Josselin Ouf

Graduated engineer with a Master in geotechnical engineering. Especially interested in Thermo-Hydro-Mechanical modelling and numerical investigation. Experienced in organizing teamwork as part of a science project and involved in international frameworks. 

  • MSc geotechnical engineering, École Polytechnique de l’Université Grenoble Alpes, France (2016-2019)
  • BSc Civil engineering, Université du Havre, France (2014-2016)

Project Title: Large scale cooling induced stress changes around deep geothermal reservoirs
Host Institutions: RWTH Aachen, ETH Zürich, Geoenergie Suisse
Supervisory Team: Florian Amann, Marian Hertrich, Peter Meier
Start date: 1.5.2021

ESR Objectives:

The operation of geothermal systems (petrothermal and hydrothermal) leads to a transient cooling of the swept rock volume and thus to thermal shrinkage. Due to these THM-coupled processes, the stress state within the reservoir will change.

Thermally induced shrinkage will also affect the stress state in remote locations from the reservoir causing surface subsidence and likely induced seismic events.

The project aims to investigate large-scale thermally induced stress changes using numerical modelling tools such as MOOSE. 

Research Update

The trainee period is over, during this phase I had review the governing equation and their implementation as well as trained on a numerical software (MOOSE). I am starting to model Grimsel experiment, these experiments consist in water injection inside rock fractures and analyze the mechanical response. I currently implement the geology and calibrate all the parameters to have a match between the numerical values and the ones measured on site.

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