MSCA COFUND PhD@Tec21 - PhD position in Fluid Dynamics: Developing multiphysics VOF DNS for the fragmentation and solidification of low-Prandtl jets

id="offer-description" class="ecl-u-type-heading-2 ecl-u-mt-none ecl-u-mb-l">Offer Description Context and work environment . Laser Powder Bed Fusion (LPBF) is an advanced additive manufacturing process, critical from medical implant production to aerospace applications, whose accuracy and relevance ultimately rely on the quality of the metallic powder to be melted. The properties of the material manufactured via LPBF directly depend on the powder flowability, governed by the size and the sphericity of the solid particles. Metallic powders are commonly produced by gas-assisted atomisation of liquid metal jets , but the dispersion of the size and sphericity of the resulting droplets is not sufficiently controlled yet. A better understanding of the balance between interfacial dynamics and the cooling and solidification dynamics is necessary to complement the scarce literature on the fragmentation, cooling, and solidification of liquid metal (low-Prandtl) jets. The objective of this PhD project is to bridge the gap in simulating the multiphysics of liquid metal jet fragmentation, from the inductive melting of the feedstock to droplet solidification, including primary and secondary atomization as well as heat transfers between the continuous and dispersed phases. The PhD student will conduct numerical investigations on H igh- P erformance C omputers (HPC) to run Volume-Of-Fluid (VOF) Direct Numerical Simulations (DNS) and generate data necessary for deciphering the microphysics a