Consultez les proceedings de la Conference COMSOL 2024
Materials such as aluminium with high thermal and electrical conductivities are of industrial interest, particularly for the automotive industry in the current context of increasing production of electric vehicles. The reflective properties of this material make it difficult to process ... En savoir plus
Additive manufacturing is attracting more and more interest. Laser Cladding is one of these additive manufacturing processes. As it is a blown powder process, here a melt pool formation & fusion by moving the laser beam, into which powder is blown and molten & surface tension gradient ... En savoir plus
Laser technologies such as welding, cutting and metal deposition are widely used in the industry. High quality requirements regarding process products cause that there is often a need to monitor the process. For this purpose, optical sensors integrated with a laser head are often used. ... En savoir plus
Abstract: The electric field and temperature are the two important factors that influence the fiber diameters and properties in the melt electrospinning process. It is commonly known that the polymer jet behavior is governed by the electric field within spinning area. In the present ... En savoir plus
Laser material processing at micro-meter domain can be used for a plethora of applications such as micro drilling, micro welding, micro cutting, micro-texturing as well as micro polishing. These processes are governed by the time varying, complex melt hydrodynamics courtesy of melting ... En savoir plus
Laser powder bed fusion (LPBF) is one of the most beneficial manufacturing methods for its precision and ability to create parts with complex geometry, although high thermal gradient due to the considerable temperature difference between ambient and peak temperature appeared during laser ... En savoir plus
This study explores the significance of the recoil pressure, Marangoni convection and surface tension effects in selective laser melting of Ti-6Al-4V. A pragmatic two dimensional model with appropriate powder distribution over a substrate of finite thickness has been developed in COMSOL ... En savoir plus
During the last decades, mid-IR (3-12µm) laser sources have attracted attention due to their potential applications in different fields like infrared counter-measures (e.g: missile jamming) and remote chemical sensing. In this context, Onera has been working on the development of non ... En savoir plus
Introduction Numerical modeling of melt-casting is becoming a popular tool for the energetic materials and explosives industry. Compared to traditional metal casting, the cooling cycle for explosive melts is significantly longer because of their high Prandtl numbers [1]. Improving the ... En savoir plus
Marangoni flow affects the heat and mass transfer occurring in the molten metal regions in welding and additive manufacturing processes. It originates from the surface tension gradient (∂γ/∂T) induced at the melt pool surface due to the temperature difference. The flow pattern within ... En savoir plus