are investigated. The different alternatives are compared concerning a homogenous distribution of the electromagnetic field and the resulting microwave heating initiating the combustion of the diesel sooty particles. The results of ...
Application of System Identification Methods to Implement COMSOL Models into External Simulation Environments
A.W.M. van Schijndel and M. Gontikaki
Eindhoven University of Technology, Eindhoven, The Netherlands
Full coupling of distributed parameter models, like COMSOL, with the lumped models often lead to very time-consuming simulation duration times. In order to improve the speed of the simulations, the idea of using system identification methods to implement the distributed parameters models of COMSOL into external simulation environments, is explored. It is concluded that the system identification ...
R&D Process Design Principal Engineer, Procter & Gamble, Italy
Outline of presentation: Comsol is a very flexible platform, ideal to model rheology modification under flow Analogy with reactive flows allows modeling of both thixotropy and gelation with decent level of accuracy and predictability It is possible, to a certain extent, to use 1D rheology to extrapolate 3D behavior ---------------------------------- Keynote speaker's biography:Vincenzo ...
A. Pellegrini, A. Beucci, and F. Costa
ALTRAN Italia, Pisa, Italy
In this paper a methodology for calculating the infrared signature of complex objects is presented. The transient thermal analysis allows us to evaluate the temperature distribution on the investigated object, pointing out which parts tend to be warmer. These temperature values are handled in the post processing phase in order to evaluate the zero range radiance distribution and the radiance of ...
Underground Coal Fire Extinction Model Using Coupled Reactive Heat and Mass Transfer Model in Porous Media
S. Suhendra, M. Schmidt, and U. Krause
Laboratory II.2: “Flammable Bulk Materials and Dusts, Solid Fuels”, Federal Institute for Materials Research and Testing (BAM), Berlin, Germany
Green house gases emission associated with natural hazard of underground coal seam fire has been recognized as a worldwide problem leading to global warming threat. Therefore, in this paper a model to study underground coal fire is presented and the results will be devoted to strategic development of coal fire extinction technology within the framework of Sino-German Coal Fire Research ...