2 ANS

Post-Doctoral fellowship in multi-scale modeling of the growth of polycrystalline thin films.

[TheChamp-Sharing]
Post-Doctoral

The objective of this postdoctoral position is to model the growth and microstructural evolution of polycrystalline metallic thin films by developing a numerical simulation code based on kinetic Monte Carlo (kMC) which considers the specificities of energetic physical vapor deposition (PVD) such as magnetron sputtering. It is part of the DREAM project funded by ANR and Région Nouvelle Aquitaine. To this end, the candidate will have to link the deposition parameters (deposited energy, particle flux, substrate temperature and the chemical reactivity at the substrate interface to the microstructure (grain size, texture) and morphology (roughness, faceting) evolution of the growing layer. Specific attention will be also placed on the creation of defects due to energetic bombardment in the polycrystalline metallic layer.

Cédric MASTAIL - Contacter
Institut Pprime
CNRS - Université de Poitiers – ISAE-ENSMA - UPR 3346
11 Boulevard Marie et Pierre Curie
Site du SP2MI-H1
86360 Chasseneuil du Poitou

Applicants must apply on the UP website:
=> https://www.univ-poitiers.fr/documents/0gb01-chercheur-se-post-doctorant-junior-ufr-sciences-fondamentales-et-appliquees/
Début de publication : 30/08/2023
Date de fin de publication : 01/12/2023

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12 months

POST-DOC (M/F) - Control by Machine Learning of bluff body wakes

At the CNRS-Laboratory PPRIME, based at the Futuroscope, this post-doctorate position is part of the French ANR COWAVE program between the laboratories PRISME in Orleans, Pprime in Poitiers, LHEEA in Nantes and the PSA automotive industry. This Post-Doc position concerns the Pprime contribution to the COWAVE project which aims the experimental exploration of closed-loop wake control strategies with mobile flaps in a water tunnel facility. Three-dimensional bluff-body wakes generate pressure drag and side forces and thus contribute significantly to the fuel consumption and pollutant emission of road vehicles. Despite this crucial impact and the numerous attempts to reduce harmful environmental effect of bluff body wakes by flow control it is still unclear what is the most efficient control strategy! In this context, the ANR project COWAVE addresses two fundamental aspects of wake control: - First, what kind of actuators are most efficient? While most closed-loop control strategies use viscous entrainment effects to actuate the shear layers in the wake, the exploitation of pressure forces produced by mobile deflectors could be an interesting alternative to be tested. - Second, for the implementation of closed-loop control, we want to test if control strategies obtained by machine learning techniques allow to obtain better efficiency and robustness than the more classical model-based approaches? The proposed Post-Doc position is part of the French ANR COWAVE program between the laboratories PRISME in Orleans, Pprime in Poitiers, LHEEA in Nantes and the PSA automotive industry. This Post-Doc position concerns the Pprime contribution to the COWAVE project which aims the experimental exploration of closed-loop wake control strategies with mobile flaps in a water tunnel facility. APPLY Follow link / Application Deadline : 12 March 2021 https://bit.ly/3qDG6Ml