Project description
Deciphering the impact of fracture geometries on heat transfer efficiency
Fractured reservoirs, depending on their geometries, can be suitable for enhanced geothermal systems. They provide an ideal trajectory for circulating the working fluid while efficiently extracting heat. With the support of the Marie Skłodowska-Curie Actions programme, the HeatSIM project aims to study the coupled thermal-hydraulic processes in fractured rocks and the resulting heat transfer over different scales. It will first measure heat transfer in a variety of experimental fracture geometries and quantify the impact geometric parameters have on the outflow temperature. Then, using inverse modelling techniques, it will apply conceptual simplifications to the experimental geometries, together with numerical simulation to predict outflow temperatures. Several such models will be executed to calibrate their hydraulic and thermal properties from the experimental thermal breakthrough curves.
Objective
Fractured reservoirs are targets for enhanced geothermal systems (EGS), because a network of fractures in an otherwise solid rock is an optimal pathway for circulating the working fluid while efficiently extracting heat. The main ambition of HeatSIM (Heat Transport - Simulation, Inversion, Measurements) is to increase our comprehension of coupled thermal-hydraulic processes and the resulting heat transfer in fractured rocks over different scales, by experimental imaging, numerical simulation and inverse modeling of lab data. The first work package (WP1) will measure heat transfer in laboratory experiments, focusing on the influence of fracture wall topographies and local fracture apertures, dead-end fractures, fracture network topology, and fracture intersections. To this aim, a novel optical thermometry measurement technique, based on the temperature-dependent fluorescence of phosphor colloids, will provide the evolving temperature field within the fluid domain and solid matrix with high spatial and temporal resolutions. A sensitivity analysis will allow quantifying the influence of the various geometric parameters on the outflow temperature. HeatSIM’s WP2 will then propose conceptual simplifications to the experimental geometries, coupled to numerical simulation to predict outflow temperatures. Different such models will be implemented, and their hydraulic and thermal properties will be calibrated from the experimental thermal breakthrough curves. Their outflow temperature prediction capabilities will also be compared. Thanks to the applicant’s strong background in EGS, numerics and inverse modeling, and the host team’s expertise in fractured media, subsurface heat transport and lab experiments, HeatSIM will thus decipher the impact of fractured media’s geometry on heat transfer efficiency, and provide new insights into the prediction of geothermal sites’ efficiency and the optimization of geothermal energy energy extraction.
Fields of science (EuroSciVoc)
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- natural sciences physical sciences astronomy planetary sciences planetary geology
- natural sciences physical sciences condensed matter physics soft matter physics
- natural sciences mathematics pure mathematics topology
- natural sciences mathematics pure mathematics geometry
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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(opens in new window) HORIZON-MSCA-2024-PF-01
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75794 Paris
France
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