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Job Record #16832
TitleLBM and Immersed Boundary for compressible flows
CategoryPostDoc Position
EmployerM2P2- Aix-Marseille University
LocationFrance, Marseille
InternationalYes, international applications are welcome
Closure DateSunday, January 31, 2021
Description:
Title: Development of improved boundary conditions for solid walls in full scale industrial flows simulations with Lattice-Boltzmann and Immersed Boundary methods.

Domain: computational fluid dynamics, Aeronautics, aerodynamics, heat transfer

Project: Advanced Lattice-Boltzmann Understandings for Multiphysics 
Simulations (ALBUMS) funded by Airbus, Safran, Renault and the French National Research Agency (ANR)


Description 

Fluid dynamics simulations play now a crucial role in aeronautics and automotive industry with the ambition to predict accurately quantities of engineering interest for turbulent flows developing inside or over full scale real-world objects. The key of the success is the development of high-fidelity simulations based on accurate and efficient discretization methods and algorithms working in the HPC framework. This is required by the several millions of degrees of freedom induced by the very large range of spatio-temporal scales as well as by the complex geometry to discretize.

The intrinsic properties of the Lattice Boltzman method coupled with the immersed boundary method presents a great potential to predict complex flows in realistic conditions. This is already assessed by successful simulations carried out by the M2P2 team for the automotive and aeronautic industry. However, some key issues have been already clearly identified to push forward the reliability and the accuracy of such simulations with LBM and immersed boundary method. 

In this context, a one-year renewable post-doct position is opened at the M2P2 laboratory in Marseilles (Aix-Marseille Univ, CNRS, Ecole Centrale) to focus on the modelling of solid wall and turbulent boundary layer in the context of high-speed compressible flows. This is a key issue to accurately predict aerodynamic forces and heat transfer in complex full-scale industrial configurations. The team very recently developed a spatio-temporal relaxed mass conservation scheme for incompressible flows in RANS showing reduced mass leakages on irregular meshes and a better symmetry preservation of solid wall conditions than in current solvers.

The post-doc will aim at extending this work to high-speed flows including compressibility effects and possibly shocks. In addition to prevent mass leakage through solid walls, the scheme will have to guarantee an accurate description of various thermal boundaries with in particular an accurate prediction of the heat flux. The work will be performed in the new pressure-based lattice-Boltzmann solver (HRR-p) developed by the team (Farag et a., Physics of Fluids 32, 066106 (2020).

This post-doct fellowship is part of the ALBUMS chair (Advanced Lattice-Boltzmann Understandings for Multiphysics Simulations) recently granted by the ANR and three worldwide industrial companies AIRBUS, SAFRAN and RENAULT to deal with the development of efficient Lattice Boltzmann Methods (LBM) for the simulations of flows in realistic industrial applications in the field of aerodynamics, aeroacoustics and heat transfer.


Expected profile of the candidate 
The candidate will hold a PhD with a solid background in computational fluid dynamics and fluid mechanics. The numerical developments required will involve team-working skills to interact frequently with other post-docs/PhD working on the same numerical code, software engineers, associated industrials and supervisors. 

Research team
The post-doc will be part of the ALBUMS (Advanced Lattice-Boltzmann Understandings for Multiphysics Simulations) project at the M2P2 lab, in Marseille. Funding is assured by the national research agency (ANR), Airbus, Renault and Safran.
Supervision of the research work will be assured by Eric Serre, renowned CFD specialist, and Pierre Sagaut, renowned scientist on turbulence modeling, LBM and ALBUMS Chair holder. 

How to apply 
Send an application to: eric.serre@univ-amu.fr and pierre.sagaut@univ-amu.fr including:
- A detailed CV 

- A cover letter 


Starting date: January to March 2021

Contract duration: 1 year (renewable every year)

Deadline to apply: 20/01/2021


Contact Information:
Please mention the CFD Jobs Database, record #16832 when responding to this ad.
Nameeric serre
Emaileric.serre@univ-amu.fr
Email ApplicationYes
Record Data:
Last Modified14:41:46, Monday, November 09, 2020

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