Articles techniques et présentations

Measurement of three dimensional, three component velocity fields is central to the development of effective micromixers for bioassays and lab-on-chip mixing applications. We present a hybrid experimental-numerical method for the generation of 3D flow information from 2D particle image ... En savoir plus

Laser Welded Blank solutions enable to reduce vehicles weight and to optimize their crash performances by means of simultaneous tuning of different grades and thicknesses. The present work aims to characterize numerically and experimentally materials mixing during laser welding. For ... En savoir plus

This work concerns the performance of an oxidation catalyst used in a NOx storage and reduction system. The oxidation of NO is the main objective of this study, where the presence of CO and propene has also been taken into account. Experimental data has been determined on a monolithic ... En savoir plus

Hybrid laser-MIG arc welding has very interesting advantages compared to laser welding or arc welding used separately. It is known that improvement of productivity results in higher welding speeds, thicker welded materials, joint fit-up allowance, better stability of molten pool, and ... En savoir plus

The equatorial region of Titan, the largest satellite of Saturn, has extensive expanses of aeolian dunes revealed in synthetic aperture radar (SAR) images and suggested to be composed of organics or organic-coated water ice. The dunes are among the youngest surface features and appear to ... En savoir plus

Laser welding is often considered to be a superior technique over different conventional welding methods and has been gradually evolved as an efficient manufacturing process. It is a high energy density fabrication process and generally employed for fabricating intricate shapes/contours ... En savoir plus

In-situ electrical heating technologies are among the most recent technologies used for bitumen recovery from tar sand and oil shale. These technologies have limited environmental impact because there is little disturbance of the land, and water and solvents are not used. Two-phase ... En savoir plus

A drying chamber for dehydration purposes is simulated; we model a chamber chimney system coupled to a solar collector as the heat source. Using both, the Heat Transfer Module and CFD Module of COMSOL Multiphysics® software in a 2D geometry we simulate the velocity and temperature field ... En savoir plus

The mesh is a key component in numerical simulations as it represents the spatial discretization of the model geometry. To accurately measure the variation of the unknowns, a relevant mesh should have a high density of degrees of freedom in regions where the norm of the gradient of the ... En savoir plus

Plasma torches are used in processing of materials as well as in the energy industry for producing plasma. In a non-transferred arc plasma torch, an electric arc can be initiated by applying a direct current (DC) between the cathode and anode, both placed inside the torch. Then, the ... En savoir plus