2020-03218 - Internship position 2021 in Applied Mathematics and Engineering Sciences (Possibility to pursue with a PhD) Topic : Particles in the environment: dynamics and statistics of re-mobilization
Le descriptif de l’offre ci-dessous est en Anglais

Niveau de diplôme exigé : Bac + 4 ou équivalent

Autre diplôme apprécié : 3rd year master student in applied mathematics, physics or mechanical engineering

Fonction : Stagiaire de la recherche

A propos du centre ou de la direction fonctionnelle

The Inria Sophia Antipolis - Méditerranée center counts 34 research teams as well as 8 support departments. The center's staff (about 500 people including 320 Inria employees) is made up of scientists of different nationalities (250 foreigners of 50 nationalities), engineers, technicians and administrative staff. 1/3 of the staff are civil servants, the others are contractual agents. The majority of the center’s research teams are located in Sophia Antipolis and Nice in the Alpes-Maritimes. Four teams are based in Montpellier and two teams are hosted in Bologna in Italy and Athens. The Center is a founding member of Université Côte d'Azur and partner of the I-site MUSE supported by the University of Montpellier.

Contexte et atouts du poste

This internship is offered within the CaliSto team at Inria, who invested and develop the topic stochastic particle modeling applied to single-phase and multiphase flows througt  complex stochastic differenctial equations . This is done in collaborations with researchers that share interest in environmental applications (including meteorologists, hydro-physicists, physicists specialized in turbulence and two-phase flows modeling).

Mireille Bossy (Inria research director), specialist in stochastic modelling;
• Christophe Henry (Inria starting researcher), specialist in particle-laden flows.

Mission confiée

Key words : Lagrangian stochastic models, Numerical analysis, particles, agglomeration, fragmentation.

Topic description :  Particles are omnipresent in the environment, such as in atmospheric sciences (dispersion of pollutants or radioactive materials) or in marine sciences (plastic contamination in rivers or oceans). These particles can accumulate on surfaces (pollutant deposit on the ground, plastic debris on riverbanks). Due to the action of the flow, such particles can be detached from surfaces and brought back into the flow: this process is often referred to as resuspension in multiphase flows.

Principales activités

The aim of this internship is to develop new models for the re-mobilization of particles.

In particular, the student will extend an existing model to account for inter-particle collision mechanisms that have been recently observed in laboratory experiments. For that
purpose, the student will take part in

  1. the development of the model,
  2. its implementation in a software,
  3. running simulations,
  4. analyzing and validating the results with experimental data.

This internship can lead to publications in international journals.
Motivated candidates will also be encouraged to pursue with a PhD on a related topic


  • Good experience in programming (C, C++, python) and in data analysis
  • Fluent in English

Optional competences

  • Knowledge in fluid dynamics
  • Knowledge in statistical physics
  • Rigorous, autonomous and creative thinking
  • Interest in environmental applications



  • Subsidized meals
  • Partial reimbursement of public transport costs
  • Leave: 7 weeks of annual leave + 10 extra days off due to RTT (statutory reduction in working hours) + possibility of exceptional leave (sick children, moving home, etc.)
  • Possibility of teleworking (after 6 months of employment) and flexible organization of working hours
  • Professional equipment available (videoconferencing, loan of computer equipment, etc.)
  • Social, cultural and sports events and activities
  • Access to vocational training
  • Social security coverage